Staple formed over the wire wound closure procedure

• US 8,308,041 B2
• Filed: 11/10/2010
• Issued: 11/13/2012
• Est. Priority Date: 11/10/2010
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Kostrzewski, Stanislaw
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US12/943,221
• Publication Number:
  US 20120111920A1
• Time in Patent Office: 734 Days
• Field of Search: 227/19, 227/175.1, 227/176.1, 227/180.1, 606/139, 606/143, 606/151, 606/153, 606/219
• US Class Current: 227/175.1
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/0686 having a forming anvil staying below the tissue during stapling
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/07292 Reinforcements for staple line, e.g. pledgets
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/07264 characterised by its staple forming cavities, e.g. geometry or material

Abstract

An anvil assembly is provided and includes an anvil member having a plurality of staple bending pockets formed in a face of the anvil member and a length of reinforcing material suspended across the staple bending pockets. Longitudinal channels are provided in the face of the anvil member to releasably retain the reinforcing material. The longitudinal channels transect the staple bending pockets and support and suspend the reinforcing material over the staple bending pockets such that a leg of a surgical staple can be bent around the reinforcing material. Various configurations of fully formed staples are also disclosed and include a backspan having first and second legs extending from the backspan. First portions of each of the first and legs extend from the backspan and define a plane with the backspan. Second portions of each of the first and second legs extend from the first portions and project outwardly from the plane defined by the backspan and the first second portions.

Claims

1. An anvil assembly for use with a surgical stapling instrument comprising;

an anvil member having a longitudinal axis and a first staple bending pocket and a second staple bending pocket; and

a length of reinforcing member extending across the first and second staple bending pockets, wherein the width of the reinforcing member is less than the width of the first and second staple bending pockets.

2. The anvil assembly as recited in claim 1, wherein each of the first and second staple bending pockets are oval shaped and have a longitudinal axis formed at an angle to the longitudinal axis of the anvil member.

3. The anvil assembly as recited in claim 2, wherein the longitudinal axes of the first and second staple bending pockets are parallel to each other.

4. The anvil assembly as recited in claim 2, wherein the longitudinal axes of the first and second staple bending pockets are perpendicular to the longitudinal axis of the anvil member.

5. The anvil assembly as recited in claim 2, wherein the longitudinal axes of the first and second staple bending pockets converge toward the longitudinal axis of the anvil member.

6. The anvil assembly as recited in claim 2, wherein the longitudinal axes of the first and second staple bending pockets diverge away from the longitudinal axis of the anvil member.

7. The anvil assembly as recited in claim 1, wherein the anvil member includes a longitudinal trough for receipt of the reinforcing member and extending across the first and second staple bending pockets.

8. The anvil assembly as recited in claim 7, wherein the trough has an opening with a width less than the width of the reinforcing member.

9. The anvil assembly as recited in claim 7, wherein the longitudinal trough suspends the reinforcing member across the first and second staple bending pockets.

10. A surgical stapling instrument, comprising:

an elongate member;

a handle assembly at a proximal end of the elongate member; and

an end effector at a distal end of the elongate member, the end effector including;

an anvil assembly including;

an anvil member having a longitudinal axis and a first staple bending pocket and a second staple bending pocket; and

a length of reinforcing member extending across the first and second staple bending pockets, wherein the width of the reinforcing member is less than the width of the first and second staple bending pockets; and

a staple cartridge, the anvil assembly and staple cartridge being movable relative to one another.

11. The surgical stapling instrument as recited in claim 10, wherein the anvil member includes a longitudinal trough for receipt of the reinforcing member.

12. The surgical stapling instrument as recited in claim 11 wherein the longitudinal trough extends across the first and second staple bending pockets.

13. The surgical stapling instrument as recited in claim 11, wherein the trough has an opening with a width less than the width of the reinforcing member.

14. The surgical stapling instrument as recited in claim 11, wherein the longitudinal trough suspends the reinforcing member across the first and second staple bending pockets.

15. The surgical stapling instrument as recited in claim 10, wherein the staple cartridge has a body portion with a plurality of staple holding pockets.

16. The surgical stapling instrument as recited in claim 15, wherein the staple holding pockets each contain a staple.

17. The surgical stapling instrument as recited in claim 15, wherein the staple cartridge has a sled.

18. The surgical stapling instrument as recited in claim 10, further comprising a drive bar operatively associated with the handle assembly.

19. The surgical stapling instrument as recited in claim 18, wherein the handle assembly includes a trigger.

20. The surgical stapling instrument as recited in claim 10, wherein the reinforcing member is selected from the group consisting of a wire, suture, or strip of material.

21. The surgical stapling instrument as recited in claim 10, wherein the length of reinforcing member extends across more than two staple bending pockets.

22. The surgical stapling instrument as recited in claim 10, wherein the anvil member is selected from the group consisting of a circular anvil member and an arcuate anvil member.