WO2011115780A1 - Staple cartidge - Google Patents
Staple cartidge Download PDFInfo
- Publication number
- WO2011115780A1 WO2011115780A1 PCT/US2011/027504 US2011027504W WO2011115780A1 WO 2011115780 A1 WO2011115780 A1 WO 2011115780A1 US 2011027504 W US2011027504 W US 2011027504W WO 2011115780 A1 WO2011115780 A1 WO 2011115780A1
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- WO
- WIPO (PCT)
- Prior art keywords
- staple
- staple cartridge
- proximal
- slot
- retention
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B17/07207—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously the staples being applied sequentially
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/2909—Handles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0042—Surgical instruments, devices or methods, e.g. tourniquets with special provisions for gripping
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/0042—Surgical instruments, devices or methods, e.g. tourniquets with special provisions for gripping
- A61B2017/00455—Orientation indicators, e.g. recess on the handle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00477—Coupling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/0725—Stapler heads with settable gap between anvil and cartridge, e.g. for different staple heights at different shots
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
- A61B17/072—Surgical staplers, e.g. containing multiple staples or clamps for applying a row of staples in a single action, e.g. the staples being applied simultaneously
- A61B2017/07214—Stapler heads
- A61B2017/07285—Stapler heads characterised by its cutter
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0813—Accessories designed for easy sterilising, i.e. re-usable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0814—Preventing re-use
Definitions
- the present invention relates to stapling instruments and, in various embodiments, to a surgical stapling instrument for producing one or more rows of staples.
- the camming surfaces can be configured to activate a plurality of staple drivers carried by the cartridge and associated with the individual staples to push the staples against the anvil and form laterally spaced rows of deformed staples in the tissue gripped between the jaw members.
- the anvil is unmovable relative to the staple cartridge once the jaw members have been assembled together and the formed height of the staples cannot be adjusted.
- the knife blade can trail the pusher bar and cut the tissue along a line between the staple rows. Examples of such stapling instruments are disclosed in U.S. Patent No. 4,429,695, entitled SURGICAL INSTRUMENTS, which issued on February 7, 1984, the entire disclosure of which is hereby incorporated by reference herein.
- a typical stapling instrument can include first and second jaw members which can be secured together by a latch, wherein the latch can be moved between an open position, a partially-closed position, and a closed position.
- the first and second jaw members of a typical stapling instrument can be unintentionally detached from each other, thereby requiring additional time to reassemble the jaw members.
- the detachment of the first and second jaw members may expose a knife blade.
- a stapling instrument can include an actuator knob extending from the pusher bar which can be configured to be grasped by a surgeon and advanced distally to advance the pusher bar and knife blade within the staple cartridge.
- the actuator knob can be advanced relative to a jaw member eventhough the first and second jaw members have not been assembled.
- the actuator knob as it can extend outwardly from the surgical instrument, can unintentionally contact tissue surrounding the surgical site and, as a result, the tissue may impede the advancement of the actuator knob.
- a surgeon may have to force the actuator knob past the tissue and/or reposition the stapling instrument which can increase the time needed to complete the surgery. What is needed is an improvement over the foregoing.
- a surgical stapling instrument can include first and second jaw members which can be pivotably connected to each other and secured in position relative to each other by a latch.
- the first and second jaw members can include first and second locking members which can allow the first and second jaw members to be rotated relative to one another but prevent, or at least inhibit, the first and second jaw members from being separated from one another.
- Such embodiments may be particularly useful in circumstances when the latch is in a partially-closed position and the first and second jaw members are being manipulated to position tissue therebetween.
- a surgical stapling instrument can include a housing which can extend at least partially over and/or around the cutting member. In various embodiments, the housing can at least partially cover the cutting member when the first and second jaw members are detached from one another, yet permit the cutting member to be moved relative to the first and second jaw members during use.
- the surgical stapling instrument can further include a cutting member and/or staple sled which can be advanced and/or retracted relative to the first and second jaw members.
- the staple sled can be advanced by, and/or along with, the cutting member in order to deploy staples from a staple cartridge in one of the first and second jaw members.
- a surgical stapling instrument can include a lock which can prevent, or at least inhibit, the cutting member and/or staple sled from being moved, or at least advanced, relative to the first and second jaw members before the latch has been closed.
- the latch can be configured to engage the lock as the latch is moved from a fully open position to a fully closed position and operably disengage the lock from the cutting member and/or staple sled.
- one of the first and second jaw members can include an anvil having at least one forming surface which can be configured to deform the staples as they are deployed from the staple cartridge.
- the anvil can be movably adjustable relative to the staple cartridge in order to adjust the amount in which the staples are deformed.
- the anvil can be adjusted by a slidable adjusting plate and/or a rotatable cam.
- Figure 1 is a perspective view of a surgical stapling instrument in accordance with at least one embodiment of the present invention
- Figure 2 is an exploded perspective view of the surgical stapling instrument of Fig. 1;
- Figure 3 is an exploded elevational view of the surgical stapling instrument of Fig. 1;
- Figure 4 is a partial cross-sectional view of the surgical stapling instrument of Fig. 1 illustrating first and second portions being assembled together;
- Figure 5 is a partial cross-sectional view of the surgical stapling instrument of Fig. 1 illustrating the proximal end of the first portion of Fig. 4 being locked to the proximal end of the second portion of Fig. 4 and illustrating the second portion being rotated toward the first portion;
- Figure 6 is a partial cross-sectional view of the surgical stapling instrument of Fig. 1 illustrating a latch rotatably mounted to the first portion, wherein the latch is engaged with the second portion and wherein the latch has been rotated into a partially-closed position;
- Figure 7 is a partial cross-sectional view of the surgical stapling instrument of Fig. 1 illustrating the latch of Fig. 6 in a closed position;
- Figure 8 is a perspective view of a staple cartridge assembly of the surgical stapling instrument of Fig. 1;
- Figure 9 is an exploded view of the staple cartridge assembly of Fig. 8.
- Figure 10 is a cross-sectional view of the staple cartridge assembly of Fig. 8 taken along line 10-10 in Fig. 9;
- Figure 11 is an exploded view of a staple sled and cutting member assembly of the staple cartridge assembly of Fig. 8;
- Figure 12 is a perspective view of the staple sled and cutting member assembly of Fig.
- Figure 13 is a perspective view of the surgical stapling instrument of Fig. 1 illustrating a firing actuator moved distally along a first side of the surgical stapling instrument;
- Figure 14 is a perspective view of the surgical stapling instrument of Fig. 1 illustrating the firing actuator of Fig. 13 moved distally along a second side of the surgical stapling instrument;
- Figure 15 is a cross-sectional view of a surgical stapling instrument in accordance with at least one alternative embodiment of the present invention illustrating a latch in a partially-closed position and a locking mechanism engaged with a firing actuator;
- Figure 16 is a cross-sectional view of the surgical stapling instrument of Fig. 15 wherein the latch has been moved into a closed position and has disengaged the locking mechanism from the firing actuator;
- Figure 17 is a perspective view of an anvil assembly of the surgical stapling instrument of
- Figure 18 is an exploded perspective view of the anvil assembly of Fig. 17;
- Figure 19 is another exploded perspective view of the anvil assembly of Fig. 17;
- Figure 20 is an exploded cross-sectional elevational view of the anvil assembly of Fig.
- Figure 21 is a cross-sectional assembly view of the anvil assembly of Fig. 17 illustrating an anvil adjustment member in a first position
- Figure 22 is a cross-sectional assembly view of the anvil assembly of Fig. 17 illustrating the anvil adjustment member of Fig. 21 in a second position;
- Figure 23 is a cross-sectional assembly view of the anvil assembly of Fig. 17 illustrating the anvil adjustment member of Fig. 21 in a third position;
- Figure 24 is a perspective view of a surgical stapling instrument in accordance with at least one alternative embodiment of the present invention.
- Figure 25 is a cross-sectional view of the surgical stapling instrument of Fig. 24 taken along line 25-25 in Fig. 24;
- Figure 26 is a partial exploded view of the proximal end of the surgical stapling instrument of Fig. 24 including a detent mechanism for releasably holding a rotatable anvil adjustment member in position;
- Figure 27 is a perspective view of the surgical stapling instrument of Fig. 24 with some components removed and others shown in cross-section;
- Figure 28 is an exploded view of portions of the surgical stapling instrument of Fig. 24 illustrating a rotatable anvil adjustment member in a first orientation;
- Figure 29 is a perspective view of the rotatable anvil adjustment member of Fig. 28;
- Figure 30 is an end view of the surgical stapling instrument of Fig. 24 with some components removed and others shown in dashed lines illustrating the rotatable anvil adjustment member in the first orientation of Fig. 28;
- Figure 31 is a cross-sectional end view of the surgical stapling instrument of Fig. 24 taken along line 31-31 in Fig. 24;
- Figure 32 is an end view of the surgical stapling instrument of Fig. 24 illustrating the rotatable anvil adjustment member of Fig. 28 rotated in a first direction into a second orientation;
- Figure 33 is a cross-sectional end view of the surgical stapling instrument of Fig. 24 illustrating the anvil adjustment member in the second orientation of Fig. 32;
- Figure 34 is an end view of the surgical stapling instrument of Fig. 24 illustrating the rotatable anvil adjustment member of Fig. 28 rotated in a second direction into a third
- Figure 35 is a cross-sectional end view of the surgical stapling instrument of Fig. 24 illustrating the anvil adjustment member in the third orientation of Fig. 34;
- Figure 36 is a perspective view of an actuator for rotating the anvil adjustment member of Fig. 28;
- Figure 37 is a partial cross-sectional view of a surgical stapling instrument including a spring configured to bias the distal end of a first handle portion away from the distal end of a second handle portion when the stapling instrument is in a partially-closed configuration;
- Figure 38 is an exploded perspective view of the surgical stapling instrument of Fig. 1;
- Figure 39 is an exploded elevational view of the surgical stapling instrument of Fig. 1;
- Figure 40 is a partial cross-sectional view of the surgical stapling instrument of Fig. 1 illustrating a latch rotatably mounted to the first portion, wherein the latch is engaged with the second portion and wherein the latch has been rotated into a partially-closed position;
- Figure 41 is a perspective view of a staple cartridge assembly of the surgical stapling instrument of Fig. 1;
- Figure 42 is an exploded view of the staple cartridge assembly of Fig. 8;
- Figure 43 is a cross-sectional view of the staple cartridge assembly of Fig. 8.
- Figure 44 is an exploded view of a staple sled and cutting member assembly of the staple cartridge assembly of Fig. 8;
- Figure 45 is a perspective view of the staple sled and cutting member assembly of Fig.
- Figure 46 is a detail view of a distal end of a drive bar configured to be operably connected to the staple sled and cutting assembly of Fig. 44, wherein the drive bar distal end is illustrated in a proximal position in solid lines a second, or distal, position in phantom lines;
- Figure 47 is a partial bottom view of the staple cartridge assembly of Fig. 8.
- Figure 48 is a cross-sectional view of a staple cartridge assembly in accordance with an alternative embodiment.
- a surgical stapling instrument can comprise a first handle portion 102 and a second handle portion 104.
- first handle portion 102 and second handle portion 104 can be configured to be grasped by a surgeon, for example, and can comprise hand grip portion 106.
- first handle portion 102 referring to Figs. 2 and 3, can include a first cover 108 attached to a first frame 110 and, similarly, second handle portion 104 can include a second cover 112 attached to a second frame 114.
- Covers 108 and 112 can be ergonomically contoured, or otherwise suitably contoured, to assist a surgeon in manipulating stapling instrument 100 within a surgical site.
- handle covers 108 and 112 can include enlarged protrusions 109 and 113, respectively, which can facilitate the insertion of stapling instrument 100 into a surgical site.
- handle covers 108 and 112 can be made of plastic, lightweight materials, and/or any other suitable material, for example, while handle frames 110 and 114 can be made of stainless steel, titanium, and/or any other suitable material, for example.
- the distal ends of handle portions 102 and 104 can comprise an end-effector 120 which can be configured to treat tissue within a surgical site, for example.
- end-effector 120 can include a staple cartridge channel 122 configured to receive and/or retain a staple cartridge as described in greater detail further below.
- staple cartridge channel 122 can comprise a one-piece elongated channel-shaped frame extending from first handle portion frame 110.
- staple cartridge channel 122 can include a pair of opposed, elongated side walls 124 connected by a bottom wall 126.
- a pair of spaced, upstanding side flanges 128 can extend upwardly from opposed side walls 124.
- the width of staple cartridge channel 122 between side flanges 128 can be greater than the width of the upper jaw member, or anvil, 130 extending from second handle portion 104.
- the distance between flanges 128 can be configured to permit at least a portion of anvil 130 to be received between side flanges 128 when the stapling instrument is assembled for operation. As shown in Fig.
- each side flange 128 of can include a notch, or recess, 127, for example, which can be configured to receive one or more latch projections 131, for example, extending from anvil 130, and/or any other suitable portion of second handle portion 104, as described in greater detail further below.
- staple cartridge channel 122 can be configured to support and/or retain a staple cartridge, such as staple cartridge 150, for example, within end-effector 120, wherein the staple cartridge can include one or more staples (not illustrated) removably stored therein.
- staple cartridge 150 can include one or more staple cavities 151 which can be configured to store staples in any suitable arrangement, such as in at least two laterally-spaced longitudinal rows, for example. In at least one embodiment, referring to Figs.
- staple cartridge 150 can include staple cartridge body 152 and pan, or retainer, 154, wherein staple cartridge body 152 and/or pan 154 can be configured to define a channel, or path, for slidably receiving a staple sled and/or cutting member therein.
- pan 154 can include flexible arms 155, for example, which can be configured to engage staple cartridge body 152 in a snap-fit and/or press-fit arrangement.
- staple cartridge 150 can further include staple sled assembly 160 which can include staple sled portion 162 and, in addition, cutting member 164.
- cutting member 164 can include cutting edge 165 and lock arm 166, for example, wherein lock arm 166 can be configured to be press-fit and/or snap- fit into aperture 163 in staple sled 162 when cutting member 164 is assembled to staple sled portion 162.
- staple sled portion 162 can be integrally molded to cutting member 164.
- staple cartridge body 152 can include a slot, such as slot 156, for example, which can be configured to receive at least a portion of cutting member 164 therein, and/or any other portion of staple sled assembly 160 and pusher bar assembly 200 (discussed below), wherein slot 156 can be configured to permit cutting member 164 to be moved between first and second positions within staple cartridge 150.
- slot 156 can be configured to permit cutting member 164 to be moved between a proximal position (Fig. 10) and a distal position in order to incise tissue positioned intermediate staple cartridge 150 and anvil 130, for example. Referring again to Figs.
- staple sled portion 162 can include cam, ramp, or actuator, surfaces 167 which can be configured to engage staple drivers positioned within staple cartridge 150.
- staple cartridge 150 can include staple drivers 168 which can be lifted, or slid, upwardly within staple cavities 151 by sled portion 162 such that the upward movement of staple drivers 168 can eject, or deploy, staples at least partially positioned within staple cavities 151.
- staple drives 168 can be, in fact, lifted vertically upwardly, the term upward, and the like, can mean that staple drivers 168, for example, are moved toward the top surface, or deck, 158 of the staple cartridge and/or toward anvil 130, for example.
- staple drivers 168 for example, are moved toward the top surface, or deck, 158 of the staple cartridge and/or toward anvil 130, for example.
- each staple driver 168 can include one or more sloped surfaces 169 oriented at the same angle as a cam surface 167, and/or any other suitable angle, which can provide a relatively flat, or at least substantially flat, sliding contact surface between staple sled 162 and staple drivers 168.
- a staple driver can be configured to deploy only one staple, while, in certain embodiments, a staple driver can be configured to simultaneously deploy two or more staples located in adjacent rows, for example.
- Other devices are disclosed in U.S. Patent Application Serial No. 12/030,424, entitled SURGICAL STAPLING INSTRUMENT WITH IMPROVED FIRING TRIGGER ARRANGEMENT, which was filed on February 13, 2008, the entire disclosure of which is incorporated by reference herein.
- a surgical stapling instrument can include a cutting member/staple sled assembly configured to incise tissue and deploy staples from a staple cartridge.
- a surgical stapling instrument may not require, or include, a cutting member.
- a staple cartridge can include a staple sled positioned therein and/or a surgical instrument can be configured to move a staple sled into a staple cartridge in order to staple tissue, for example, without otherwise dissecting it.
- a staple cartridge can include a staple sled positioned therein where a surgical instrument can include a cutting member movable into, or relative to, the staple cartridge.
- the cutting member can be advanced into contact with the staple sled such that the cutting member and staple sled can be advanced together. Thereafter, the cutting member can be sufficiently retracted to allow the staple cartridge to be detached from the surgical instrument and replaced with a new staple cartridge having a new staple sled.
- a staple cartridge can include a cutting member positioned therein where a surgical instrument can include a staple sled movable into, or relative to, the staple cartridge.
- the staple sled can be advanced into contact with the cutting member such that the cutting member and staple sled can be advanced together.
- the staple sled can be sufficiently retracted to allow the staple cartridge to be detached from the surgical instrument and replaced with a new staple cartridge having a new cutting member.
- the staple cartridge can include a protective housing or cover configured to prevent, or at least reduce the possibility of, a surgeon or other clinician from touching the cutting member positioned within the staple cartridge while handling the staple cartridge, for example.
- staple cartridge channel 122 and/or staple cartridge 150 can include one or more co-operating projections and/or recesses, for example, which can be configured to removably retain staple cartridge 150 within staple cartridge channel 122.
- first handle portion 102 can be assembled to the second handle portion 104.
- the staple cartridge may be inserted into the staple cartridge channel after the first and second handle portions have been assembled together. In either event, referring to Figs.
- first handle portion 102 and second handle portion 104 can include proximal ends 103 and 105, respectively, which can be assembled together such that the first and second handle portions can be rotatably or pivotably coupled to one another.
- first handle portion 102 can include one or more pins, or projections, 111 extending therefrom which can be configured to be slidably received within one or more grooves, channels, or slots 115 in second handle portion 104.
- slots 115 can be defined in second handle frame 114 and projections 111 can extend from a proximal end post 107 extending from first handle frame 110, for example.
- first handle portion 102 and second handle portion 104 In order to assemble first handle portion 102 and second handle portion 104, referring to Fig. 4, the open ends of slots 115 can be aligned with projections 111 such that second handle portion 104, for example, can be translated relative to first handle portion 102 and projections 111 can be slid within slots 115.
- the open ends of slots 115 can be located proximally with respect to their closed ends.
- proximal end 105 of second handle portion 104 can be positioned distally with respect to proximal end 103 of first handle portion 102 such that second handle portion 104 can be moved proximally in order to position projections 111 within slots 115.
- first handle portion 102 can be positioned proximally with respect to second handle portion 104 and slid distally in order to position projections 111 within slots 115.
- second handle portion 104 can be rotated toward first handle portion 102 such that anvil 130 can be moved into position relative to staple cartridge 150 and/or staple cartridge channel 122.
- first handle portion 102 can be rotated toward second handle portion 104 and/or the first and second handle portions can be rotated toward each other.
- projections 111 and slots 115 when engaged with one another, can comprise a pivot about which one or both of the first and second handle portions can be moved relative to each other.
- second handle portion 104 can be moved relative to first handle portion 102 such that anvil 130 is moved into close opposition to staple cartridge 150.
- first handle portion 102 can further include latching mechanism 180 rotatably mounted thereto which can be utilized to engage latch projections 131 extending from second handle portion 104 and secure the first and second handle portions together.
- latching mechanism 180 can be mounted to first frame 110 by one or more pivot pins 182 which can be configured to define an axis about which latch 180 can be rotated.
- latching mechanism 180 can include latch frame 184 and, in addition, latch cover 186 assembled to latch frame 184.
- the latch cover and the latch frame can comprise an integral unit or, in certain embodiments, the latching mechanism may not even include a cover.
- latch frame 184 can be channel-shaped and can include a pair of opposed, elongated side walls 185 which are spaced apart by a distance sufficient to span first frame portion 110.
- latch cover 186 can be made of plastic, lightweight materials, and/or any other suitable materials, for example, while latch frame 184 can be made of stainless steel and/or any other suitable material, for example.
- latch cover 186 when latching mechanism 180 is closed, as illustrated in Fig. 7, latch cover 186 can be aligned with first handle cover 108.
- Latch cover 186 can include contoured portion 187 which can be configured to assist a surgeon in manipulating surgical instrument 100 wherein, in at least one embodiment, contoured portion 187 can be aligned with, or at least substantially aligned with, protrusion 109 extending from first handle cover 108.
- Latching mechanism 180 can further include one or more latch arms 188 extending therefrom which can be configured to engage one or more latch projections 131 extending from second handle portion 104 and pull and/or secure projections 131 within recesses 127 as illustrated in Fig. 7.
- At least one of latch arms 188 can be integrally-formed with latch frame 184.
- at least one of latch arms 188 can include a distal hook 189 which can be configured to wrap around at least a portion of projections 131 so as to encompass or surround, or at least partially encompass or surround, projections 131.
- latch arms 188 can act as an over-center latch to maintain latching mechanism 180 in its latched, or closed, position.
- one of the first handle portion 102 and the second handle portion 104 can be positioned on a first side of tissue within a surgical site and the other handle portion can be rotated into position on the opposite side of the tissue.
- staple cartridge 150 can be positioned on one side of the tissue and anvil 130 can be positioned on the other side of the tissue.
- latching mechanism 180 can be actuated such that it can be moved between an open position and a closed position in order to latch second handle portion 104 to first handle portion 102 and apply a clamping force to the tissue positioned between staple cartridge 150 and anvil 130.
- latching mechanism 180 can be moved between an open position (Fig.
- latching mechanism 180 can be moved between an open position in which latch arms 188 are not engaged with projections 131 and a partially- closed position in which latch arms 188 are engaged with projections 131 such that, although anvil 130 has been at least partially brought into opposition to staple cartridge 150, a sufficient gap can remain between anvil 130 and staple cartridge 150 which can allow end-effector 120 to be repositioned relative to the tissue, for example.
- latching mechanism 180 can be moved between its partially-closed position and a closed position, as illustrated in Fig. 7.
- a surgical stapling instrument can further include a biasing member which can be configured to bias the first handle portion of a stapling instrument away from a second handle portion.
- a biasing member which can be configured to bias the first handle portion of a stapling instrument away from a second handle portion.
- a spring, and/or any suitably resilient material can be positioned intermediate the first and second handle portions such that the anvil and staple cartridge of the stapling instrument can be biased away from each other.
- the spring can be configured to at least partially separate the first and second handle portions such that a gap exists between the anvil and the staple cartridge, wherein the gap can be sufficient to allow tissue to be positioned therebetween.
- a surgeon can position such a surgical stapling instrument without having to separate and hold the first and second handle portions apart from each other.
- Such an instrument may be especially useful when the stapling instrument is in a partially-closed configuration and the surgeon is manipulating the instrument within a surgical site. After the surgeon is satisfied with the positioning of the stapling instrument, the surgeon can compress and/or disengage the spring and place the stapling instrument in a closed configuration.
- projections 111 and slots 115 at the proximal ends of the first and second handle portions can be configured to retain at least the proximal ends of the first and second handle portions together when the distal ends of the first and second handle portions are being moved relative to each other, for example. Stated another way, projections 111 and slots 115 can cooperate to prevent, or at least inhibit, first handle portion 102 from becoming completely detached from second handle portion 104.
- a first handle portion can include a first lock portion and a second handle portion can include a second lock portion, wherein the first and second lock portions can be configured to be engaged with one another and prevent the first handle portion from becoming completely detached from the second handle portion.
- projections 111 can comprise the first lock portion and slots 115 can comprise the second lock portion.
- Previous stapling instruments lacked such lock portions and instead relied on a sole latching mechanism to keep the first and second handle portions together. In circumstances where the latching mechanisms of these previous stapling instruments were not fully engaged with both of the first and second handle portions, the first and second handle portions could become completely detached from one another, thereby requiring a surgeon, for example, to reposition and reassemble the handle portions. In certain circumstances, a complete detachment of the first and second handle portions of these previous staples could expose at least a portion of a cutting member.
- latching mechanism 180 can be configured to be moved between an open position, a partially-closed position, and a closed position.
- latching mechanism 180 When latching mechanism 180 is in its open position, as also outlined above, projections 111 can be inserted into and/or removed from slots 1 15.
- latch arms 188 When latching mechanism 180 is in its partially-closed position, referring to Fig. 6, latch arms 188 can be configured to engage latch projections 131 such that projections 111 cannot be removed from slots 115.
- latch arms 188 and latch projections 131 can be configured to prevent, or at least inhibit, second handle portion 104 from being moved distally with respect to first handle portion 102 and, as a result, prevent, or at least inhibit, projections 111 from being disengaged from slots 115.
- latch arms 188 and latch projections 131 can be configured to prevent first handle portion 102 from being moved proximally with respect to second handle portion 104.
- latch arms 188 and latch projections 131 can also be configured to prevent, or at least inhibit, projections 111 from being removed from slots 115 when latching mechanism 180 is in its closed position (Fig. 7).
- latch projections 131 can extend from second handle portion 104 at a location which is intermediate its proximal and distal ends.
- projections 111 and slots 115 can be configured to hold the first and second handle portions together at their proximal ends while latching mechanism 180 can be utilized to hold the first and second handle portions together at an intermediate location.
- the first and second handle portions cannot be disengaged from one another unless latching mechanism 180 is moved into its fully open position.
- projections 111 and slots 115 cannot be disengaged from one another when latching mechanism 180 is in a closed and/or partially-closed position.
- surgical stapling instrument 100 can further include pusher bar assembly 200 which can be configured to advance and/or retract staple sled assembly 160 within staple cartridge 150, for example.
- pusher bar assembly 200 can include pusher bar 202 and firing actuator 204, wherein firing actuator 204 can be configured to move pusher bar 202 and staple sled assembly 160 distally to deploy staples from staple cartridge 150 and deform the staples against anvil 130 as described above.
- firing actuator 204 can be configured to move pusher bar 202 and staple sled assembly 160 distally to deploy staples from staple cartridge 150 and deform the staples against anvil 130 as described above.
- staple sled 162 can include a groove, channel, or slot 161 which can be configured to receive, and can be operably connected to, a distal end 201 (Fig. 3) of pusher bar 202.
- staple sled assembly 160 can be operably engaged with pusher bar 202 when staple cartridge 150 is inserted into staple cartridge channel 122.
- distal end 201 and slot 161 can include cooperating features which can allow distal end 201 and slot 161 to be assembled in a transverse direction but prevent, or at least inhibit, distal end 201 and slot 161 from being disassembled from one another in a proximal direction and/or distal direction.
- pusher bar 202 can be advanced distally before contacting and engaging staple sled assembly 160.
- the staple sled assembly 160 can remain stationary until contacted by pusher bar 202.
- actuator 204 can be operably connected to pusher bar 202 such that a pushing and/or pulling force can be applied to actuator 204 and transmitted to pusher bar 202.
- actuator 204 can be pivotably connected to a proximal end 203 of pusher bar 202 such that actuator 204 can be selectively rotated between at least first and second positions.
- actuator 204 can be movable between a first position on a first side 116 of surgical stapling instrument 100 (Fig. 13), a second position on a second side 117 (Fig. 14), and an intermediate position (Fig. 1) located at the proximal ends 103 and 105 of the first and second handle portions 102 and 104.
- actuator 204 Once actuator 204 has been rotated into position on one of the first and second sides 116, 117, actuator 204 can be advanced distally. In various circumstances, as a result, a surgeon may select whether to move actuator 204 distally along first side 116 or second side 117.
- actuator 204 can include arm 206 extending therefrom where arm 206 can be pivotably mounted to proximal end 203 of pusher bar 202.
- surgical instrument 100 can include a first slot (not illustrated) extending along first side 116 and a second slot 118 extending along second side 117, wherein the first and second slots can be configured to slidably receive at least a portion of actuator 204.
- the sidewalls of the first and second slots can confine, or at least assist in confining, the movement of actuator 204 such that it can be moved along a predetermined path.
- second slot 118 for example, can be defined between first handle portion 102 and second handle portion 104 such that, when actuator 204 is moved distally along second side 117, arm 206 of actuator 204 can be slid intermediate the first and second handle portions. Similar to the above, the first slot can also be defined intermediate the first and second handle portions.
- surgical instrument 100 can further include intermediate slot 119 which can also be configured to allow arm 206, and/or any other suitable portion of actuator 204, to slide therein. In at least one such embodiment, intermediate slot 119 can connect the first and second slots such that, when actuator 204 is positioned in its
- actuator 204 can be moved into either one of its first and second positions.
- the first slot, second slot 117, and intermediate slot 119 can be parallel, or at least substantially parallel, to one another and/or lie in the same plane, although other embodiments are envisioned in which one or more of the slots is not parallel to the others and/or lies in a different plane.
- the first and second sides of the illustrated embodiment are located on opposite sides of surgical instrument 100, other embodiments are envisioned where the first and second slots, for example, are located on adjacent sides and/or sides which are not directly opposite to each other.
- other embodiments are envisioned in which the sides of a stapling instrument are not readily discernable, such as instruments having round and/or arcuate portions.
- surgical stapling instrument 100 can further include a locking mechanism which can prevent, or at least inhibit, actuator 204 and, correspondingly, staple sled assembly 160, from being advanced prematurely.
- the locking mechanism can be configured to prevent, or at least inhibit, actuator 204 from being advanced distally prior to latching mechanism 180 being moved into a closed, or an at least partially-closed, position.
- surgical stapling instrument 100 can further including locking mechanism 220 which can be engaged with actuator 204 and can remain engaged with actuator 204 while latching mechanism 180 is in a fully open position (Fig. 5) and/or an at least substantially-open position.
- locking mechanism 220 can include lock 222 which can be biased into
- actuator 204 can include one or more grooves, channels, or slots (not illustrated) which can be configured to receive at least a portion of lock 222.
- locking mechanism 220 can hold actuator 204 in position until latching mechanism 180 is moved into its fully closed position (Fig. 7) and/or an at least substantially closed position.
- latching mechanism 180 can be configured to engage locking mechanism 220 and disengage lock 222 from actuator 204.
- Figs. 7 referring to Figs.
- latching mechanism 180 can further include cam 183 which can be configured to engage cam surface 223 on lock 222 when latching mechanism 180 is moved into its closed position and, as a result, slide, and/or otherwise move, lock 222 away from actuator 204.
- cam 183 can comprise a wall, rib, and/or ridge extending from latch cover 186 and/or latch frame 184.
- actuator 204 can be moved from its intermediate position, illustrated in Fig. 1, into one of its first and second positions, as illustrated in Figs. 13 and 14.
- locking mechanism 220 can be configured to prevent, or at least inhibit, drive bar 202 from being advanced distally prior to latching mechanism 180 being moved into a predetermined position, such as, for example, a closed position and/or partially- closed position.
- locking mechanism 220 may also prevent, or at least inhibit, staple sled assembly 160 from being advanced prior to the first handle portion 102 and the second handle portion 104 being assembled together.
- locking mechanism 220 can prevent tissue positioned intermediate anvil 130 and staple cartridge 150 from being cut and/or stapled prior to anvil 130 and staple cartridge 150 being properly positioned relative to the tissue.
- locking mechanism 220 can prevent staples from being deployed into the tissue prior to an appropriate clamping force being applied to the tissue.
- locking mechanism 220' can include a lock 222' comprising a cam surface 223' and, in addition, a stop 226' which can limit the relative movement of lock 222'.
- cam 183 for example, can be configured to contact cam surface 223' and, owing to the contoured, beveled, and/or angled surface of cam surface 223', cam 183 can be configured to drive lock 222' distally as illustrated in Fig. 16.
- Lock 222' can be driven distally such that pin 228', which extends from lock 222', can be moved between a first position (Fig. 15) in which it is positioned within aperture 229' in actuator 204' and a second position (Fig. 16) in which pin 228' has been sufficiently removed from aperture 229'.
- stop 226' can be configured such that, as lock 222' is driven distally, stop 226' can come into contact with cam 183 once lock 222' has been sufficiently displaced.
- stop 226' can be configured to control the second, or displaced, position of lock 222'. Similar to the above, as actuator 180 is moved out of its closed position and cam 183 is disengaged from locking mechanism 220', lock spring 224' can move lock 222' into engagement with actuator 204' once again.
- a firing actuator can be utilized to move a pusher bar, staple sled, and/or cutting member between first and second positions.
- pusher bar assembly 200 can be utilized to move a staple sled assembly, such as staple sled assembly 160, for example, between a proximal position (Fig. 10) and a distal position.
- a staple cartridge such as staple cartridge 150, for example, can include a staple sled assembly 160 contained therein, wherein staple sled assembly 160 can be positioned in a proximal position, as illustrated in Fig. 10, when the staple cartridge is assembled to or inserted into staple cartridge channel 122.
- staple cartridge 150 can include further housing 170 which can be configured to cover at least a portion of cutting member 164 when staple sled assembly 160 is in its proximal position, for example.
- housing 170 can be configured to protect a surgeon, for example, when handling the staple cartridge, when inserting the staple cartridge into the surgical stapler, and/or assembling two or more portions of the surgical stapler together, for example.
- at least an upper portion of cutting edge 165 can extend above deck, or top surface, 158 of staple cartridge 150 and, absent a protective housing, such as housing 170, for example, the upper portion of cutting edge 165 may be exposed.
- cutting member 165 can be at least partially positioned within slot, or channel, 156 and, as illustrated in Fig. 10, at least the upper, or top, portion of cutting member 164 can extend above deck 158.
- housing 170 can include a first wall, or portion, 172 extending from a first portion 157 of staple cartridge body 152, a second wall, or portion, 174 extending from a second portion 159 of staple cartridge body 152, and a top wall, or portion, 176 extending between first wall 172 and second wall 174.
- a housing may comprise only one support wall, or support portion, extending from a staple cartridge body and, in addition, a top wall, or top portion, extending therefrom.
- a housing may comprise one or more side walls, or portions, and no top wall.
- the side walls of the housing can be configured such that they extend above the top of the cutting member, or at least extend above a cutting edge of the cutting member, for example.
- at least a portion of cutting member 164 can be positioned underneath top wall 176 and/or between side walls 172 and 174 when staple sled assembly 160 is in its proximal position.
- cutting member 164 can be entirely positioned underneath top wall 176, and/or entirely positioned within housing 170. In at least one embodiment, cutting member 164 can be positioned underneath top wall 176 such that cutting surface 165 does not extend beyond the distal edge 175 and/or the proximal edge 177 of top wall 176. In at least one embodiment, housing 170 can include a rear wall 178 which can be configured to limit the proximal movement of cutting member 164 and/or any other portion of staple sled assembly 160. In various embodiments, at least a portion of housing 170, for example, can be integrally-formed with staple cartridge body 152.
- first wall 172, second wall 174, top wall 176, and/or rear wall 178 can be formed when staple cartridge body 152 is injection molded, for example.
- at least a portion of housing 170 can be assembled to staple cartridge body 152 via a snap-fit arrangement, press-fit arrangement, and/or any other suitable manner.
- cutting member 164 can be defined by a planar, or an at least substantially planar, body having a knife edge extending along at least one side of the cutting member body.
- first wall 172 and/or second wall 174 can be configured and arranged such that they can include planar, or at least substantially planar, interior surfaces 173 which are parallel, or at least substantially parallel, to the side surfaces of cutting member 164.
- cutting member 164 can be closely received between the interior surfaces 173 of walls 172 and 174.
- the distance between walls 172 and 174 may be the same as, or at least
- a housing can be configured such that at least a portion of the housing extends over at least a portion of slot 156, for example.
- housing 170 can completely enclose or surround a cutting member 164 and/or cutting surface 165.
- a housing can include a break-away and/or incisable portion which can be at least partially detached, separated, and/or otherwise deformed in order to permit a cutting member to exit the housing.
- the tissue cutting surface can be configured to contact the housing to break and/or incise a housing wall, for example.
- the housing wall can include a thin portion, a reduced-thickness portion, score mark, and/or any other configuration to facilitate the deformation and/or incision of the housing wall.
- a cutting member can include one or more additional cutting surfaces and/or anvils, for example, which can be configured to deform and/or incise the housing.
- the housing can include a movable and/or flexible portion, such as a hinged member and/or flexible flap, for example, which can be configured to sufficiently move and/or flex to allow the cutting member to pass thereby.
- the cutting member can have any suitable configuration for incising tissue and the protective housing can have any suitable configuration for at least partially enclosing or surrounding the cutting member.
- a cutting member can comprise a sharpened edge as described above, other suitable cutting members are envisioned, such as those supplied with an electrical current sufficient to dissect tissue, for example.
- housing 170 can be configured to at least partially cover, enclose, and/or surround a cutting member when it is in its proximal position.
- the cutting member can be advanced distally to incise tissue, for example, and then retracted proximally in order to position the cutting member within housing 170 once again.
- the cutting member can be at least partially covered by housing 170 when the staple cartridge is assembled to and removed from a surgical stapling instrument.
- a new, or unspent, staple cartridge can be inserted into the staple cartridge channel to replace the at least partially spent staple cartridge.
- the new staple cartridge can include a new cutting member and/or staple sled assembly positioned therein, although embodiments are envisioned in which the previously-used cutting member and/or staple sled assembly can be sufficiently withdrawn from the spent staple cartridge and advanced into the new staple cartridge in order to be reused once again.
- a sharp cutting edge for example, can be utilized with each staple cartridge.
- a staple cartridge can include two or more housings configured to at least partially cover a cutting member when it is in two or more positions.
- a staple cartridge can include a proximal housing configured to at least partially cover the cutting member when it is in a proximal position, for example, and, in addition, a distal housing configured to at least partially cover the cutting member when it is in a distal position, for example.
- the cutting member can be positioned within the proximal housing when the staple cartridge is assembled to a surgical stapling instrument and, in certain embodiments, the cutting member can be advanced into the distal housing after it has transected tissue positioned within the end-effector, for example.
- the cutting member can be at least partially positioned within the distal housing when the staple cartridge is removed from the surgical stapler.
- Such embodiments may be particularly useful when a vessel, for example, is positioned intermediate the proximal housing and the distal housing of the staple cartridge.
- a cutting member can be moved proximally from a distal position to a proximal position, and/or any other suitable position.
- staple cartridge 150 can be inserted into staple cartridge channel 122.
- a proximal end 213 of staple cartridge 150 can be positioned within a proximal end 123 of staple cartridge channel 122 while a distal end 211 of staple cartridge 150 can be positioned within a distal end 121 of staple cartridge channel 122.
- the distal end 121 of staple cartridge channel 122 can comprise one or more projections and/or one or more recesses which can be
- each sidewall 124 of staple cartridge channel 122 can comprise a projection, or tab, 279 and a recess, or slot, 278, wherein each side of staple cartridge 150 can comprise, referring to Fig. 41, a projection 274 configured to be positioned within a recess 278 and, in addition, a recess 270 configured to receive a projection 279.
- each recess 270 of staple cartridge 150 can comprise opposing sidewalls 272 and 273 and a distal surface 271, wherein the distal surface 271 can be positioned against the projection 279 positioned therein when the staple cartridge 150 is positioned in staple cartridge channel 122.
- the distal surfaces 271 of recesses 270 can serve as a datum surface from which certain features of the staple cartridge 150 can be predetermined.
- the distal end 211 of staple cartridge 150 can be aligned with and/or inserted into the distal end 121 of staple cartridge channel 122 before the proximal end 213 of staple cartridge 150 is inserted into the proximal end 123 of staple cartridge channel 122.
- the distal end 211 of staple cartridge channel 150 can be aligned with the staple cartridge channel 122 such that projections 279 are positioned within recesses 270 wherein, thereafter, the staple cartridge 150 can be rocked, or rotated, toward staple cartridge channel 122 such that proximal end 213 of staple cartridge 150 is inserted into the proximal end 123 of staple cartridge channel 122.
- each alignment slot 280 can comprise lateral sidewalls 283 and 284 and a basewall 281 extending between the sidewalls 283 and 284.
- a predetermined distance 289 can be measured between the distal datum surfaces 271 of recesses 270 to the distal basewalls 281 of alignment slots 280.
- the predetermined distance 288 between the distal end of the projections 279 and the distal end of the side flanges 128 can be such that it is shorter than the distance 289 between the distal surfaces 271 of recesses 270 and the basewalls 281 of alignment slots 280. Owing to the distance 288 being shorter than the distance 289, the staple cartridge 150 can be rotated into position as described above such that side flanges 128 can enter into alignment slots 280.
- alignment slots 280 can be sized and configured such that the side flanges 128 are closely received between the sidewalls 283 and 284 such that there is little, if any, relative movement between the side flanges 128 and the sidewalls of the alignment slots 280, for example.
- the proximal end 213 of the staple cartridge 150 can be inserted into the distal end 121 of staple cartridge channel 122 and slid proximally between sidewalls 124 such that the proximal end 213 of staple cartridge channel 150 enters into the proximal end 123 of staple cartridge channel 122.
- the side flanges 128 can enter into alignment slots 280 and, in addition, the projections 279 can enter into the recesses 270.
- the staple cartridge 150 can be both slid and rotated into the staple cartridge channel 122.
- the staple cartridge 150 and the staple cartridge channel 122 can be configured such that the staple cartridge 150 can be removably secured within the staple cartridge channel 122.
- the staple cartridge 150 can comprise one or more retention features which can be configured to releasably engage one or more retention features in the staple cartridge channel 122. More particularly, in at least one such embodiment, the staple cartridge 150 can comprise one or more retention slots 190 which can be configured to engage one or more retention keys 195 in the staple cartridge channel 122.
- the staple cartridge 150 can comprise one or more retention slots 190 which can be configured to engage one or more retention keys 195 in the staple cartridge channel 122.
- each retention slot 190 can comprise a first, or entrance, portion 191 which can be configured to receive a retention key 195 therein and, in addition, a second portion 192 which can be configured to receive the retention key 195 after it has passed through the entrance portion 191.
- the entrance portion 191 in certain embodiments
- a retention slot 190 can be configured to engage a retention key 195 in at least one of a pres-fit and/or a snap-fit manner.
- proximal side 193 and/or the distal side 194 can be configured to flex or splay outwardly as the retention key 195 is inserted into retention slot 190.
- the proximal sides 193 can be displaced proximally.
- the proximal side 193 of retention slot 190 can be positioned on a proximal side 196 of retention key 195 and the distal side 194 of retention slot 190 can be positioned on a distal side 197 of retention key 195.
- the staple cartridge 150 can be assembled into the staple cartridge channel 122 by coupling the distal end 211 of staple cartridge 150 to the distal end 121 of staple cartridge channel 122 and then rotating the proximal end 213 of staple cartridge 150 into the proximal end 123 of staple cartridge channel 122.
- the retention slots 190 can be configured to engage the retention keys 195 as the staple cartridge 195 is rotated into its seated position within staple cartridge channel 122.
- a predetermined distance 199 between the distal datum surfaces 271 of recesses 270 and the retention slots 190 can be sized and configured such that the retention slots 190 are aligned with the retention keys 195 as the staple cartridge 150 is rotated into position as described above.
- a distance between the distal ends of projections 279 and retention keys 195 can be such that it equals, or at least substantially equals, the distance 199.
- the above-mentioned distances can be measured to the center of the features comprising retention slots 190 and retention keys 195.
- the distance 199 can be measured to a position in the center of slot 190 intermediate the proximal and distal sidewalls thereof, for example.
- the retention slot 190 can further comprise lead-in, beveled, and/or radiused surfaces, which can be configured to guide, or direct, the retention keys 195 into the retention slots 190. In at least one such embodiment, these lead- in surfaces can be wider than the first portions 191.
- the staple cartridge 150 can include a cutting member 160 which can be operably coupled with pusher bar 202 such that, after the staple cartridge 150 has been seated within the staple cartridge channel 122, the pusher bar 202 and cutting member 160 can be advanced together as described above.
- the cutting member 160 can comprise a slot 161 which can be configured to receive a distal drive projection 294 (Fig. 39) at the distal end of pusher bar 202. More particularly, referring now to Fig.
- the slot 161 of cutting member 160 can be aligned with an access slot 290 in the bottom of the staple cartridge 150 such that, as the proximal end 213 of staple cartridge 150 is seated in the proximal end 123 of staple cartridge channel 122, the drive projection 294 of pusher bar 200 can extend through the access slot 290 into the slot 161 of cutting member 160.
- the slot 161 and the drive projection 294 can be sized and configured such that there is little, if any, relative movement therebetween. More particularly, referring again to Figs. 44 and 45, the slot 161 can comprise a distal sidewall 291 and a proximal sidewall 292 wherein the drive projection 294 can be securely received between the sidewalls 291 and 292.
- the pusher bar 202 can further comprise a recess, or slot, 295 positioned proximally with respect to the drive projection 294 wherein the slot 295 can be configured to receive a proximal projection 293 (Fig. 43) extending from the cutting member 160. Similar to the above, the slot 295 can be defined by sidewalls which can be configured to closely receive the proximal projection 293 such that there is little, if any, relative movement therebetween.
- the slot 161 of cutting member 160 can be positioned within the staple cartridge 150 such that it is aligned with the drive projection 294 of pusher bar 202 when the staple cartridge 150 is seated within the staple cartridge channel 122.
- a predetermined distance 299 can be defined between the distal surfaces 271 of recesses 270 and the slot 161, wherein the distance 299 can be equal to, or at least substantially equal to, a predetermined distance 297 between the distal end of the projections 279 and the drive projection 294.
- the cutting member 160 can be moved through a range of positions between a proximal-most position, in which it is positioned in housing 170, and a distal-most position after it has been advanced through the cutting slot 156.
- the distance 299 can be measured with respect to the cutting member 160 when it is in its proximal-most position. Similar to the above, the distances 297 and 299 can be measured to the center or midpoint of the drive projection 297 and slot 161, respectively.
- the surgical instrument 100 can further comprise a locking mechanism which can be configured to hold the pusher bar 202 in position while the cutting member 160 is engaged with the drive projection 294.
- a distance 298 can be defined between the distal end of projections 279 and the recess 295 of pusher bar 202 wherein the distance 298 can be equal to, or at least substantially equal to, the distance between the distal surface 271 of recesses 270 and the projection 293 of cutting member 160.
- the staple cartridge 150 can comprise a clearance region defined between the proximal end 295 of the staple cartridge body 152 and the proximal end 294 of the staple cartridge pan 154, wherein such a clearance region can be configured to receive the pusher bar 202 and/or a portion of the staple cartridge channel 122 therein, for example.
- the pusher bar 202 can be advanced distally once it has been engaged with cutting member 160, wherein such movement is depicted in Fig. 46 which illustrates the distal end 201 of pusher bar 202 in a proximal position (illustrated with solid lines) and a second, distal position (illustrated with phantom lines), for example.
- Such a process can comprise engaging the projections 274 of staple cartridge 150 underneath the projections 276 of staple cartridge channel 122 and then, as described above, rotating the staple cartridge 150 until alignment slots 280 are positioned adjacent to flanges 182.
- the cutting member 160 may not be engaged with the pusher bar 202 and, in addition, the retention slots 190 may not be engaged with the retention keys 195.
- the surgeon, or clinician can adjust the position of the staple cartridge 150 within the staple cartridge channel 122 before the staple cartridge 150 is locked into position.
- the proximal end 213 can be further rotated toward the staple cartridge channel 122.
- the cutting member 160 can come into operable engagement with the pusher bar 202 and, in addition, the retention slots 190 can engage the retention keys 195.
- the cutting member 160 can operably engage the pusher bar 202 at the same time, or at least substantially the same time, as the retention slots engage retention keys 195. More particularly, in at least one embodiment, the drive projection 294 of pusher bar 202 can enter slot 161 of cutting member 160 at the same time that the retention keys 195 enter into, or snap into, the second portions 192 of slots 190. In at least one such embodiment, the cutting member 160 may not be advanceable by the pusher bar 202 until the staple cartridge 150 is snapped into, or seated in, place.
- the cutting member 160 can be operably engaged with the pusher bar 202 before the retention keys 195 are fully seated within the retention slots 190 when the proximal end 213 of the staple cartridge 150 is seated in the proximal end 123 of the staple cartridge channel 122.
- the retention slots 190 can be aligned with each other such that they engage the retention keys 195 at the same time, or at least substantially the same time.
- the retention slots can be configured such that the retention keys 195 enter into the second portions 192 of the retention slots 190 simultaneously.
- the retention slots 190 can be positioned along an axis which is transverse to or perpendicular to a longitudinal axis defined by the cutting slot 156. In various embodiments, the retention slots 190, and the axis defined therebetween, can be positioned proximally with respect to the cutting member 160 regardless of the position of the cutting member 160 including when the cutting member 160 is in its proximal-most position, for example.
- the cutting slot 156 can define a first body portion 152a on a first side thereof and a second body portion 152b on a second, or opposite, side thereof.
- the first body portion 152a can comprise a first plurality of staple cavities 151 and, in addition, the second body portion 152b can comprise a second plurality of staple cavities 151.
- the first body portion 152a can comprise a proximal-most staple cavity 15 la which can be positioned proximally relative to the other staple cavities 151 in first body portion 152a.
- the entirety of staple cavity 151a can be positioned proximally relative to base wall 281 of the alignment slot 280 in first body portion 152a, while, in other embodiments, at least a portion of staple cavity 151a can be positioned proximally relative to the base wall 281.
- the alignment slot 280 in the first body portion 152a is positioned laterally with respect to the proximal-most staple cavity 151a and, in addition, laterally with respect to the cutting slot 156.
- the first body portion 152a can comprise a second proximal-most staple cavity 151c which can be positioned proximally relative to the other staple cavities 151 in first body portion 152a except for proximal-most staple cavity 151a.
- the entirety of staple cavity 151c can be positioned proximally relative to base wall 281 of the alignment slot 280 in first body portion 152a, while, in other embodiments, at least a portion of staple cavity 151c can be positioned proximally relative to the base wall 281.
- the alignment slot 280 is the first body portion 152a is at least partially positioned laterally with respect to the second proximal-most staple cavity 151c.
- the first body portion 152a can comprise a retention slot 190 therein which can be positioned proximally with respect to the staple cavities 151 therein, including the staple cavities 151a and 151c, for example.
- the second body portion 152b can comprise a proximal-most staple cavity 151b which can be positioned proximally relative to the other staple cavities 151 in second body portion 152b.
- the entirety of staple cavity 151b can be positioned proximally relative to base wall 281 of the alignment slot 280 in second body portion 152b, while, in other embodiments, at least a portion of staple cavity 151b can be positioned proximally relative to the base wall 281.
- the alignment slot 280 in the second body portion 152b is positioned laterally with respect to the proximal-most staple cavity 151b and the cutting slot 156.
- the second body portion 152b can comprise a second proximal-most staple cavity 15 Id which can be positioned proximally relative to the other staple cavities 151 in second body portion 152b except for proximal-most staple cavity 151b.
- the entirety of staple cavity 15 Id can be positioned proximally relative to base wall 281 of the alignment slot 280 in second body portion 152b, while, in other embodiments, at least a portion of staple cavity 15 Id can be positioned proximally relative to the base wall 281.
- the alignment slot 280 in the second body portion 152b is at least partially positioned laterally with respect to the second proximal-most staple cavity 15 Id.
- the second body portion 152b can comprise a retention slot 190 therein which can be positioned proximally with respect to the staple cavities 151 therein, including the staple cavities 151b and 15 Id, for example.
- the staple cartridge body 152 can be comprised of plastic and can be formed utilizing an injection molding process. Thereafter, in various embodiments, the staple drivers 168 (Fig. 9) can be assembled into staple cavities 151 and the cutting member 160 can be positioned within the cartridge body 152 such that the cutting member 164 is located within housing 170, as described above. The staple cartridge pan 154 can then be assembled to the staple cartridge body 152. In various embodiments, referring now to Fig.
- the distal end 277 of staple cartridge pan 154 can be aligned with the proximal end 295 of the staple cartridge body 152 such that the staple cartridge body can be slid within the staple cartridge pan 154 between opposing walls 154a and 154b, for example.
- the staple cartridge body 152 and pan 154 can be slid relative to one another until pan projections 276 are positioned within recesses 270 and projections 274 are positioned within pan recesses 275.
- the lock projections 288 extending from staple cartridge body 152 can be received within the lock apertures 287 in staple cartridge pan 154 such that pan 154 can be locked to staple cartridge body 152.
- the sidewalls 154a and 154b of pan 154 can flex or splay outwardly as they pass over lock projections 288 and then elastically return inwardly when lock apertures 287 are aligned with lock projections 288.
- the arms 155 extending from pan 154 can be aligned with and positioned within the retention slots 287 in staple cartridge body 152.
- the staple cartridge 150 can further comprise a retention member, such as retention member 300, for example, which can be configured to selectively obstruct slot 301 in staple cartridge body 152, for example.
- the retention member 300 can comprise a pivotable arm 303 which can be rotated between a first position in which it extends across slot 301 (illustrated in solid lines) and a second position in which it is positioned adjacent to slot 301 (illustrated in phantom lines).
- an integral pivot pin 302 (Fig. 41) can extend from arm 303 into an aperture in staple cartridge body 152 which can define an axis about which the arm 303 can be rotated.
- the arm 303 can include a lock member 304 extending therefrom which can be configured to be releasably engaged with a lock cavity 305 in staple cartridge body 152 in order to hold the arm 303 in at least one of its first and second positions, for example.
- the positioning of arm 303 across slot 301 can prevent, or at least inhibit, the cutting member 160, for example, from sliding out of the staple cartridge 150.
- the staple cartridge 150 can comprise gripping portions positioned on opposite sides thereof, for example.
- the staple cartridge body 152 can comprise lateral portions 285 positioned adjacent to alignment slots 280 wherein the lateral portions 285 can be gripped and/or pushed on by a clinician in order to seat the proximal end 213 of staple cartridge 150 in the proximal end of staple cartridge channel 122, for example.
- Such a force can be applied to top, or tissue-contacting, surfaces of the lateral portions 285 as the proximal end 213 of staple cartridge 150 is rotated into position as described above.
- a lifting force can be applied to lateral portions 285 in order to lift the proximal end 213 of staple cartridge 150 out of the staple cartridge channel 122.
- each lateral portion 285 can comprise one or more steps, ridges, and/or elevations, such as elevations 287a, 287b, and/or 287c, for example, which can be configured to improve the clinician's grip on the lateral portions 285.
- the elevations 287a, 287b, and/or 287c can be positioned at different heights relative to one another.
- the staple cartridge 150 can be removed from channel 122 by lifting the proximal end 213 of staple cartridge 150 out of channel 122 and then unhooking, or disengaging, the distal end 211 of staple cartridge 150 from the distal end 121 of channel 122, for example.
- the slot 161 within cutting member 160 can be moved away and disengaged from the drive projection 294 of pusher bar 202, for example.
- the pusher bar 202 and cutting member 160 can be returned to their proximal positions before the staple cartridge 150 is removed from the staple cartridge channel 122.
- the cutting edge 165 can be positioned within the housing 170.
- Fig. 48 an alternative embodiment of a staple cartridge 150' is depicted without a housing 170.
- the cutting edge 165 can at least partially extend above the deck surface 158 of the staple cartridge body 152 in its proximal position and/or any other distally-advanced positions, for example.
- anvil 130 can include one or more apertures, slots, or recesses 179 (Fig. 17) which can be configured to receive at least a portion of housing 170 when anvil 130 is brought into close opposition to staple cartridge 150, for example.
- sufficient clearance can be present between housing 170 and recess 179 such that anvil 130 and staple cartridge 150 can be moved relative to each other without interference, or at least substantial interference, therebetween.
- an opposing anvil can have more than one corresponding aperture for receiving the housings.
- an anvil can include a movable cutting member and at least one housing for at least partially covering, enclosing, and/or surrounding the cutting member.
- both an anvil and a staple cartridge can comprise at least one movable cutting member and/or at least one housing configured to at least partially cover, surround, or enclose the cutting members when they are in a proximal position, for example.
- pusher bar assembly 200 can be advanced distally in order to move staple sled assembly 160 within staple cartridge assembly 150.
- the wedge-like cam surfaces 167 of staple sled 162 can be moved into engagement with the sloped surfaces 169 on staple drivers 168 to sequentially, and/or
- anvil 130 can include one or more staple forming surfaces, such as staple pockets 132, for example, which can be configured to deform the staples.
- anvil 130 can further include a slot, channel, or groove 133 which can be configured to slidably receive at least a portion of staple sled 162, cutting member 164, and/or pusher bar 202, for example.
- an anvil can include an anvil plate which can be securely and/or immovably positioned within an anvil channel defined within the anvil.
- anvil 130 can include an anvil plate 134 movably positioned within anvil channel 136.
- anvil channel 136 can include opposite side walls 137 and, in addition, a base 138 extending between side walls 137.
- anvil 130 can further include a distal nose portion 139, for example, assembled thereto wherein nose portion 139 can be configured to be press-fit and/or snap-fit into anvil channel 136, for example, such that nose portion 139 can be securely retained therein.
- nose portion 139 can be comprised of a soft and/or pliable material, such as rubber, for example, and can comprise any suitable shape which can facilitate the insertion of anvil 130 into a surgical site, for example.
- a nose portion, such as nose portion 139' can be retained to an anvil by one or more fasteners 139a'.
- a staple cartridge channel and/or staple cartridge, such as staple cartridge 150 can include a nose portion, such as nose portion 153, for example, which can facilitate the insertion of staple cartridge 150 into a surgical site, for example
- staples can be deployed from a staple cartridge and deformed against an anvil.
- the distance between the staple forming surfaces on anvil 130 and staple sled 162 can determine the amount in which the staples are deformed. For example, if the distance between anvil pockets 132 on anvil 130 and top surfaces 135 on staple sled 162 (Figs. 10-12) is relatively large, the staples will be deformed a lesser amount as compared to when the distance between anvil pockets 132 and sled surfaces 135 is relatively small.
- the staples will be deformed a greater amount as compared to when the distance between anvil pockets 132 and sled surfaces 135 is relatively large. Often, the distance between anvil pockets 132 and sled surfaces 135 is referred to as the forming height of the staples.
- the forming height of the staples can be measured between the top surface, or deck, of the staple cartridge and the staple forming surfaces on the anvil.
- any reference to a staple forming height, or the like can include one or both manners of measurement, where appropriate, and/or any other suitable manner of measurement.
- a surgical stapling instrument such as stapling instrument 100, for example, can include means for adjusting the staple forming height.
- an anvil can include one or more forming surfaces which can be moved toward and/or away from a staple cartridge in order to set the forming height of the staples.
- anvil 130 can include anvil plate 134 which can be movably and/or slidably positioned within anvil channel 136.
- anvil 130 can further include one or more retention, or guide, pins 140, wherein anvil plate 134 can include one or more retention, or guide, slots 141 configured to slidably receive at least a portion of pins 140.
- pins 140 and/or slots 141 can be configured to define a predetermined path along which anvil plate 134 can be moved.
- pins 140 and slots 141 can be structured and arranged such that anvil plate 134 can be moved along a linear, or at least substantially linear, path, wherein the linear path can be at least partially defined by axes 142 and 143, for example.
- Other embodiments are envisioned in which an anvil plate can be moved along a non-linear path, such as a curved and/or curvi-linear path, for example.
- pins 140 can be retained within apertures 144 in side walls 137 wherein, in at least one embodiment, pins 140 can be press-fit within apertures 144. In any event, as described herein, pins 140 can guide anvil plate 134 as it is moved toward and/or away from staple cartridge 150, for example.
- a surgical stapling instrument such as stapling instrument 100, for example, can include one or more adjustment members configured to position a portion of an anvil, such as anvil plate 134, for example, relative to other portions of an anvil assembly and/or an opposing staple cartridge.
- stapling instrument 100 can include anvil plate adjustment member 230 which can be configured to limit the range of motion of anvil plate 134. In at least one such embodiment, referring to Figs.
- adjusting member 230 can be positioned intermediate anvil plate 134 in a first position in which first surface, or step, 231 of adjusting member 230 is positioned intermediate base 138 of anvil channel 136 and first positioning surface 145 on anvil plate 134.
- first step 231 can define the amount of relative movement possible, or permitted, between anvil plate 134 and anvil channel 136.
- anvil plate 134 can contact the tissue and slide upwardly toward base 138 until first positioning surface 145 contacts first step 231.
- adjusting member 230 can prevent, or at least inhibit, anvil plate 134 from moving further toward base 138.
- adjusting member 230 can act as a stop such that the distance between base 138 and tissue-contacting surface 148 on anvil plate 134 can be defined by a first distance 234. While base 138 is used as a reference datum in the present example, other portions of anvil 130 and/or an opposing staple cartridge, for example, could be used as reference datums.
- second surface, or step, 232 of adjusting member 230 can be positioned intermediate base 138 and second positioning surface 146 on anvil plate 134, and, in addition, third surface, or step, 233 can be positioned intermediate base 138 and third positioning surface 147. Referring to Fig.
- adjustment member 230 can include two or more sets of steps, 231, 232, and/or 233 and anvil plate 134 can include two or more sets of positioning surfaces 145, 146, and/or 147. While first step 231 and first positioning surface 145 are described above as being configured to control the position of anvil plate 134, the second and third steps (232, 233) of adjustment member 230 and the second and third positioning surfaces (146, 147) of anvil plate 134, respectively, can also be configured to control the position of anvil plate 134.
- step 231 the surface which controls the position of anvil plate 134
- steps 232 and 233 can control the position of anvil plate 134 as well.
- the first position of adjustment member 230 can provide for a relatively small, or short, staple forming height.
- the first position of an adjustment member can provide for an intermediate, a relatively large, and/or any other suitable staple forming height.
- a surgeon can proceed to use the surgical stapling instrument to staple and/or incise tissue as described above.
- a surgeon, or other clinician can move adjustment member 230 such that adjustment member 230 can permit anvil plate 134 to slide upwardly a different distance when anvil plate 134 contacts tissue positioned intermediate anvil 130 and staple cartridge 150.
- the distance in which anvil plate 134 is permitted to slide upwardly can be larger, thereby providing a larger forming height for the staples.
- the adjustment member can be moved such that anvil plate 134 can slide upwardly a shorter distance when anvil plate 134 contacts the tissue, for example, thereby providing a shorter staple forming height.
- upward can mean vertically upward, the term is not so limited; rather, “upward” can mean any direction which is toward the base of the anvil and/or away from a staple cartridge, for example.
- adjustment member 230 can be moved between its first position, illustrated in Fig. 21, and a second position, illustrated in Fig.
- adjustment member 230 can be slid proximally in order to move adjustment member 230 between its first and second positions, although embodiments are envisioned where an adjustment member can be slid distally and/or any other suitable direction in order to adjust adjustment member 230.
- first surface, or step, 231 can be positioned intermediate base 138 and second positioning surface 146 of anvil plate 134. In such a second position, first step 231 can once again define the amount of relative movement permitted between anvil plate 134 and anvil channel 136.
- adjusting member 230 can act as a stop such that the distance between base 138 and tissue-contacting surface 148 on anvil plate 134 can be defined by a second distance 235.
- adjustment member 230 can be moved between its second position, illustrated in Fig. 22, and a third position, illustrated in Fig. 23, in order to once again increase the staple forming height. As indicated by arrow "P" in Fig. 23, adjustment member 230 can be slid proximally in order to move adjustment member 230 between its second and third positions.
- first surface, or step, 231 can be positioned intermediate base 138 and third positioning surface 147. In such a third position, first step 231 can once again define the amount of relative movement between anvil plate 134 and anvil channel 136.
- adjusting member 230 can act as a stop such that the distance between base 138 and tissue-contacting surface 148 on anvil plate 134 can be defined by a third distance 236. While adjustment member 230 can be selectively moved between three positions as described above to provide three different staple forming heights, other embodiments are envisioned which comprise an adjustment member which can be moved between more than three positions to provide more than three different staple forming heights. For example, an adjustment member can be movable between four positions in order to provide four staple forming heights. Further embodiments are envisioned which comprise an adjustment member which can be moved between two positions to provide two staple forming heights.
- adjustment member 230 can comprise three surfaces, or steps, 231, 232, and 233 while anvil plate 134 can comprise three
- first surface 231 can be positioned such that it abuts or is adjacent to first adjustment surface 145
- second surface 232 can be positioned such that it abuts or is adjacent to second adjustment surface 146
- third surface 233 can be positioned such that it abuts or is adjacent to third adjustment surface 147.
- surfaces 231, 232, and 233 of adjustment member 230 can be sequentially indexed relative to surfaces 145, 146, and 147 of anvil plate 134.
- an adjustment member can have the same number of steps as the number of positioning surfaces on an anvil plate.
- an adjustment member has more steps than positioning surfaces on the anvil plate.
- an anvil plate can include one positioning surface wherein the steps of an adjustment member can be selectively utilized to limit the upward movement of the anvil plate, for example.
- an anvil plate may include one positioning surface, such as positioning surface 145, for example, where steps 231, 232, and 233 of adjustment member 230, for example, can be selectively positioned intermediate base 138 and positioning surface 145.
- first step 231 can have a first thickness or height which can stop, or limit, the upward movement of anvil plate 134 so as to define a first staple forming height
- second step 232 can have a second thickness or height which can stop, or limit, the upward movement of anvil plate 134 so as to define a second staple forming height
- third step 233 can have a third thickness or height which can stop, or limit, the upward movement of anvil plate 134 so as to define a third staple forming height.
- the thickness or height of steps 231, 232, and/or 233 can be measured between a back surface 237 of adjustment member 230 and a surface on the steps (231, 232, 233) which will contact anvil plate 134.
- the difference in height, or thickness, between first step 231 and second step 232 can be the same, or at least substantially the same, as the difference in height, or thickness, between second step 232 and third step 233.
- the step heights can increase at a linear rate, or an at least substantially linear rate.
- the difference in height, or thickness, between the first and second steps can be different than the difference in height, or thickness, between the second and the third steps.
- the first, second, and third steps may not increase or decrease in height, or thickness, at a linear rate; rather, although not illustrated, the steps may increase or decrease in height, or thickness, in a non-linear and/or geometric rate.
- an adjustment member such as adjustment member 230
- a surgical stapling instrument can include an actuator configured to move the adjustment member.
- surgical stapling instrument 100 can include actuator 250 which can be operably attached to adjustment member 230 such that a force can be applied to actuator 250 and transmitted to adjustment member 230.
- actuator 250 can include grasping portions, or handles, 252 which can be configured to be grasped by a surgeon, for example, in order to advance or retract adjustment member 230 within anvil 130 as described above.
- grasping portions 252 can extend from actuator body 251, wherein actuator body 251 can include one or more apertures, slots, or cavities 253 which can be configured to receive at least a portion of adjustment member 230.
- adjustment member 230 can include lock 254 extending therefrom, wherein at least a portion of lock 254 can be received within aperture 253 so as to retain actuator body 251 to adjustment member 230.
- lock 254 can include one or more resilient, or flexible, legs 255 which can be deflected when they are inserted into aperture 253 but resiliently return, or at least partially return, to their unflexed position after feet 256 of legs 255 are sufficiently pushed through aperture 253.
- feet 256 can prevent, or at least inhibit, actuator body 251 from being detached from adjustment member 230.
- surgical stapling instrument 100 can further include a detent mechanism which can be configured to hold, or releasably hold, actuator 250 and/or adjustment member 230 in position.
- detent member 260 can be attached to actuator 250 wherein, in at least some
- actuator body 251 can include one or more channels, grooves, or recesses 257 which can be configured to receive and/or retain a detent body 261 of detent member 260 therein.
- detent body 261 can include one or more apertures 263, and/or any other suitable channels, slots, or grooves, which can be configured to receive one or more fasteners for securing detent body 261 to actuator 251, for example.
- Detent member 260 can further include detent legs 262 which can be configured to engage one or more recesses, apertures, or grooves 101 (Figs. 2-7) in first frame portion 110, for example. More particularly, referring to Figs.
- each side flange 128 can include one or more recesses 101 (101a, 101b, and 101c) defined therein wherein detent legs 262 can be biased into engagement with the top surfaces of side flanges 128 such that detent legs 262 can be slid into, and slid out of, recesses 101.
- each side flange can include three recesses 101 which can be configured to removably hold actuator 250 in a first, distal position, a second, intermediate position, and a third, proximal position, wherein the first, second, and third positions of actuator 250 can respectively correspond with the first, second, and third positions of adjustment member 230 described above.
- detent legs 262 of detent member 260 can be positioned within recess 101a so as to removably retain actuator 250 and adjustment member 230 in their first positions.
- actuator 250 can be moved proximally into its second position such that detent legs 162 are positioned within recess 101b and actuator 250 and adjustment member 230 are retained in their second positions.
- actuator 250 can be moved proximally into its third position such that detent legs 162 are positioned within recess 101c and actuator 250 and adjustment member 230 are retained in their third positions.
- detent legs 162 can be configured such that actuator 250 can be returned to its first and/or second positions.
- adjustment member 230 can be moved along a predetermined path between two or more positions by actuator 250.
- surgical stapling instrument 100 can include one or more guides for controlling or limiting the movement of adjustment member 230 and/or actuator 250.
- adjustment member 230 can be closely received between side walls 137 of anvil 130 such that side walls 137 can guide adjustment member 230.
- side walls 137 can be configured to control or limit the lateral or side-to-side movement of adjustment member 230.
- detent legs 162 of detent member 160 can comprise resilient members which can be configured to apply an upward biasing or pulling force on adjustment member 230 so as to position adjustment member 230 against, or at least adjacent to, base 138 and intermediate side walls 137.
- base 138 of anvil 130 can further include guide slot 149 which can be configured to receive at least a portion of adjustment member 230 and/or actuator 250 therein such that guide slot 149 can limit the movement of adjustment member 230 and actuator 250.
- lock 254 of adjustment member 230 can be configured to extend through guide slot 149 such that, when lock 254 is inserted into aperture 253 of actuator 250 as described above, base 138 of anvil 130 can be captured intermediate adjustment member 230 and actuator 250.
- guide slot 149 can be configured to limit the movement of lock 254 such that adjustment member 230 can be prevented, or at least inhibited, from being moved distally when adjustment member 230 is in its first, or distal-most, position and/or, similarly, prevented, or at least inhibited, from being moved proximally when adjustment member 230 is in its third, or proximal-most, position.
- a detent member similar to detent member 260, for example, can be utilized to bias first handle portion 102 and second handle portion 104 away from one another.
- surgical stapling instrument 100' can include a detent member 260' configured to position first handle portion 102 and second handle portion 104 such that a gap exists between anvil 130 and staple cartridge 150.
- a detent member 260' configured to position first handle portion 102 and second handle portion 104 such that a gap exists between anvil 130 and staple cartridge 150.
- detent member 260' can be sufficiently mounted to second handle portion 104 such that detent legs 262' extending from detent member 260' can contact flanges 128 and, when compressed, apply a biasing force to the first and second handle portions. As seen in Fig. 37, legs 262' can contact surfaces lOld on flanges 128.
- latch mechanism 180 can be moved into a partially-closed position such that latch arms 188 can engage, and at least partially surround, latch projections 131. In this configuration, a surgeon can manipulate the instrument and, when satisfied with its position, move latch mechanism 180 into a closed position and further compress detent legs 262'.
- detent member 260' can be affixed, or otherwise operably engaged with, actuator 250 such that, when actuator 250 is moved between its first, second, and third positions as described above, legs 262' can engage recesses 101a, 101b, and 101c, respectively.
- actuator 250 can have a pre-staged position in which actuator 250 is positioned distally with respect to its first position and, in addition, surfaces lOld can comprise pre-stage surfaces against which legs 262' can be positioned when actuator 250 is in its pre-staged position.
- an adjustment member can be slid, or translated, between first and second positions so as to adjust the forming height of staples deployed by a surgical stapling instrument.
- an adjustment member can be configured to positively displace an anvil plate toward and/or away from an opposing staple cartridge, for example.
- a surgical stapling instrument can include one or more biasing members, such as springs, for example, configured to position the anvil plate against the adjustment member such that, when the adjustment member is moved between its first and second positions, the adjustment member can displace the anvil plate between first and second positions in order to set first and second staple forming heights.
- an adjustment member can be configured to cam a portion of an anvil into position.
- an adjustment member can be slid along an axis in order to positively displace an anvil plate.
- a rotatable adjustment member can be configured to positively displace an anvil plate toward and/or away from a staple cartridge, for example.
- surgical instrument 100' can include, similar to the above, a first handle portion 102', a second handle portion 104', and a latching mechanism 180' which can be utilized to clamp tissue intermediate anvil 130' and staple cartridge 150'.
- latching mechanism 180' can be pivotably coupled to first portion 102' by one or more pivot pins 182', wherein latching mechanism 180' can include one or more latch arms 188' which can be configured to engage second portion 104' and latch the first and second handle portions together. Also similar to the above, referring to Figs.
- surgical instrument 100' can further include pusher bar assembly 200' which can be configured to advance a cutting member and/or staple sled within end-effector 120'.
- pusher bar assembly 200' can include a proximal end 203' and an actuator 204', wherein actuator 204' can be rotatably mounted to proximal end 203 ' and selectively positioned on first and second sides of stapling instrument 100'.
- surgical stapling instrument 100' can comprise the same, or similar, features to those described in connection with surgical stapling instrument 100 and can be operated in the same manner, or a similar manner, as instrument 100 and, as a result, such details are not repeated herein.
- surgical instrument 100' can include a rotatable adjustment member 230' which can be selectively positioned in at least first and second positions so as to provide different staple forming heights.
- surgical instrument 100' can include an actuator 250' which can be operably connected to adjustment member 230' such that actuator 250' can move adjustment member 230' between at least its first and second positions.
- actuator 250' can include actuator body 251 ' and grasping portion, or handle, 252' .
- Actuator body 251 ' can include an aperture 258' which can be configured to receive a proximal end 238' of adjustment member 230' such that rotational motion, torque, and/or forces can be transmitted between actuator 250' and adjustment member 230'.
- aperture 258' can comprise a non-circular profile and/or a profile which includes one or more flat drive surfaces configured to transmit rotational motion between actuator body 251 ' and actuator 230'.
- aperture 258' can be sized and configured to closely receive proximal end 238' of actuator 230'.
- aperture 258' can be configured to receive proximal end 238' in a press-fit and/or snap-fit arrangement.
- handle portion 104' can include one or more slots 259' which can be configured to permit at least a portion of actuator body 251 ' to extend therethrough such that grasping portion 252' can be assembled to actuator body 251 ' with at least a portion of handle portion 104' positioned therebetween.
- second handle portion 104' can further include recess 253' which can be configured such that at least a portion, if not all, of grasping portion 252' is positioned within recess 253'.
- recess 253' can be configured such that grasping portion 252' does not extend above the top surface of second handle portion 104' although, in other embodiments, an upper portion of grasping portion 252' can extend above second handle portion 104, as illustrated in Fig. 30, such that grasping portion 252' can be easily accessed by a surgeon.
- an adjustment member can be rotatable between at least first and second positions in order to adjust the forming height of staples deployed by a surgical stapler. In certain embodiments, referring to Fig.
- a surgical stapling instrument can include an adjustment member rotatably positioned within an anvil wherein the adjustment member can be configured to limit the relative movement of a movable anvil portion.
- surgical stapling instrument 100' can include an anvil plate 134' which can be slidably retained within anvil channel 136' by retention, or guide, pins 140', wherein guide pins 140 'can be configured to allow anvil plate 134' to slide upwardly when anvil plate 134' comes into contact with tissue as described above. Referring to Figs.
- adjustment member 230' can be positionable in a first position, or orientation, such that it can limit the upward movement of anvil plate 134' within anvil channel 136' and dictate the staple forming height of the staples.
- adjustment member 230' can include opposing first surfaces 23 ⁇ which can be positioned intermediate base 138' of anvil channel 136' and positioning surface 145' of anvil plate 134' such that, when positioning surface 145' contacts one of first surfaces 23 , tissue- contacting surface 148' of anvil plate 134' can be positioned a first distance 234' away from a datum surface 129' on anvil 130', for example.
- forming surfaces 132' can be positioned a first distance away from a staple cartridge such that, when staples are deployed from the staple cartridge, the staples can be deformed to a first staple height.
- a first diameter 241 ' can be defined between first surfaces 231 ' wherein the first diameter 241 ' can define the maximum upward position of anvil plate 134' within anvil channel 136'.
- adjustment member 230' can be rotated in order to adjust the forming height of the staples.
- adjustment member 230' can be rotated between its first position, or orientation, (Figs. 30 and 31) and a second position, or orientation (Figs 32 and 33).
- handle 252' can be rotated in a direction indicated by arrow "A" in order to move adjustment member 230' between its first and second positions.
- actuator 230' when actuator 230' is in its second position, or orientation, actuator 230' can limit the upward movement of anvil plate 134' within anvil channel 136' and dictate the staple forming height of the staples.
- adjustment member 230' can include opposing second surfaces 232' which can be positioned intermediate base 138' and positioning surface 145' such that, when positioning surface 145' contacts one of second surfaces 232', tissue- contacting surface 148' of anvil plate 134' can be positioned a second distance 235' away from datum surface 129', for example.
- forming surfaces 132' can be positioned a second distance away from a staple cartridge such that, when staples are deployed from the staple cartridge, the staples can be deformed to a second staple height.
- a second diameter 242' can be defined between second surfaces 232', wherein second diameter 242' can define the maximum upward position of anvil plate 134' within anvil channel 136'.
- first surfaces 231 ' and second surfaces 232' can be defined by flat, or at least substantially flat, surfaces, other embodiments are envisioned in which the first and second surfaces 231 ' and 232' can include at least partially arcuate, or curved, contours.
- adjustment member 230' may include one or more clearance slots 240' which can be configured to provide clearance between actuator 230' and retention pins 140'.
- Clearance slots 240' can be configured to provide clearance between actuator 230' and retention pins 140' when actuator 230' is in its first position, second position, and/or any other suitable position.
- adjustment member 230' can be rotated between its first position, or orientation, (Figs. 30 and 31) and a third position, or orientation (Figs 34 and 35).
- handle 252' can be rotated in a direction indicated by arrow "B" in order to move adjustment member 230' between its first and third positions.
- adjustment member 230' can include opposing third surfaces 233' which can be positioned intermediate base 138' and positioning surface 145' such that, when positioning surface 145' contacts one of third surfaces 233', tissue-contacting surface 148' of anvil plate 134' can be positioned a third distance 236' away from datum surface 129', for example.
- forming surfaces 132' can be positioned a third distance away from a staple cartridge such that, when staples are deployed from the staple cartridge, the staples can be deformed to a third staple height.
- a third diameter 243' can be defined between third surfaces 233', wherein third diameter 243' can define the maximum upward position of anvil plate 134' within anvil channel 136'.
- third surfaces 233' can be defined by an at least partially arcuate contour, although other embodiments are envisioned in which third surfaces 233' can include flat, or at least substantially flat, contours.
- adjustment member 230' can be configured such that the largest distance, or diameter, between the arcuate third surfaces 233' can be utilized to define the third staple height.
- adjustment member 230' can be positioned in a first position, or orientation, to set a first forming height for the staples deployed by surgical stapling instrument 100'.
- actuator 250' can be utilized to move adjustment member 230' into its second position, or orientation, to set a second forming height for the staples. To do this, in at least one
- a force can be applied to handle 252' which can cause handle 252', and adjustment member 230' attached thereto, to rotate in a direction indicated by arrow "A".
- adjustment member 230' and/or actuator 250' can be sufficiently retained such that, when adjustment member 230' is rotated, adjustment member 230' can be rotated about an axis, such as axis 245' (Fig. 27), for example.
- the proximal end 203' of pusher bar assembly 200' can include one or more grooves, channels, or recesses 205' which can be configured to receive and/or retain at least a portion of adjustment member 230' and/or actuator 250' therein.
- the second position, or orientation, of adjustment member 230' can allow anvil plate 134' to slide a larger distance within anvil channel 136' as compared to when adjustment member 230' is in its first position.
- the second staple forming height can be larger than the first staple forming height.
- actuator 250' can be utilized to move adjustment member 230' into its third position, or orientation, to set a third forming height for the staples.
- a force can be applied to handle 252' which can cause handle 252', and adjustment member 230' attached thereto, to rotate in a direction indicated by arrow "B".
- the third position, or orientation, of adjustment member 230' can allow anvil plate 134' to slide a smaller distance within anvil channel 136' as compared to when adjustment member 230' is in its first position.
- the first and second staple forming heights can be larger than the third staple forming height.
- the first position of adjustment member 230', and actuator 250' can represent an intermediate position, wherein adjustment member 230' can be selectively moved into its second and third positions directly from its first position.
- the first position of adjustment member 230' can represent an intermediate staple height, wherein the second and third staple positions of adjustment member 230' can represent taller and shorter staple heights, respectively.
- surgical stapling instrument 100' can include one or more indicia thereon which can be configured to convey the staple forming heights, or at least relative forming heights, that can be selected.
- second handle portion 104' can include a first indicium 245 ' which can indicate an intermediate, or first, staple height, a second indicium 246' which can indicate a taller, or second, staple height, and, in addition, a third indicium 247' which can indicate a shorter, or third, staple height.
- first surfaces 231 ', second surfaces 232', and third surfaces 233' can comprise or define, or at least partially comprise or define, a perimeter, or circumference, of adjustment member 230'.
- the perimeter, or circumference, of adjustment member 230' may be non-circular. In certain embodiments, though, the perimeter, or circumference of adjustment member 230', may be symmetrical, substantially symmetrical, and/or non-symmetrical.
- an adjustment member can comprise a cam rotatably positioned intermediate base 138' of anvil 130' and adjustment surface 145' of anvil plate 134', for example.
- one or more of first surfaces 23 , second surfaces 232', and third surfaces 233' can comprise or define a cam profile which, similar to the above, can be configured to either positively position anvil plate 134' and/or provide a stop against which anvil plate 134' can be positioned.
- an adjustment member can be slid and rotated in order to set two or more staple forming heights for staples deployed by a surgical stapling instrument.
- an adjustment member can comprise a cam profile which can be defined along the length of the adjustment member wherein longitudinal and/or rotational movement can be utilized to move the cam profile between at least first and second positions.
- surgical instrument 100' can further include a detent mechanism configured to hold, or at least releasably hold, actuator 250' in position.
- surgical instrument 100' can further include detent member 260' comprising detent body 261 ' and one or more detent legs 262'.
- detent body 261 ' can include one or more grooves, recesses, or channels 263' which can be configured to receive at least a portion of proximal end 105' of second handle portion 104' therein such that detent member 260' can be retained in position.
- proximal end 105 ' can further include one or more grooves, channels, or recesses 265' which can be configured to closely receive detent member 260'.
- at least a portion of detent body 261 ', such as channel 263', for example, can be press-fit, snap-fit, and/or otherwise suitably retained in recess 265'.
- each detent leg 262' of detent member 260' can include one or more projections 264' extending therefrom which can be configured to engage actuator body 251 ' and releasably hold actuator 250' in position.
- actuator body 251 ' can include one or more recesses, or holes, 269' which can be configured to receive a projection 264'.
- the projection can be configured to hold actuator 250' in its first position, for example, until a sufficient force is applied to actuator 250' so as to cause the projection 264' to be displaced out of recess 269'. More particularly, the force applied to actuator 250' can be transmitted to the projection 264' and, owing to cooperating surfaces between the projection 264' and recess 269', the detent leg 262' associated with the projection 264' can be flexed or moved proximally to allow actuator body 251 ' to be moved relative thereto.
- recess 265' can include elongate portions 266' which can each be configured to receive at least a portion of legs 262' such that legs 262' can move relative to handle portion 104 ' .
- actuator body 251 ' can contact a projection 264' extending from another leg 262' and deflect the leg 262' proximally such that, once actuator 250' is in its second or third positions, the leg 262' can spring forward, or distally, such that the projection 264' can be secured within recess 269'.
- the interaction between projections 264' and the sidewalls of recess 269' can be such that actuator 250 'can be securely held in one of its first, second, and third positions, for example, yet permit actuator 250' to be moved upon a sufficient application of force.
- the detent member 260' can prevent, or at least inhibit, actuator 250' and, correspondingly, adjustment member 230' from being unintentionally displaced.
- the devices disclosed herein can be designed to be disposed of after a single use, or they can be designed to be used multiple times. In either case, however, the device can be reconditioned for reuse after at least one use.
- Reconditioning can include any combination of the steps of disassembly of the device, followed by cleaning or replacement of particular pieces, and subsequent reassembly.
- the device can be disassembled, and any number of the particular pieces or parts of the device can be selectively replaced or removed in any combination.
- the device can be reassembled for subsequent use either at a reconditioning facility, or by a surgical team immediately prior to a surgical procedure.
- reconditioning of a device can utilize a variety of techniques for disassembly,
- the invention described herein will be processed before surgery.
- a new or used instrument is obtained and if necessary cleaned.
- the instrument can then be sterilized.
- the instrument is placed in a closed and sealed container, such as a plastic or TYVEK bag.
- the container and instrument are then placed in a field of radiation that can penetrate the container, such as gamma radiation, x-rays, or high- energy electrons.
- the radiation kills bacteria on the instrument and in the container.
- the sterilized instrument can then be stored in the sterile container.
- the sealed container keeps the instrument sterile until it is opened in the medical facility.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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EP11710934.8A EP2547267B1 (en) | 2010-03-17 | 2011-03-08 | Staple cartidge |
CA2793295A CA2793295C (en) | 2010-03-17 | 2011-03-08 | Staple cartridge |
JP2013500080A JP5897541B2 (en) | 2010-03-17 | 2011-03-08 | Staple cartridge |
BR112012023435-8A BR112012023435B1 (en) | 2010-03-17 | 2011-03-08 | staple cartridge |
AU2011227615A AU2011227615B2 (en) | 2010-03-17 | 2011-03-08 | Staple cartridge |
PL11710934T PL2547267T3 (en) | 2010-03-17 | 2011-03-08 | Staple cartidge |
CN201180014419.7A CN102933159B (en) | 2010-03-17 | 2011-03-08 | Nail bin |
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US12/725,993 US8540133B2 (en) | 2008-09-19 | 2010-03-17 | Staple cartridge |
US12/725,993 | 2010-03-17 |
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WO2011115780A1 true WO2011115780A1 (en) | 2011-09-22 |
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PCT/US2011/027504 WO2011115780A1 (en) | 2010-03-17 | 2011-03-08 | Staple cartidge |
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US (1) | US8540133B2 (en) |
EP (1) | EP2547267B1 (en) |
JP (1) | JP5897541B2 (en) |
CN (1) | CN102933159B (en) |
AU (1) | AU2011227615B2 (en) |
BR (1) | BR112012023435B1 (en) |
CA (1) | CA2793295C (en) |
PL (1) | PL2547267T3 (en) |
WO (1) | WO2011115780A1 (en) |
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US9492170B2 (en) | 2011-08-10 | 2016-11-15 | Ethicon Endo-Surgery, Inc. | Device for applying adjunct in endoscopic procedure |
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US9050084B2 (en) | 2011-09-23 | 2015-06-09 | Ethicon Endo-Surgery, Inc. | Staple cartridge including collapsible deck arrangement |
-
2010
- 2010-03-17 US US12/725,993 patent/US8540133B2/en active Active
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2011
- 2011-03-08 CA CA2793295A patent/CA2793295C/en not_active Expired - Fee Related
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- 2011-03-08 CN CN201180014419.7A patent/CN102933159B/en active Active
- 2011-03-08 PL PL11710934T patent/PL2547267T3/en unknown
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- 2011-03-08 WO PCT/US2011/027504 patent/WO2011115780A1/en active Application Filing
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AU2011227615B2 (en) | 2013-11-14 |
CA2793295A1 (en) | 2011-09-22 |
EP2547267B1 (en) | 2020-12-09 |
BR112012023435A2 (en) | 2017-10-24 |
CN102933159B (en) | 2016-01-20 |
JP2013521934A (en) | 2013-06-13 |
US20100213241A1 (en) | 2010-08-26 |
AU2011227615A1 (en) | 2012-09-06 |
US8540133B2 (en) | 2013-09-24 |
CN102933159A (en) | 2013-02-13 |
BR112012023435B1 (en) | 2021-01-05 |
EP2547267A1 (en) | 2013-01-23 |
JP5897541B2 (en) | 2016-04-13 |
CA2793295C (en) | 2018-03-27 |
PL2547267T3 (en) | 2021-05-31 |
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