Surgical instrument for establishing compression anastomosis

• US 4,907,591 A
• Filed: 03/29/1988
• Issued: 03/13/1990
• Est. Priority Date: 03/29/1988
• Status: Expired due to Fees

• Current Assignee: Carlo Rebuffat, Riccardo Rosati
• Original Assignee: Pfizer Hospital Products Group, Inc. (Pfizer Inc.)
• Inventors: Vasconcellos, Alfred V., Cummings, Joel W., Teodorescu, Ionel E., McBeth, Dean E.
• Primary Examiner(s): Coven, Edward M.
• Assistant Examiner(s): Jackson, Gary
• Application Number:
  US07/174,570
• Time in Patent Office: 714 Days
• Field of Search: 128/334 R, 128/335, 128/305, 227/19, 227/DIG. 1
• US Class Current: 606/154
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples

Abstract

A surgical instrument for installing a plurality of interlocking coupling members forming a compression anastomosis assembly, particularly suitable for use in achieving anastomosis of a resected tubular organ, with the instrument having a cutting portion designed and configured for rotational movement as the cutter advances to perform its intended functions of severing tissue and at least a portion of one of the members of the assembly. Also disclosed is a dual locking feature for alternately locking a driving component and an aligning component against movement where, in a first mode, the aligning component is operative when the driving component is locked and, in a second mode, the driving component is operative when the aligning component is locked. Additionally disclosed is a unique aligning component for aligning and exerting a compressive force on members of an associated coupling assembly. Lastly, there is disclosed a surgical instrument capable of assuming a variety of configurations to accommodate a number of anatomical orientations and operating situations.

Claims

1. A device for installing a coupling assembly having a plurality of coupling members for compression anastomosis of a tubular structure comprising a body having a bore and including driver means and cutter means, means for imparting rotational movement to said cutter means, means for supporting the coupling members of said assembly, means for aligning said coupling members and means for driving said driver means for urging said coupling members into locking engagement and advancing and rotating said cutter means.

2. A device for installing a coupling assembly having a plurality of coupling members for compression anastomosis of a tubular structure comprising

a body having a bore located therein and including a handle portion, an intermediate portion and a head portion, with said head portion having a recess intersecting said bore;

said recess being dimensioned and configured to include therein driver means and cutter means;

means for imparting rotational movement to said cutter means;

means for supporting the coupling members of said assembly;

means for aligning said coupling members; and

means for driving said driver means for urging said coupling members into locking engagement and advancing and rotating said cutter means.

3. The device according to claim 2 wherein said recess includes means for guiding the movement of said driver means.

4. The device according to claim 3 wherein said guiding means includes at least one channel disposed in said recess, with said channel slidingly engaging at least one tab disposed on said driver means.

5. The device according to claim 4 wherein said tab further includes means for disengaging said device from said assembly after assembly installation.

6. The device according to claim 5 wherein said disengaging means comprises at least one rib disposed on said tab.

7. The device according to claim 2 wherein said rotational means comprises ramp means for engaging and guiding complementary projecting means.

8. The device according to claim 7 wherein said ramp means includes at least one angled surface disposed in said recess and said projecting means includes at least one land disposed on said driver means, with said angled surface and said land being designed and configured for gliding coaction.

9. The device according to claim 7 wherein said ramp means includes at least one angled surface disposed on said driver means and said projecting means includes at least one land disposed in said recess, with said angled surface and said land being designed and configured for gliding coaction.

10. The device according to claim 2 further including one or more locking means for alternately locking said driving means and said aligning means against movement.

11. The device according to claim 10 wherein said locking means is adapted for movement between first and second locking positions.

12. The device according to claim 11 wherein said locking means in a first position releasably locks said driving means against movement while simultaneously allowing operation of said aligning means, said driving means being inoperative while said aligning means is operational.

13. The device according to claim 11 wherein said locking means in a second position releasably locks said aligning means against movement while simultaneously allowing operation of said driving means, said aligning means being inoperative while said driving means is operational.

14. The device according to claim 2 wherein said driving means includes a conduit slidably disposed in said bore, a first end of said conduit being adapted to engage a lever and a second end of said conduit being adapted to engage said driver means.

15. The device according to claim 2 wherein said aligning means comprises a core having a first end coupled to one of said coupling members and a second end coupled to a movable element, a knob coupled to said element, and means disposed in said handle portion for guiding the movement of said element and said knob.

16. The device according to claim 15 wherein said guide means includes at least one elongated slot cooperating with at least one pin coupling said element and said knob adapted for positioning said one coupling member relative to the other said coupling members.

17. The device according to claim 16 wherein said guide means further includes means for applying a compressive force between at least two of said coupling members.

18. The device according to claim 17 wherein said compressive force is achieved through a coaction of said pin and a curve disposed in one end of said slot.

19. The device according to claim 18 wherein said slot further includes one or more notches disposed along said slot for releasably locking said one coupling member in one or more positions relative to the other said coupling members.

20. The device according to claim 15 wherein said core is slidably disposed in a conduit disposed in said bore.

21. The device according to claim 20 wherein said conduit is slidably disposed in said core.

22. The device according to claim 2 wherein said intermediate portion is substantially straight.

23. A device for installing a coupling assembly having a plurality of coupling members for compression anastomosis of a tubular structure comprising

a body having a bore located therein and including a handle portion, an intermediate portion and a head portion, with said head portion having a recess intersecting said bore;

said recess being dimensioned and configured to include therein driver means and cutter means;

means for supporting the coupling members of said assembly;

means for aligning said coupling members;

means for driving said driver means for urging said coupling members into locking engagement and advancing said cutter means; and

locking means for alternately locking said driving means and said aligning means.

24. The device according to claim 23 wherein said locking means is adapted for movement between first and second locking positions.

25. The device according to claim 24 wherein said locking means in a first position releasably locks said driving means against movement while simultaneously allowing operation of said aligning means, said driving means being inoperative while said aligning means is operational.

26. The device according to claim 24 wherein said locking means in a second position releasably locks said aligning means against movement while simultaneously allowing operation of said driving means, said aligning means being inoperative while said driving means is operational.

27. A device for installing a coupling assembly having a plurality of coupling members for compression anastomosis of a tubular structure comprising

a body having a bore located therein and including a handle portion, an intermediate portion and a head portion, with said head portion having a recess intersecting said bore;

said recess being dimensioned and configured to include therein driver means and cutter means;

means for supporting the coupling members of said assembly;

means for aligning said coupling members, said aligning means comprising a core having a first end coupled to one of said coupling members and a second end coupled to a movable element, a knob coupled to said element, and guiding means disposed in said handle portion for directing the movement of said element and said knob for positioning said one coupling member relative to other said coupling members, with said guiding means including at least one elongated slot cooperating with at least one pin coupling said element and said knob for slidable conjoint axial movement; and

means for driving said driver means for urging said coupling members into locking engagement and advancing said cutter means.

28. The device according to claim 27 wherein said guiding means further includes means for applying a compressive force between at least two of said coupling members.

29. A device for installing a coupling assembly having a plurality of coupling members for compression anastomosis of a tubular structure comprising

a body having a bore located therein and including a handle portion, an intermediate portion and a head portion, with said head portion having a recess intersecting said bore;

said recess being dimensioned and configured to include therein driver means and cutter means;

means for supporting the coupling members of said assembly;

means for aligning said coupling members, said aligning means comprising a core having a first end coupled to one of said coupling members and a second end coupled to a movable element, a knob coupled to said element, and guiding means disposed in said handle portion for directing the movement of said element and said knob positioning said one coupling member relative to the other said coupling members, with said guiding means including at least one elongated slot cooperating with at least one pin coupling said element and said knob and further including means for applying a compressive force between at least two of said coupling members through a coaction of said pin and a curve disposed in one end of said slot; and

means for driving said driver means for urging said coupling members into locking engagement and advancing said cutter means.

30. A device for installing a coupling assembly having a plurality of coupling members for compression anastomosis of a tubular structure comprising

a body having a bore located therein and including a handle portion, an intermediate portion and a head portion, with said head portion having a recess intersecting said bore;

said recess being dimensioned and configured to include therein driver means and cutter means;

means for supporting the coupling members of said assembly;

means for aligning said coupling members, said aligning means comprising a core having a first end coupled to one of said coupling members and a second end coupled to a movable element, a knob coupled to said element, and guiding means disposed in said handle portion for directing the movement of said element and said knob positioning said one coupling member relative to the other said coupling members, with said guiding means including at least one elongated slot cooperating with at least one pin coupling said element and said knob, and with said slot further including one or more notches disposed along said slot for releasably locking said one coupling member in one or more positions relative to the other said coupling members; and

said for driving said driver means for urging said coupling members in locking engagement and advancing said cutter means.

31. A device for installing a coupling assembly having a plurality of coupling members for compression anastomosis of a tubular structure comprising

a body having a bore located therein and including a handle portion, an intermediate portion and a head portion, with said head portion having a recess intersecting said bore;

said recess being dimensioned and configured to include therein driver means and cutter means;

means for supporting the coupling members of said assembly;

means for aligning said coupling members;

means for driving said driver means for urging said coupling members into locking engagement and advancing said cutter means; and

locking means for releasably locking said aligning means against movement.