WO2013180904A1 - Outil chirurgical endoluminal ayant une section d'orientation selon un petit rayon de courbure - Google Patents

Outil chirurgical endoluminal ayant une section d'orientation selon un petit rayon de courbure Download PDF

Info

Publication number
WO2013180904A1
WO2013180904A1 PCT/US2013/039672 US2013039672W WO2013180904A1 WO 2013180904 A1 WO2013180904 A1 WO 2013180904A1 US 2013039672 W US2013039672 W US 2013039672W WO 2013180904 A1 WO2013180904 A1 WO 2013180904A1
Authority
WO
WIPO (PCT)
Prior art keywords
link
steering
links
handle
attached
Prior art date
Application number
PCT/US2013/039672
Other languages
English (en)
Inventor
Sean Mitchell
Richard C. Ewers
Tracy D. Maahs
Original Assignee
Usgi Medical, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US13/483,371 external-priority patent/US20120238952A1/en
Application filed by Usgi Medical, Inc. filed Critical Usgi Medical, Inc.
Publication of WO2013180904A1 publication Critical patent/WO2013180904A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
    • A61B1/0052—Constructional details of control elements, e.g. handles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
    • A61B1/0055—Constructional details of insertion parts, e.g. vertebral elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
    • A61B1/0057—Constructional details of force transmission elements, e.g. control wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
    • A61B2017/003—Steerable
    • A61B2017/00305—Constructional details of the flexible means
    • A61B2017/00314—Separate linked members
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
    • A61B2017/003—Steerable
    • A61B2017/00318—Steering mechanisms
    • A61B2017/00323—Cables or rods

Definitions

  • the leading or distal end of the endoscopic surgical instrument can be introduced into the body, for example into the stomach via the throat, with the physician then steering the tip of instrument.
  • the steering is typically achieved via four steering wires attached to wheels, levers, or other actuators on the handle of the instrument, which remains outside of the body.
  • the physician can steer the tip of the instrument in the up/down and left/right directions. This allows the physician to position surgical tools as desired.
  • the distal end of the instrument advantageously can bend into a tight radius, via control of the actuators on the handle.
  • the bending radius is limited by certain factors.
  • One factor is that the pivoting links that make up the skeleton or frame of the instrument can only pivot to limited angle relative to each other.
  • Another factor is that the left/right and up/down steering movements are not entirely independent. Specifically, when the distal end of the instrument is steering to it maximum left or right steering position, the ability to also steer in the up or down direction becomes very limited, and vice versa. As a result, operating the instrument to position the instrument tip as desired can become difficult.
  • an endoluminal surgical instrument has first and second steering controls on a handle.
  • a flexible shaft attached to the handle has a distal steerable end including a first link and a second link separated by a plurality of intermediate links.
  • First and second steering elements such as pairs of steering wires, are linked to first and second steering controls and to the first and second links.
  • One or more of the links is pivotable through an angle of at least 30 degrees relative to an adjoining link. The set back position of the second steering elements and the pivoting capability of the links allows the steerable end to be steered into a small bend radius. This makes the instrument highly maneuverable for use in endoluminal surgery, such as incision-less surgery of the stomach.
  • FIG. 1 is a back, top, and right side perspective view of an endoscopic system.
  • FIG. 2 is a front, top, and left side perspective view of the shapelock assembly shown in Fig. 1 .
  • FIG. 3 is a schematically illustrated side view of the distal end of the endoscopic system shown in FIG. 1 .
  • FIG. 4 is an enlarged schematically illustrated side view of the tip of the instrument shown in FIG. 3.
  • FIG. 5 is a schematically illustrated section views taken along line 5-5 of FIG 3.
  • FIGS. 6 and 7 are cross-sectional views of the endoscopic system of FIGS. 1 -5.
  • Fig. 8 is a side view of the distal end of a tight bend radius instrument, with the sheath or outer covering removed for purpose of illustration.
  • Fig. 9 is a side view of the instrument shown in Fig. 8 steered into a near maximum up position.
  • an endoscopic system 30 includes a reusable shapelock assembly 34 that is adapted for use within a disposable assembly generally designated 32.
  • the disposable assembly 32 has a flexible sheath 38 attached to a relatively rigid handle 36.
  • the sheath 38 includes a tip 58 attached to the distal end of a steerable section 42.
  • a body section 40 of the sheath 38 extends proximally from the steerable section 42 to the handle 36.
  • a lock nut or similar attachment holds the proximal end of the body section 40 of the sheath 38 onto the handle 36.
  • the sheath tip 58 has one or more tool lumen openings 60.
  • a plurality of tool lumens extend through the interior of the sheath 38.
  • the tool lumens are defined by one or more structural guideway members provided within the interior of the sheath 38.
  • the tool lumens are defined by a plurality of sleeves or tubes 44 and 46, each having an open distal end that is sealed around a respective lumen opening 60 in the tip 58.
  • the tubes 44 and 46 extend back from the tip 58 through the length of the sheath 38 to the handle 36.
  • the tubes may be flexible rubber or plastic tubes that act as guideways between the handle 36 and the tip 58 for tools and instruments.
  • the tubes may alternatively be flexible tubes having a composite construction, such as a multi-layer extrusion, or coil and/or braid reinforced construction.
  • the tubes may be constructed to reduce or eliminate the likelihood that the tubes will become twisted, kinked, tangled, torn, or to prevent the lumens of the tubes from collapsing under vacuum.
  • the steerable section 42 at the distal end of the sheath 38 may be formed by segments, links, or other generally rigid and pivotably interconnected elements.
  • the steerable section 42 includes links, with the first link shown at 74 and the second link at 76.
  • the length and flexibility of the steerable section 42 is varied by selecting the number and size of the individual links making up the steerable section 42.
  • a first pair of steering wires 80A or other steering elements are attached onto opposite sides of the first link 74 at attachment points 83.
  • the first link 74 is the front or leading link which the tip 58 attached to.
  • a second pair of steering wires 80B are attached to opposite sides of a second or proximal link 75 at attachment points 81 .
  • the proximal link 75 is spaced 4-30, 8-24 or 12-20 cm behind the first link 74, with several intervening links 77 between the first link 74 and the proximal link, for steering the steerable section 42.
  • the steering wires 80A and 80B extend back from the first link 74 and the proximal link 75 and subsequent proximal links of the steering section 42, through the sheath 38 to the handle 36.
  • the subsequent proximal links i.e., links between the handle and the proximal link 75 may be omitted and replaced with a tubular structure not having any links.
  • the links are pivotally attached to each, with alternating angular positions, i.e., with even links pivotable in the up/down direction and with odd links pivotable in the left/right direction.
  • the links are designed to allow at least 30, 35, 40, 45, or more degrees of pivot movement or angular rotation between adjoining links.
  • the attachment of the second steering wires 80B onto the proximal link spaced behind the first link 74, and the pivoting capability of the links allows the steerable end to be steered into a small bend radius. This makes the instrument highly maneuverable for use in endoluminal surgery.
  • the steering wires may be provided within coils 82 or other column strength element.
  • the coils 82 if used, allow the steering wires to be tensioned without buckling the sheath 38.
  • the steering section may be about 4-10 cm long, whereas the sheath 38 is typically between 20-200 cm.
  • the sheath 38 has an outer skin or layer 206 formed of a material such as a polymeric or plastic material that is flexible and that provides a protective layer to prevent passage ingress of bodily fluids.
  • the cylindrical proximal end 72 of the tip 58 is sealed onto the outer skin 206 via an adhesive or other bonding or attachment method.
  • the tip 58 may be removably attached to the distal end of the sheath 38, such as by screwing, friction fit, or other mechanism adapted to provide the user with the ability to exchange tips for various procedures.
  • the tip 58 may be made of hard or soft plastic or rubber, or similar non-porous materials.
  • passageways 212 for the steering wires may be provided within the walls of the sheath 38.
  • Each passageway 212 may be located within the skin material, between first and second layers of braid or reinforcement material.
  • the passageways 212 may be formed in straight or spiral, radially spaced alignment extending over the length of the sheath 38.
  • Fig. 2 shows a locking handle 172 that opens at its distal end.
  • the shape lock body 150 is formed by segments, such as links that are pivotably attached to (or positioned next to) each other in a nested arrangement.
  • the links may be formed as nested rings, so that the shapelock body 150 is tubular, or has an open internal through passageway.
  • the steering wires 80A exit from the passageways 212, run inside of the steerable section 42, and attach to the first link 74 of the steerable section 42.
  • the other pair of steering wires 80B attach to the proximal link 75 spaced proximally apart from the first link.
  • the steering wires are contained within the passageways 212 and extend to the handle 36, where the steering wires 80 are operably connected to the control knobs 140 and 144. Consequently, the shape lock 34 may be inserted into the central sheath opening 220 without contacting or interfering with the steering wires.
  • the sheath 38 may have a composite construction, including an outer layer 322, a body member 324, and an inner layer 326.
  • the composite construction provides the shaft with improved strength, flexibility, and torque transmission capability over conventional endoscopic shaft constructions.
  • the outer layer 322 and inner layer 326 may each include one, two, three, or more layers of a braided or woven mesh reinforcement material, such as polyethylene terephthalate (PET), nylon, metal or metallic fibers, or other suitable reinforcement material.
  • PET polyethylene terephthalate
  • the braided or woven mesh reinforcement layers are preferably porous, thereby providing the ability for a bonding material to penetrate the reinforcement layers.
  • FIGS. 6 and 7 also show the tubes 44 and 46, as well as two additional tubes 48 and 50, which may optionally also be included within the sheath 38.
  • the tubes 44 and 46 may be larger diameter tubes having an ID of about 3 mm to about 9 mm, preferably about 6.3 mm, with tubes 48 and 50 having a smaller diameter tubes, with an ID of about 1 .5 mm to about 7 mm, preferably about 4 mm.
  • the outer diameter of the sheath 38 may preferably be in the range of about 10 mm to about 30 mm.
  • the steering wires 80 extend from the steering controls 140 and 144 on the handle 36 through the sheath 38 to the distal end of the shaft at links 74 and 75.
  • the steering wire coils 82 receive and retain the steering wires 80.
  • the steering wire coils 82 may be formed integrally with or embedded in the sheath structure. Alternatively, the steering wire coils 82, along with the tubes 44-50, may float within the inner lumen 220.

Abstract

L'invention concerne un instrument chirurgical endoluminal, qui a des première et seconde commandes d'orientation sur un manche. Une tige souple attachée au manche a une extrémité distale pouvant être orientée comprenant une première liaison et une seconde liaison séparées par une pluralité de liaisons intermédiaires. Des premiers et seconds éléments d'orientation, tels que des paires de fils d'orientation, sont reliés aux première et seconde commandes d'orientation et aux première et seconde liaisons. Une ou plusieurs des liaisons peuvent pivoter d'un angle d'au moins 30 degrés par rapport à une liaison adjacente. La position enfoncée des seconds éléments d'orientation à partir des premiers éléments d'orientation, et la capacité de pivotement des liaisons permettent à l'extrémité pouvant être orientée d'être orientée selon un petit rayon de courbure. Cela rend l'instrument hautement manœuvrable destiné à être utilisé en chirurgie endoluminale, telle qu'une chirurgie sans incision de l'estomac.
PCT/US2013/039672 2012-05-30 2013-05-06 Outil chirurgical endoluminal ayant une section d'orientation selon un petit rayon de courbure WO2013180904A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/483,371 US20120238952A1 (en) 2008-04-02 2012-05-30 Endoluminal surgical tool with small bend radius steering section
US13/483,371 2012-05-30

Publications (1)

Publication Number Publication Date
WO2013180904A1 true WO2013180904A1 (fr) 2013-12-05

Family

ID=49673814

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/039672 WO2013180904A1 (fr) 2012-05-30 2013-05-06 Outil chirurgical endoluminal ayant une section d'orientation selon un petit rayon de courbure

Country Status (1)

Country Link
WO (1) WO2013180904A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557780A (en) * 1967-04-20 1971-01-26 Olympus Optical Co Mechanism for controlling flexure of endoscope
US4873965A (en) * 1987-07-31 1989-10-17 Guido Danieli Flexible endoscope
US20040044270A1 (en) * 2002-05-30 2004-03-04 Barry James P. Articulating vertebrae with asymmetrical and variable radius of curvature
US20060111615A1 (en) * 2004-11-23 2006-05-25 Novare Surgical Systems, Inc. Articulating sheath for flexible instruments

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557780A (en) * 1967-04-20 1971-01-26 Olympus Optical Co Mechanism for controlling flexure of endoscope
US4873965A (en) * 1987-07-31 1989-10-17 Guido Danieli Flexible endoscope
US20040044270A1 (en) * 2002-05-30 2004-03-04 Barry James P. Articulating vertebrae with asymmetrical and variable radius of curvature
US20060111615A1 (en) * 2004-11-23 2006-05-25 Novare Surgical Systems, Inc. Articulating sheath for flexible instruments

Similar Documents

Publication Publication Date Title
US20120238952A1 (en) Endoluminal surgical tool with small bend radius steering section
CN108778387B (zh) 通过具有伸缩式管状部件的转向机构而具有多弯折半径的可转向导管
US9055864B2 (en) Endoscopic system with torque transmitting sheath
US20080262300A1 (en) Endoscopic system with disposable sheath
US10531787B2 (en) Steerable multilumen catheter shaft
US8206343B2 (en) Reinforced catheter with articulated distal tip
US20080262294A1 (en) Endoscopic system with disposable sheath
EP3490652B1 (fr) Tige de cathéter orientable à lumières multiples.
US10493240B2 (en) Steerable catheter handle
KR20230027067A (ko) 강성화 디바이스
US11793392B2 (en) External working channels
WO2013180904A1 (fr) Outil chirurgical endoluminal ayant une section d'orientation selon un petit rayon de courbure
JP7361260B2 (ja) 操作可能なカテーテルシステムの関節シャフト、カテーテル、および作製方法
US20220016349A1 (en) Cannulas having wall strengthening features, and related systems and methods
WO2018022406A1 (fr) Manche de cathéter orientable
WO2021019924A1 (fr) Cathéter
WO2021219179A1 (fr) Sous-ensemble tube d'insertion pour un endoscope

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13797398

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13797398

Country of ref document: EP

Kind code of ref document: A1