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Publication numberUS3039468 A
Publication typeGrant
Publication date19 Jun 1962
Filing date7 Jan 1959
Priority date7 Jan 1959
Publication numberUS 3039468 A, US 3039468A, US-A-3039468, US3039468 A, US3039468A
InventorsPrice Joseph L
Original AssigneePrice Joseph L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Trocar and method of treating bloat
US 3039468 A
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Description  (OCR text may contain errors)

June 19, 1962 Filed Jan. '7, 1959 J. L. PRICE I TROCAR AND METHOD OF TREATING BLOAT 2 Sheets-Sheet l L INVENTOR.

/ JOSEPH L. Race.

0 BY 4 43 '4, J, W,

ATTOPNEJ S June 19, 1962 J. L. PRICE 3,039,463

TROCAR AND METHOD OF TREATING BLOAT Filed Jan. 7, 1959 2 Sheets-Sheet 2 25 7 q 3 2 l2 )1 i U 2;

25 13 INVENTOR. JOSE/ b L.P//E

A 7' TORNEVS United States Patent ()fiice Patented June 19, 1962 3,039,468 TROCAR AND METHOD OF TREATING BLOAT Joseph L. Price, 390 Rosemary Lane, Residing, Calif. Filed Jan. 7, 1959, Ser. No. 785,355 4 Claims. (31. 128-347) This invention relates to an improved trocar that is primarily intended for treating bloat in animals to release the gas accumulated in the stomach or intestines.

Where bloat occurs in cattle, it is usually necessary to take prompt steps to release the gas accumulated in the stomach of the animal that is suffering, or the condition may prove to be fatal. Failure to relieve the condition by employment of ordinary expedients has heretofore resulted in recourse to the use of a trocar which punctures the skin and stomach Wall and permits escape of the gas through the cannula, or tube that encloses the puncturing mandrel. Usually this procedure is adopted as a last resort due to the fact that the affected animal will be lost if the treatment is not successful, and the scant hope exists that fatal infection will not follow the treatment.

The usual reason for the fatal infection likely to follow the use of the conventional trocar is that a certain amount of the contents of the stomach is exhausted with the gas, and when the cannula is withdrawn, some of this material enters the peritoneal cavity resulting in the fatal infection.

One of the objects of the present invention is the provision of a trocar provided with means for drawing the stomach wall and the skin, or peritoneum together around the cannula when the latter extends into the stomach and through the outer hide or skin, and in holding the peritoneum and stomach wall together until they have become so united that the cannula may be withdrawn without their separating, so that no infection can take place in the peritoneal cavity clue to the entry therein of infection producing impurities from the stomach or elsewhere.

Another object of the invention is the provision of an improved method of treating a bloaded condition that substantially eliminates the likelihood of infection where the hide and stomach walls are pierced in order to exhause the gas and to relieve said condition.

Other objects and advantages will appear in the description and in the drawings.

In the drawings:

FIG. 1 is an isometric view of the trocar that is illustrative of the invention.

FIG. 1a is a partial view of a cow showing the location where the trocar is usually used in treating bloat.

FIG. 2 is an isometric view of the cannula including the means thereon, in expanded position, that is used to engage the inner surface of the stomach wall when the latter is drawn into close engagement with the peritoneum, or inner lining of the skin.

FIG. 3 is an isometric view of the puncturing mandrel removed from the cannula.

FIG. 4 illustrates the initial step in the treatment of bloat, in which the trocar extends through the skin and stomach wall and across the peritoneal cavity. The trocar is partly in section and partly in elevation.

FIG. 5 is a further step in use of the trocar in the present method, in which the adjacent sides of the stomach wall and the skin are drawn together and the mandrel is still in the cannula. The trocar is partly in section and partly in elevation.

FIG. 6 is similar to FIG. 5 in which the mandrel is removed.

FIG. 7 is a part sectional and part elevational view of a modification of the invention that is shown in the other views, but broken in length.

In detail, the trocar herein illustrated comprises an outer, elongated, open-ended cylinder 1 (FIG. 4) having a collar 2 slidably supported thereon for movement axially of said cylinder and substantially from end to end of the latter. This collar 2 has a radially outwardly projecting annular flange 3 at one end thereof, and one axially facing side 4 of said collar (FIG. 1) is preferably slightly convex in cross sectional contour extending from the outer surface of the cylinder 1 to the outer edge of the flange in a direction away from the end of the cylinder toward which surface or side 4 faces. The outer edge 5 (FIG. 1) of the flange 3 is preferably relatively thin, but not of a cutting thinness or sharpness.

Collar 2 is provided with any suitable means for releasably looking or securing it to the cylinder 1. A set screw 6 having a finger engageable head for turning it is illustrated as one such means. It should be noted that collar 2 proects axially from the flange 3 in the form of a hub, and set screw 6 threadedly extends through such hub.

The end 7 of cylinder 1 that is nearest to the hub or collar 2 projects slightly radially outwardly of the portion of the cylinder that mounts collar 2, and is preferably exteriorly knurled (FIG. 5). Thus this end portion 7 functions as a stop to prevent the collar from sliding olf the cylinder 1.

The opposite end of the cylinder 1 is exteriorly threaded for an extension 8, that will later be described more in detail.

Telescopically slidable within cylinder 1 is an elongated cylindrical, open-ended tube 9.

This tube 9 is longer than the cylinder 1 and therefore projects axially therefrom at its opposite ends.

The inner end of the tube 9 is the end that projects from the exteriorly threaded end of the cylinder 1, while the opposite end of tube 9 will be designated the outer end.

The inner end of tube 9 is formed with a plurality of equally spaced openings 11 (FIG. 6). These openings are in an annular row extending circumferentially of the inner end of tube 9, and the side of each opening that is nearest the inner end of the tube is in the form of a bar 12 that is at said inner end. Each bar 12 extends substantially tangentially of the cylindrical inner surface of the tube 9, and is a pivot for pivotally supporting one end of an elongated finger 13. In the drawing four fingers 13 are shown.

Each of the fingers '13 is formed with a loop or partial loop at one end encircling each of the pivots or bars '12 so that said fingers can swing from positions extending axially of the tube 9 and outwardly of the latter (FIG. 4) to positions extending radially outwardly of the axis of said tube (FIG. 2).

The outer surfaces of fingers 13 are convex in direction transversely of the lengths of said fingers, and the convex curvature thereof is substantially the same as the cross sectional contour of the outer surface of tube 9. Also the outer surfaces of the fingers will be substantially aligned with the outer surface of the tube 3 when said fingers are in collapsed position extending axially of the tube 9 (FIG. 4).

The width of each finger 13 is greater than its thicknessso that a substantial outer convex surface is provided on the outer side of each finger for engagement with the inside of the stomach wall of an animal, as. will later be described in detail. Also fingers 13 are equally spaced around the inner end of tube 9.

The inner side of each finger 13 that is opposite to the above described convex outer surface, is adapted to face the axis of the tube 9 when the fingers are in collapsed position.

As best seen in FIG. 2 the inner side of each finger 13 is rabbeted along the longitudinally extending edges of each finger to form a central raised rib 15 extending longitudinally of each finger.

The outer ends of fingers 13 are undercut or transverse ly beveled on their inner sides to provide an inclined end surface 16 at the outer end that faces generally toward the axis of tube 9 when the fingers are in the collapsed position as seen in FIG. 4.

It should be noted that the outside diameter of the outer end portion of the tube 9 is slightly less than that of the remainder of the tube, thereby providing a slight shoulder at 18. The outer end portion of the cylinder 1 is of slightly reduced inside diameter where it slides on the outer end portion of the tube 9, and therefore it has a shoulder complementary to shoulder 18 that engages the latter to limit the movement of cylinder 1 in direction toward the inner end of fingers 13 or to limit the movement of the tube 9 in the reverse direction or toward the outer end of cylinder 1 (*FIG. 4).

Threadedly secured on the threaded inner end of cylinder 1 is a tubular extension 8. This extension is formed with an imperforate end portion 20 (FIG. 1) at its end that connects with the cylinder 1, which end portion is adapted to overlie the pivoted ends of fingers 13 when the latter are in col-lapsed position and when shoulder 18 is in engagement with the complementarily formed shoulder on the cylinder 1.

This extension 19 is formed with axially elongated openings 2.1 that correspond in positions with the positions of fingers K13 and the beveled outer ends of the fingers partially extend over the complementarily beveled outer end surfaces 22 (FIGS. 1, 4) of the outer ends of openings 21. Thus the tube 9 is held by fingers 13 against rotation relative to the cylinder 1 and its extension 19, and the fingers 13 will lie spaced within the confines of the outer cylindrical surface of the extension 8. However, if the tube 9 is moved inwardly relative to the cylinder 1, the fingers will slide over the slanted end surfaces 22 to the radially extending positions seen in FIG. and will be held in this position against the material of the extension 8 at the inner ends of openings 21. The outer end of the cylinder 1 carries a set screw 23 that is adapted to releasably lock the cylinder 1 relative to tube 9 when the fingers 13 are in expanded position as seen in FIG. 5.

At this point it should be noted that the inside diameter of the extension 8 is approximately that of the inside diameter of tube 9.

Telescopically extending through the tube 9 and extension 19 is a puncturing mandrel 24 (FIGS. 3, 4). This mandrel has a sharply pointed inner end portion 25 that projects from the extension 19, and the outer surface of the extension 19 extending from openings 21 are slanted at a relatively slight angle with respect to the axis of the extension so as to be substantially a continuation of the inclined surfaces of the mandrel that define the sides of the pointed end portion 25 thereof. The degree to which mandrel 24 may project from the extension 8 may be manually regulated.

The terminating inner end of the extension 8 meets the mandrel in a relatively sharp end edge so that the mandrel and the extension coact to form a pointed end on the trocar.

The sides of the mandrel are formed with grooves 26 extending longitudinally thereof in which the ribs on the fingers 13 are adapted to be received and to fit when the fingers are in collapsed position. The outer end of the mandrel is provided with an end piece 27 adapted to be grasped by the hand and to also fit the palm of the hand for pushing the trocar and the mandrel.

The outer end of the tube 9 is provided with collar 28 4 that is recessed at its outer end to receive the hub 29 of the end piece 27 on the mandrel (FIG. 4).

In FIG. 1a the trocar is generally designated 36 in the approximate position on an animal 31 where it would be used to relieve a bloated condition.

In operation, the trocar may be initially in the condition seen in FIG. 1 in which the set screws 6 and 23 are tight with the fingers 13 collapsed within the extension 8 and the hub 29 seated in collar 28 that is on tube 9. The pointed end of the trocar is then thrust into the animal 31 passing through the skin 32 and stomach wall 33 (FIG. 4). The fingers *13 will be carried on the trocar into the stomach in collapsed position as seen in FIG. 1.

The next step would be to loosen the nut 23 that locks cylinder 1 and tube 9 together, and by firmly gripping the enlargement 7 on cylinder -1 and holding it, and urging the tube 9 inwardly or in a direction into the stomach, the fingers 13 will automatically spread to expanded position within the somach as shown in FIG. 2. After the fingers are so expanded, the tube 9 is again locked or secured to cylinder 1 so there can be no relative movement between them, and the collar or hub carrying flange 3 is forced against the outer surface of the skin 32 while the tube 9 and cylinder 1 may be pulled outwardly so that the skin 32 and stomach wall 33 are tight together, at which point the set screw 6 is tigtened and the mandrel 24 is completely withdrawn from the device (FIGS. 2, 6) thereby permitting the gas to escape. Obviously the mandrel may be employed in the event the bore in the device should become obstructed for any reason.

It will be seen from FIG. 6 that the cannula with the present device comprises the extension 8 and the cylinder 1. Since the skin and stomach wall or in some instances a wall of the intestine, are tightly sealed around the cannula, no infection can occur in the peritoneal cavity from material discharged from the somach.

The device as shown in FIG. 6 may be left in place for a sufiicient time to enable the walls 32, 33 to become permanently adhered, which occurs in a relatively short time. If desired, of course, the bore in the cannula may be closed by any suitable means.

Once the walls 32, 33 have become permanently adhered to each other, the device may be removed, and within a relatively short time thereafter the opening made by the device will close and heal.

The removal of the device of FIG. 6 is accomplished by loosening the set screw 23 and moving the tube 9 outwardly so that the fingers 13 will swing inwardly to collapsed position. It is obvious that the mandrel 24 may be inserted before collapse of the fingers if so desired, but the latter will move to collapsed position whether or not the mandrel is in the device.

The fact that the face 4 of the flange 3 is convex and terminates in a relatively thin outer peripheral edge is desirable in eifecting a tight seal between the skin and the stomach wall at the outer side of the cannula or extension 8. If the surface 4 were flat, the seal would be less effective around the device because of the large area of equal pressure, instead of the greatest pressure being localized around the cannula.

It is to be understood that various modifications may be made in the trocar without departing from the spirit of the invention. In its broadest aspect, the present trocar provides means for pressing the peritoneum and stomach walls together around an enclosed passageway that communicates between the interior of the stomach or intestine and the atmosphere, thereby enabling gas within the stomach or intestine, together with solids, to be discharged into the atmosphere free from contaminating the peritoneal cavity. The use of the term stomach and stomach wall is intended to include any portion of the digestive tract, or other cavity in the body, where the device may be used to accomplish similar results, or to remove fluid of any kind from such cavity.

One of the modifications is shown in FIG. 7 in which the cannula is shown at 40 and the mandrel 41 having the end piece 42 at one end thereof slidably fits in the bore 43 of said cannula, the said bore being unbroken and continuous from end to end.

The pointed end 44 of the mandrel 41 projects from the end of the cannula that is to be thrust into the animal and the outer surface 45 of the cannula from which the pointed end 44 projects is tapered similarly to the surfaces forming the sides of said pointed end.

Adjacent to the end surface 45, the cannula is formed with an annular outwardly opening recess 46 that forms an air chamber, the outer side of which is closed by an elastic diaphragm 47 of rubber or the like. This rubber diaphragm when in collapsed position is preferably at least within the confines of the axially projected cylindrical contour of the outer surface of the cannula 40 so as not to project therefrom.

A duct 50 extends axially of the wall of the cannula to a point adjacent to the end thereof that is opposite to the pointed end of the device, and at said point it communicates with a conventional filling valve 51 having the usual releasable check valve therein to admit air under pressure into the duct 50 for passage to air chamber 46, and from which duct and air chamber the air may be released by manual manipulation of the valve. A conventional valve of the type used in tires and tubes would be suitable for valve 51.

Mounted on the cannula for movement axially thereof is a collar having a radially outwardly projecting flange 53 that is the same as flange 3 in FIG. 1 and that has a surface 54 adapted to engage the outer surface of the hide or skin of an animal, such as the skin 32 in FIG. 4. The collar may be moved axially along the cannula for securing firmly thereto in any desired position therealong by a set screw 55.

In operation, the device as shown in FIG. 7 is first thrust through the hide 32 and stomach wall 33 of an animal suffering from a bloated condition. Air is then pumped through valve 51 and duct 50 into air chamber 46 causing the diaphragm 47 to expand radially outwardly to the desired degree, such as to position 56 or to even a greater degree. The marginal portions of diaphragm 47 are firmly vulcanized to the metal of the cannula, hence there will be no leakage, and the pump or other source of air under pressure can be detached from valve 51 with the diaphragm retained in its expanded position.

The collar 53 is then moved to firmly engage the outer surface of the skin at the same time as the diaphragm 47 firmly engages and seals off the opening caused by the cannula and the walls of the skin and stomach may be drawn together in the same manner as indicated in FIG. 5.

The mandrel is then withdrawn and the gas and other material in the stomach is expelled through the bore 43 Without danger of entering the peritoneal cavity.

The diaphragm may be deflated when the skin and stomach walls are attached, and the cannula Withdrawn, leaving the opening to close and heal as it will quickly do.

I claim:

1. A trocar including an elongated cannula and a mandrel removably supported therein coaxial with the longitudinal axis of said cannula, said trocar being adapted for insertion, longitudinally thereof, through the skin of an animal and through the enclosing wall of an internal cavity within such animal to a position with the opposite end portions of said cannula respectively projecting outwardly of said skin and into said cavity, expandable means carried by said trocar at the end portion of said cannula that is adapted to extend into said cavity movable from a collapsed position substantially disposed within the confines of the outer cross sectional outline of said end portion to an expanded position projecting radially outwardly of said cannula, a manually manipulatable means connected with said expandable means and projecting outwardly of the end portion of said cannula that is adapted to project outwardly of said skin for grasping by the fingers of a hand for moving said expandable means from said expanded position to said collapsed position when said expandable means is in said cavity, a collar supported on said last-mentioned end portion of said cannula for movement therealong axially thereof and a radially outwardly projecting flange rigid with said collar, means on said collar for securing the latter rigid with said cannula at any desired point along the latter, said flange being adapted to engage said skin for holding said skin and said enclosing wall together when said collar is moved toward said expandable means and when the latter is expanded within said internal cavity.

2. A trocar comprising an elongated cannula and a mandrel removably supported therein coaxial with the longitudinal axis of said cannula, said cannula comprising an outer cylinder having an inner end portion and an outer end portion and a tube telescopically supported within said cylinder having an outer end portion projecting outwardly of the outer end portion of said cylinder and an inher end portion terminating within the inner end portion of said cylinder, said mandrel projecting at one end from the said outer end portion of said tube and projecting at the other end thereof from the inner end portion of said cylinder, a collar mounted on said cylinder for movement axially thereof having a radially outwardly projecting flange rigid therewith, and means on said collar for rigidly securing it on said cylinder at any desired point along the latter, said mandrel being sli-dable longitudinally of said tube and cylinder out of the projecting end portion of said tube, and the outer sides of said other end of said mandrel being slanted to a point on its axis, the outer sides of said cylinder at the inner end thereof from which said mandrel projects being slanted similar to the slanted sides of said other end of said mandrel to facilitate thrusting said mandrel and cylinder through the skin and the stomach wall of an animal to a position with said skin in engagement with said flange and with said inner end portions of said cylinder and said tube within said stomach, and means on said inner end portion of siad tube swingable from a collapsed position within the confines of the outer outline of said cylinder to an expanded position projecting radially outwardly of said cylinder for engagement with the inner surface of said stomach wall, said inner end portion of said cylinder being formed with openings through which said fingers are adapted to move to said expanded position, said fingers being movable from said collapsed position to said expanded position upon moving said tube axially thereof relative to said cylinder in one direction and said fingers being movable from said expanded position to said collapsed position upon moving said tube axially relative to said cylinder in an opposite direction, means for releasably securing said cylinder and said tube rigidly together at one end or the other of said relative movement.

3. A trocar comprising: an elongated tubular cannula; a mandrel extending through said cannula projecting from opposite ends thereof; one projecting end of said mandrel at one end of said cannula having tapered sides terminating in a sharp point and a handle on the other projecting end of said mandrel for manual engagement for forcing the pointed end of said mandrel, in succession, through the skin of an animal and through a wall of its stomach forming openings therein; said mandrel being supported Within said cannula for withdrawal from the end of the latter that is adjacent to said handle; the outer surface of said cannula being cylindrical and substantially in continuation of said tapered sides whereby said skin and stomach wall will successively slide onto said outer surface with the edges of said openings in close sealing relation thereto upon continued movement of said mandrel and cannula into the animal after penetration of said skin and wall by said pointed end; wall engaging means on said cannula adjacent to its pointed end expandable radially outwardly thereof for engagement with the inner side of said stomach Wall after said means is moved to a position inside said stomach; means accessible to the hand of an operator at a point adjacent to said handle and connected with said wall engaging means for effecting said expansion of said wall engaging means; skin engaging means supported on said cannula at the end thereof adjacent to said handle for free movement toward said wall engaging means difierent distances sufiicient to tightly urge said skin and stomach Wall together in face to face relation when said stomach wall is against said wall engaging means and the latter is in expanded position, means for securing skin engaging means rigid with said cannula at any of said distances, and said mandrel being removable from said cannula from the end of the latter adjacent to said handle.

4. The method of treating an animal for bloat that comprises the steps of; forming a pair of substantially aligned openings in the outer skin and stomach wall of an animal, in succession and positioning a conduit in said openings extending from one to the other, in full sealing relation to the edges thereof as each opening is formed to preclude material from Within the stomach entering the cavity between said outer skin and said stomach wall; then drawing said skin and the wall of said stomach around said respective openings in tight engagement with each other, then opening said conduit to discharge of material within said stomach through said conduit.

References Cited in the file of this patent UNITED STATES PATENTS 1,213,001 Philips Jan. 16, 1917 1,434,964 Rose Nov. 7, 1922 1,863,057 Innes June 14, 1932 2,638,901 Sugarbaker May 19, 1953 2,779,335 Hausser Ian. 29, 1957 2,799,273 Oddo July 16, 1957 FOREIGN PATENTS 11,277 Great Britain 1907 179,842 Austria Oct. 11, 1954 748,666 France July 7, 1933

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1213001 *2 May 191616 Jan 1917Ralph S PhilipsTherapeutic apparatus.
US1434964 *20 Mar 19187 Nov 1922Dilator Syringe CorpDouche nozzle
US1863057 *3 Mar 193014 Jun 1932Innes George ASurgical drain
US2638901 *30 Jul 195119 May 1953Sugarbaker Everett DSurgical clamp
US2779335 *13 May 195529 Jan 1957Hausser Will NSelf-retaining cattle trocar
US2799273 *22 Mar 195516 Jul 1957Vincent J OddoHaemostatic catheter
AT179842B * Title not available
FR748666A * Title not available
GB190711277A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3127894 *26 Sep 19607 Apr 1964Smith Gail BMethod of medicine administration and device therefor
US3216420 *27 Dec 19629 Nov 1965Marvin E ClaycombColostomy attachments
US3241554 *14 Aug 196322 Mar 1966Baxter Don IncPeritoneal dialysis entry device
US3253594 *30 Jul 196331 May 1966Frank E MatthewsPeritoneal cannula
US3496932 *22 Dec 196724 Feb 1970Gen Motors CorpMethod and apparatus for substernal cardiac massage
US3659607 *6 Apr 19702 May 1972Surgical Design CorpMethod for performing surgical procedures on the eye
US3717151 *11 Mar 197120 Feb 1973R CollettFlesh penetrating apparatus
US3833003 *5 Jul 19723 Sep 1974A TariccoIntravascular occluding catheter
US3856021 *1 Oct 197324 Dec 1974A McintoshDevice for treatment of bloat of ruminants
US3871368 *10 Oct 197318 Mar 1975Van Berkum Wilmer TDevice for fixation of preparturient vaginal prolapse
US3889658 *8 Apr 197417 Jun 1975Jay H NewhallVivo temperature sensing method and apparatus
US4030490 *14 Nov 197521 Jun 1977Vogel George NFemale protective device
US4083370 *3 Nov 197611 Apr 1978Taylor John DBloat relief tube and holder
US4311146 *8 May 198019 Jan 1982Sorenson Research Co., Inc.Detachable balloon catheter apparatus and method
US4364387 *18 Dec 198021 Dec 1982Abbott LaboratoriesConnecting device for medical liquid containers
US4395806 *12 Nov 19812 Aug 1983Sorenson Research Co., Inc.Method of manufacturing a detachable balloon catheter assembly
US4414974 *9 Jun 198115 Nov 1983General Conveyors LimitedMicrosurgical knife
US4491126 *6 Jul 19821 Jan 1985Wilbur D. SmithIn vivo monoclonal antibody production
US4654030 *24 Feb 198631 Mar 1987EndotherapeuticsTrocar
US4790329 *12 Jun 198713 Dec 1988Trustees Of Beth Israel HospitalAdjustable biopsy localization device
US4815467 *13 Mar 198728 Mar 1989Chestnut William JAcromioplasty guide pins
US4834707 *16 Sep 198730 May 1989Evans Phillip HVenting apparatus and method for cardiovascular pumping application
US4861334 *24 Jun 198829 Aug 1989Nawaz ArainSelf-retaining gastrostomy tube
US4986810 *1 Sep 198922 Jan 1991Neal SemradToggle catheter
US5002557 *6 Apr 198926 Mar 1991Hasson Harrith MLaparoscopic cannula
US5057082 *4 Nov 198815 Oct 1991Plastic Injectors, Inc.Trocar assembly
US5122122 *22 Nov 198916 Jun 1992Dexide, IncorporatedLocking trocar sleeve
US5176697 *28 Sep 19905 Jan 1993Hasson Harrith MLaparoscopic cannula
US5217441 *27 Mar 19928 Jun 1993United States Surgical CorporationTrocar guide tube positioning device
US5226890 *13 Nov 199113 Jul 1993United States Surgical CorporationTissue gripping device
US5232451 *25 Apr 19913 Aug 1993Dexide, Inc.Locking trocar sleeve
US5257975 *14 Aug 19922 Nov 1993Edward Weck IncorporatedTo hold an object to an opening in a body wall
US5263937 *11 Feb 199323 Nov 1993Shipp John ITrocar with profile to reduce insertion force
US5279564 *11 Sep 199218 Jan 1994Edward Weck IncorporatedTo hold an object to an opening in a body wall
US5295994 *15 Nov 199122 Mar 1994Bonutti Peter MActive cannulas
US5309896 *19 Nov 199110 May 1994Origin Medsystems, Inc.Retraction methods using endoscopic inflatable retraction devices
US5330497 *15 Dec 199219 Jul 1994Dexide, Inc.Locking trocar sleeve
US5330498 *17 Dec 199119 Jul 1994Hill John DBlood vessel occlusion trocar
US5330501 *3 Feb 199319 Jul 1994United States Surgical CorporationTissue gripping device for use with a cannula and a cannula incorporating the device
US5336206 *12 Apr 19939 Aug 1994United States Surgical CorporationTrocar penetration depth indicator and guide tube positioning device
US5354270 *22 Mar 199311 Oct 1994Wilk Peter JSurgical closure disk and balloon method
US5356421 *7 Oct 199218 Oct 1994United States Surgical CorporationSafety trocar with locking handles
US5368574 *1 Oct 199229 Nov 1994Ethicon, Inc.Percutaneous catheter introducer
US5370625 *13 Apr 19936 Dec 1994United States Surgical CorporationTrocar guide tube positioning device
US5375588 *17 Aug 199227 Dec 1994Yoon; InbaeMethod and apparatus for use in endoscopic procedures
US5387196 *19 May 19927 Feb 1995United States Surgical CorporationCannula assembly having conductive cannula
US5392787 *1 Oct 199328 Feb 1995Yoon; InbaeMultifunctional devices for use in endoscopic surgical procedures and methods therefor
US5402772 *13 Aug 19934 Apr 1995Origin Medsystems, Inc.Endoscopic expandable retraction device
US5407423 *25 Aug 199418 Apr 1995Yoon; InbaeMultifunctional devices for use in endoscopic surgical procedures and method therefor
US5439457 *1 Oct 19938 Aug 1995Yoon; InbaeMultifunctional devices for use in endoscopic surgical procedures and methods therefor
US5445615 *20 Dec 199329 Aug 1995Yoon; InbaeSurgical instrument stabilizer
US5450843 *14 Mar 199419 Sep 1995Origin Medsystems, Inc.To gain access to an adjacent tissue
US5451204 *14 Apr 199319 Sep 1995Yoon; InbaeMultifunctional devices for endoscopic surgical procedures
US5454367 *13 Aug 19933 Oct 1995Origin Medsystems, Inc.For retracting an organ inside the body
US5458579 *25 Nov 199217 Oct 1995Technalytics, Inc.Mechanical trocar insertion apparatus
US5465711 *13 Aug 199314 Nov 1995Origin Medsystems, Inc.Method for retracting the bowel
US5472429 *23 Feb 19955 Dec 1995Yoon; InbaeSurgical instrument stabilizer
US5484426 *1 Oct 199316 Jan 1996Yoon; InbaeMultifunctional devices for use in endoscopic surgical procedures and methods therefor
US5501653 *6 Dec 199326 Mar 1996Origin Medsystems, Inc.Abdominal wall lifting retractor with hinged cross-member
US5505689 *24 Oct 19949 Apr 1996Origin Medsystems, Inc.For lifting the abdominal wall for peritoneal retraction
US5514075 *18 Nov 19947 May 1996Origin Medsystems, Inc.For atrautomatically and proportionally lifting the abdominal wall
US5514085 *1 Oct 19937 May 1996Yoon; InbaeMultifunctional devices for use in endoscopic surgical procedures and methods therefor
US5520609 *18 May 199328 May 1996Origin Medsystems, Inc.Apparatus and method for peritoneal retraction
US5522790 *14 Mar 19944 Jun 1996Origin Medsystems, Inc.For retracting an organ inside the body to gain access to an adjacent tissue
US5527264 *8 Feb 199418 Jun 1996Origin Medsystem, Inc.For retracting an organ inside the body to provide access to treat tissue
US5531856 *13 Aug 19932 Jul 1996Origin Medsystems, Inc.Endoscopic inflatable retraction devices
US5538509 *31 Jan 199423 Jul 1996Richard-Allan Medical Industries, Inc.Trocar assembly
US5540648 *13 Jul 199430 Jul 1996Yoon; InbaeMedical instrument stabilizer with anchoring system and methods
US5562603 *5 Jun 19958 Oct 1996Origin Medsystems, Inc.Endoscopic inflatable retraction device with fluid-tight elastomeric window
US5569290 *30 Jan 199529 Oct 1996Paul C. McAfeeMethod of and apparatus for laparoscopic or endoscopic spinal surgery using an unsealed anteriorly inserted transparent trochar
US5599292 *25 Aug 19944 Feb 1997Yoon; InbaeMultifunctional devices for use in endoscopic surgical procedures and methods therefor
US5613950 *19 May 199325 Mar 1997Yoon; InbaeMultifunctional manipulating instrument for various surgical procedures
US5618309 *10 Nov 19948 Apr 1997Green; David T.Cannula assembly having conductive cannula
US5632761 *16 Mar 199527 May 1997Origin Medsystems, Inc.Inflatable devices for separating layers of tissue, and methods of using
US5634883 *26 May 19953 Jun 1997Origin Medsystems, Inc.For lifting the abdominal wall for peritoneal retraction
US5634935 *16 Jun 19953 Jun 1997Taheri; Syde A.For separating tissue using a balloon dissection instrument
US5643178 *26 May 19951 Jul 1997Origin Medsystems, Inc.Method for peritoneal retration
US5649902 *8 Mar 199522 Jul 1997Yoon; InbaeFor introduction into an anatomical cavity
US5653718 *16 May 19945 Aug 1997Yoon; InbaeCannula anchoring system
US5662674 *6 Jun 19952 Sep 1997Debbas; ElieApparatus for locating a breast mass
US5681341 *14 Mar 199528 Oct 1997Origin Medsystems, Inc.Flexible lifting apparatus
US5697946 *7 Oct 199416 Dec 1997Origin Medsystems, Inc.Method and apparatus for anchoring laparoscopic instruments
US5700239 *5 Jun 199623 Dec 1997Yoon; InbaeMultifunctional devices for use in endoscopic surgical procedures and method therefor
US5704372 *29 Jul 19946 Jan 1998Origin Medsystems, Inc.Method of providing access through the abdominal wall to repair a hernia
US5707362 *3 Apr 199513 Jan 1998Yoon; InbaePenetrating instrument having an expandable anchoring portion for triggering protrusion of a safety member and/or retraction of a penetrating member
US5716327 *25 Jun 199610 Feb 1998Origin Medsystems, Inc.Body wall retraction system for wide cavity retraction
US5722986 *24 Jul 19963 Mar 1998Origin Medsystems, Inc.Inflatable devices for separating layers of tissue, and methods of using
US5728119 *13 Oct 199517 Mar 1998Origin Medsystems, Inc.Method and inflatable chamber apparatus for separating layers of tissue
US5733252 *5 Feb 199631 Mar 1998Yoon; InbaeMultifunctional devices for the use in endoscopic surgical procedures and methods therefor
US5738629 *5 Jun 199514 Apr 1998Origin Medsystems, Inc.Self-retracting endoscope
US5743850 *24 Aug 199428 Apr 1998Origin Medsystems, Inc.Endoscopic inflatable retraction device with additional inflatable chamber
US5743851 *4 Jun 199628 Apr 1998Origin Medsystems, Inc.For retracting an organ inside the body to gain access to an adjacent tissue
US5779728 *5 Jan 199614 Jul 1998Origin Medsystems, Inc.Method and inflatable chamber apparatus for separating layers of tissue
US5782813 *19 Jun 199521 Jul 1998Yoon; InbaeSurgical instrument stabilizer
US5800394 *25 Jun 19971 Sep 1998Yoon; InbaeMethod of creating an operating space endoscopically at an obstructed site
US5803901 *13 Mar 19978 Sep 1998Origin Medsystems, Inc.Inflatable devices for separating layers of tissue and methods of using
US5823945 *5 Jun 199720 Oct 1998Origin Medsystems, Inc.For retracting an organ inside the body to gain access to adjacent tissue
US5823947 *25 Jun 199720 Oct 1998Yoon; InbaeMethod of creating an operating space endoscopically at an obstructed site
US5827215 *24 Sep 199327 Oct 1998Yoon; InbaePacking device for endoscopic procedures
US5836871 *10 Jun 199617 Nov 1998Origin Medsystems, Inc.Method for lifting a body wall using an inflatable lifting apparatus
US5855566 *1 Jun 19955 Jan 1999Urohealth, Inc. (California)Trocar assembly
US5857999 *5 May 199512 Jan 1999Imagyn Medical Technologies, Inc.Small diameter introducer for laparoscopic instruments
US5860997 *5 Jun 199519 Jan 1999General Surgical Innovations, Inc.Method of dissecting tissue layers
US5865728 *21 Nov 19952 Feb 1999Origin Medsystems, Inc.Method of using an endoscopic inflatable lifting apparatus to create an anatomic working space
US5865802 *13 Dec 19952 Feb 1999Yoon; InbaeExpandable multifunctional instruments for creating spaces at obstructed sites endoscopically
US5882340 *2 Jul 199716 Mar 1999Yoon; InbaePenetrating instrument having an expandable anchoring portion for triggering protrusion of a safety member and/or retraction of a penetrating member
US5925058 *18 Jun 199720 Jul 1999Origin Medsystems, Inc.Method and inflatable chamber apparatus for separating layers of tissue
US5935103 *18 Jul 199710 Aug 1999Heartport, Inc.Blood vessel occlusion device
US5941852 *1 Jun 199524 Aug 1999Imagyn Medical Technologies California, Inc.Cannula converter to convert the sealing diameter of a cannula
US5941894 *18 Jul 199724 Aug 1999Heartport, Inc.Blood vessel occlusion device
US5954739 *23 Jun 199721 Sep 1999General Surgical Innovations, Inc.Method of dissecting tissue layers
US5957888 *10 Oct 199528 Sep 1999United States Surgical CorporationSurgical cannula having a variable length
US5997505 *18 Jul 19977 Dec 1999Heartport, Inc.Method of cannulating an ascending aorta using a blood vessel occlusion device
US6042596 *25 Sep 199728 Mar 2000General Surgical Innovations, Inc.Method of performing balloon dissection
US6059734 *5 May 19989 May 2000Yoon; InbaeMethods of collecting tissue at obstructed anatomical sites
US6102928 *19 Jan 199915 Aug 2000General Surgical Innovations, Inc.Method of dissecting tissue layers
US6146401 *29 Jul 199814 Nov 2000Yoon; InbaeExpandable multifunctional instruments for creating spaces at obstructed sites endoscopically
US61870235 Jun 199513 Feb 2001General Surgical Innovations, Inc.Method of dissecting tissue layers
US622461917 Sep 19961 May 2001Heartport, Inc.Blood vessel occlusion trocar having size and shape varying insertion body
US624808824 Sep 199319 Jun 2001Inbae YoonMethods for performing endoscopic procedures
US627708931 Mar 199821 Aug 2001Inbae YoonMethod for ablating portions of the uterus
US627713618 Feb 199921 Aug 2001General Surgical Innovations, Inc.Method for developing an anatomic space
US6283948 *13 Jul 19994 Sep 2001Ethicon, Inc.Trocar obturator having grooved passageway
US632872927 Apr 199911 Dec 2001General Surgical Innovations, Inc.Colporrhaphy method and apparatus
US63582669 Oct 199619 Mar 2002General Surgical Innovations, Inc.Active cannulas
US636154318 Mar 199726 Mar 2002Sherwood Services AgInflatable devices for separating layers of tissue, and methods of using
US64510426 Jan 199917 Sep 2002General Surgical Innovations, Inc.Method and apparatus for dissecting tissue layers
US649768722 Jun 200024 Dec 2002Erblan Surgical Inc.Safety trocar with progressive cutting tip guards and gas jet tissue deflector
US652428323 May 199525 Feb 2003Sherwood Services AgMethod and apparatus for anchoring laparoscopic instruments
US656559017 Aug 200120 May 2003General Surgical Innovations, Inc.Apparatus and methods for developing an anatomic space
US66022185 Jun 20015 Aug 2003Inbae YoonApparatus for ablation of the endometrium of the uterus
US660503726 Oct 199812 Aug 2003Sherwood Services AgEndoscopic inflatable retraction device
US662018116 Mar 200016 Sep 2003General Surgical Innovations, Inc.Method of dissecting tissue layers
US667990013 Feb 200220 Jan 2004General Surgical Innovations, Inc.Apparatus and methods for developing an anatomic space for laparoscopic hernia repair and patch for use therewith
US669585613 Feb 200224 Feb 2004General Surgical Innovations, Inc.Apparatus and methods for developing an anatomic space for laparoscopic hernia repair and patch for use therewith
US675885313 Feb 20026 Jul 2004General Surgical Innovations, Inc.Apparatus and methods for developing an anatomic space for laparoscopic hernia repair and patch for use therewith
US686089228 May 19991 Mar 2005General Surgical Innovations, Inc.Specially shaped balloon device for use in surgery and method of use
US690845413 Feb 200321 Jun 2005Taut, Inc.Anchoring assembly for a medical instrument
US69534675 Apr 200211 Oct 2005General Surgical Innovations, Inc.Apparatus and method for developing an anatomic space for laparoscopic hernia repair and patch for use therewith
US698900331 Aug 200124 Jan 2006Conmed CorporationObturator and cannula for a trocar adapted for ease of insertion and removal
US716351017 Sep 200316 Jan 2007Applied Medical Resources CorporationSurgical instrument access device
US717927225 Feb 200420 Feb 2007General Surgical Innovations, Inc.Apparatus and method for dissecting tissue layers
US72142362 Jul 20048 May 2007General Surgical Innovations, Inc.Apparatus and methods for developing an anatomic space for laparoscopic hernia repair and patch for use therewith
US72172735 Dec 200315 May 2007General Surgical Innovations, Inc.Fluid operated retractors
US722646210 Jun 20045 Jun 2007General Surgical Innovations, Inc.Specially shaped balloon device for use in surgery and method of use
US723506425 Feb 200326 Jun 2007Sherwood Services AgMethod and apparatus for anchoring laparoscopic instruments
US72381541 Sep 20053 Jul 2007Applied Medical Resources CorporationWound retraction apparatus and method
US729715322 Aug 200520 Nov 2007General Surgical Innovations, Inc.Apparatus and method for developing an anatomic space for laparoscopic hernia repair and patch for use therewith
US730039924 Nov 200427 Nov 2007Atropos LimitedSurgical device for retracting and/or sealing an incision
US73004486 Oct 200327 Nov 2007Tyco Healthcare Group LpBalloon dissector with cannula
US73117198 Apr 200325 Dec 2007General Surgical Innovations, Inc.Active cannulas
US737789830 May 200727 May 2008Applied Medical Resources CorporationWound retraction apparatus and method
US747322121 Sep 20016 Jan 2009Applied Medical Resources CorporationSurgical access apparatus and method
US74817655 Oct 200527 Jan 2009Applied Medical Resources CorporationSurgical access apparatus and method
US75408396 Aug 20032 Jun 2009Atropos LimitedWound retractor
US75598936 Oct 200314 Jul 2009Atropos LimitedWound retractor device
US76508873 Jun 200326 Jan 2010Applied Medical Resources CorporationWound retractor
US769548724 Apr 200313 Apr 2010General Surgical Innovations, Inc.Balloon dissection apparatus
US770420712 Oct 200627 Apr 2010Applied Medical Resources CorporationCircular surgical retractor
US772714612 Oct 20061 Jun 2010Applied Medical ResourcesWound retractor with gel cap
US773630612 Oct 200615 Jun 2010Applied Medical Resources CorporationHand access laparoscopic device
US774461719 Mar 200329 Jun 2010Covidien AgMethod and inflatable chamber apparatus for separating layers of tissue
US774941512 Oct 20066 Jul 2010Applied Medical Resources CorporationMethod of making a hand access laparoscopic device
US776682311 Aug 20033 Aug 2010Covidien AgEndoscopic inflatable retraction device, method of using, and method of making
US781556712 Oct 200619 Oct 2010Applied Medical Resources, CorporationSplit hoop wound retractor
US786716422 Sep 200311 Jan 2011Atropos LimitedWound retractor system
US787897415 Jun 20101 Feb 2011Applied Medical Resources CorporationHand access laparoscopic device
US78834611 Jun 20108 Feb 2011Applied Medical ResourcesWound retractor with gel cap
US789217227 Apr 201022 Feb 2011Applied Medical Resources CorporationCircular surgical retractor
US790976012 Oct 200622 Mar 2011Applied Medical Resources CorporationSplit hoop wound retractor with gel pad
US791369725 Jan 201029 Mar 2011Applied Medical Resources CorporationWound retractor
US7931658 *18 Mar 200526 Apr 2011Interrad Medical, Inc.Temporary retention device
US793512722 Nov 20063 May 2011Interrad Medical, Inc.Temporary retention device
US79510767 Oct 200531 May 2011Applied Medical Resources CorporationSurgical access system
US796397510 May 200421 Jun 2011Tyco Healthcare Group LpBalloon dissector with balloon tip cannula
US80167553 Dec 201013 Sep 2011Applied Medical Resources CorporationSurgical access apparatus and method
US80167949 Mar 200613 Sep 2011Interrad Medical, Inc.Anchor device and method
US80168133 Sep 200913 Sep 2011Interrad Medical, Inc.Anchor device and method
US802129614 Jul 200620 Sep 2011Atropos LimitedWound retractor
US803865316 Jul 200818 Oct 2011Interrad Medical, Inc.Anchor systems and methods
US806667321 Mar 200629 Nov 2011Applied Medical Resources CorporationCannula stabilization seal
US806668911 Jul 200729 Nov 2011Apollo Endosurgery, Inc.Methods and systems for submucosal implantation of a device for diagnosis and treatment with a therapeutic agent
US80706763 Dec 20106 Dec 2011Applied Medical Resources CorporationSurgical access apparatus and method
US810523427 Jan 200931 Jan 2012Applied Medical Resources CorporationSurgical access apparatus and method
US810987312 May 20087 Feb 2012Applied Medical Resources CorporationSurgical retractor with gel pad
US812859211 Jul 20076 Mar 2012Apollo Endosurgery, Inc.Methods and systems for performing submucosal medical procedures
US814745313 Mar 20063 Apr 2012Applied Medical Resources CorporationBalloon trocar
US81578351 Jun 201017 Apr 2012Applied Medical Resouces CorporationAccess sealing apparatus and method
US817286912 Apr 20108 May 2012Tyco Healthcare Group LpBalloon dissection apparatus
US818717729 Nov 200629 May 2012Applied Medical Resources CorporationSurgical instrument access device
US81871785 Jun 200829 May 2012Atropos LimitedInstrument access device
US818729622 Oct 200729 May 2012Tyco Healthcare Group LpApparatus and method for developing an anatomic space for laparoscopic hernia repair and patch for use therewith
US822655212 May 200824 Jul 2012Applied Medical Resources CorporationSurgical retractor
US823505422 Feb 20117 Aug 2012Applied Medical Resources CorporationWound retractor
US82413302 Nov 200714 Aug 2012Lanx, Inc.Spinous process implants and associated methods
US825200425 Mar 201128 Aug 2012Interrad Medical, Inc.Temporary retention device
US826256813 Oct 200911 Sep 2012Applied Medical Resources CorporationSingle port access system
US826785818 Jan 201118 Sep 2012Applied Medical Resources CorporationWound retractor with gel cap
US828266522 Oct 20079 Oct 2012Tyco Healthcare Group LpApparatus and method for dissecting tissue layers
US82875038 Mar 200716 Oct 2012Applied Medical Resources CorporationBalloon trocar
US8298185 *14 Sep 201030 Oct 2012Suremka Medical, LlcRetractable cannula for surgical procedures
US830863917 Mar 201113 Nov 2012Applied Medical Resources CorporationSplit hoop wound retractor with gel pad
US831343115 Oct 201020 Nov 2012Applied Medical Resources CorporationSplit hoop wound retractor
US831769120 Apr 200927 Nov 2012Atropos LimitedWound retractor device
US831777115 Jan 201027 Nov 2012Apollo Endosurgery, Inc.Methods and systems for performing submucosal medical procedures
US83287646 Feb 200911 Dec 2012Interrad Medical, Inc.System for anchoring medical devices
US83288377 Dec 200511 Dec 2012Xlumena, Inc.Method and apparatus for performing needle guided interventions
US832883917 May 201111 Dec 2012Covidien LpBalloon dissector with balloon tip cannula
US834304722 Jan 20091 Jan 2013Applied Medical Resources CorporationSurgical instrument access device
US834310829 Sep 20101 Jan 2013Interrad Medical, Inc.Systems and methods for anchoring medical devices
US83570863 May 201222 Jan 2013Applied Medical Resources CorporationSurgical instrument access device
US83571933 May 201022 Jan 2013Xlumena, Inc.Apparatus and method for deploying stent across adjacent tissue layers
US8360969 *28 Mar 200829 Jan 2013Frantz Medical Development, Ltd.Securable cannula and method
US83759555 Feb 201019 Feb 2013Atropos LimitedSurgical procedure
US83827073 Mar 200926 Feb 2013Applied Medical Resources CorporationBalloon trocar advanced fixation
US838852623 Apr 20085 Mar 2013Applied Medical Resources CorporationWound retraction apparatus and method
US84144878 Feb 20119 Apr 2013Applied Medical Resources CorporationCircular surgical retractor
US84255394 Oct 200723 Apr 2013Xlumena, Inc.Luminal structure anchoring devices and methods
US84446038 Sep 201121 May 2013Interrad Medical, Inc.Anchor systems and methods
US845463221 Apr 20094 Jun 2013Xlumena, Inc.Tissue anchor for securing tissue layers
US84546455 Oct 20074 Jun 2013Covidien LpBalloon dissector with cannula
US848057528 Aug 20129 Jul 2013Applied Medical Resources CorporationSingle port access system
US849147223 Nov 201123 Jul 2013Apollo Endosurgery, Inc.Methods and systems for submucosal implantation of a device for diagnosis and treatment with a therapeutic agent
US849658115 Mar 201230 Jul 2013Applied Medical Resources CorporationSurgical access apparatus and method
US854074517 Dec 201224 Sep 2013Covidien LpBalloon dissector with cannula
US857986410 Jan 201312 Nov 2013Interrad Medical, Inc.Anchor systems and methods
US861719610 Dec 201231 Dec 2013Xlumena, Inc.Method and apparatus for performing needle guided interventions
US864726514 Jan 201111 Feb 2014Applied Medical Resources CorporationHand access laparoscopic device
US865774027 Jan 201025 Feb 2014Atropos LimitedInstrument access device
US865774115 Aug 201125 Feb 2014Atropos LimitedWound retractor
US867283913 Sep 201118 Mar 2014Applied Medical Resource CorporationSurgical access apparatus and method
US870303423 Aug 201122 Apr 2014Applied Medical Resources CorporationMethod of making a tack-free gel
US871529518 Jul 20126 May 2014Interrad Medical, Inc.Temporary retention device
US872153727 Jun 201313 May 2014Applied Medical Resources CorporationSingle port access system
US873433623 Apr 200927 May 2014Atropos LimitedWound retractor device
US874078519 Oct 20103 Jun 2014Atropos LimitedWound retractor system
US874743910 Jul 200610 Jun 2014P Tech, LlcMethod of using ultrasonic vibration to secure body tissue with fastening element
US87582369 May 201224 Jun 2014Applied Medical Resources CorporationWound retractor
US877123217 Aug 20118 Jul 2014Interrad Medical, Inc.Anchor device and method
US8777902 *25 Sep 201215 Jul 2014Suremka, LlcRetractable cannula for surgical procedures
US877796714 Dec 200615 Jul 2014Xlumena, Inc.Methods and devices for anchoring to tissue
US87844378 Jun 200622 Jul 2014Xlumena, Inc.Methods and devices for endosonography-guided fundoplexy
US88083293 Apr 201219 Aug 2014Bonutti Skeletal Innovations LlcApparatus and method for securing a portion of a body
US20110306841 *19 Jan 201015 Dec 2011Lozman Philip RSurgical Retention Port and Method of Use
US20120065589 *14 Sep 201015 Mar 2012Worrel Daniel ARetractable Cannula for Surgical Procedures
US20120130417 *31 Jan 201224 May 2012Keke LepuluApparatus and method for penetrating and enlarging adjacent tissue layers
US20130023733 *25 Sep 201224 Jan 2013Worrel Daniel ARetractable Cannula for Surgical Procedures
USRE34021 *13 Nov 19894 Aug 1992Abbott LaboratoriesPercutaneous fixation of hollow organs
EP0432363A2 *10 Aug 199019 Jun 1991Dexide, Inc.Locking trocar sleeve
EP0487175A1 *18 Mar 199127 May 1992Thomas A. CastillentiLaparoscopic trocar with self-locking port sleeve
WO1992010141A1 *22 Nov 199125 Jun 1992Adair Edwin LloydTrochar system for laparoscopy
WO1994017845A1 *4 Feb 199418 Aug 1994Life Surgery IncTrocar with profile to reduce insertion force
WO1995002367A1 *15 Jul 199426 Jan 1995Aws Shakir Mustafa SalimPercutaneous sigmoid colon volvulus deflation device
WO1995002368A1 *15 Jul 199426 Jan 1995Aws Shakir Mustafa SalimPercutaneous colostomy catheter
WO1996033752A2 *18 Apr 199631 Oct 1996Inbae YoonRetractable safety penetrating instrument with laterally extendable spring strip
Classifications
U.S. Classification604/540, 606/185, 604/107, 604/96.1
International ClassificationA61D1/14, A61D1/00
Cooperative ClassificationA61D1/14
European ClassificationA61D1/14