Staple for use in surgical procedures

• US 8,579,938 B2
• Filed: 04/19/2012
• Issued: 11/12/2013
• Est. Priority Date: 07/23/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Heinrich, Russell, DeSantis, Robert J., Gresham, Richard D., Blier, Kenneth M.
• Primary Examiner(s): Severson, Ryan
• Assistant Examiner(s): Papeika, Rachel S
• Application Number:
  US13/450,753
• Publication Number:
  US 20120203274A1
• Time in Patent Office: 572 Days
• Field of Search: 606/219, 606/220, 2271751-1821, 227/19, 227/155
• US Class Current: 606/220
• CPC Class Codes: A61B 17/0643 with separate closing member, e.g. for interlocking with staple
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/0406 Pledgets

Abstract

A staple is provided having a backspan and a first and second legs extending distally from the backspan. Each of the first and second legs includes a bend dividing each leg into a traversing leg portion and a substantially linear clenching leg portion. A staple plate is positionable over the first and second legs between the backspan and the first and second clenching leg portions. An anvil assembly has first and second movable members which move toward to one another to engage outer surfaces of the first and second clenching leg portions. There is further disclosed a method of forming the staple through tissue.

Claims

1. A combination staple assembly and anvil assembly for use in tissue comprising:

a staple assembly including;

a backspan;

a first leg being divided into a first traversing leg portion and a first substantially linear clenching leg portion by a first bend;

a second leg being divided into a second traversing leg portion and a second substantially linear clenching leg portion by a second bend;

a staple plate positionable on the first and second legs between the backspan and the first and second clenching leg portions; and

an anvil assembly including first and second moveable anvil members configured to move towards one another and simultaneously engage outer surfaces of the corresponding first and second clenching leg portions of said first and second legs to form said first and second clenching leg portions substantially abutting an exterior surface of said staple plate.

2. The combination staple assembly and anvil assembly as recited in claim 1, wherein both the first and second linear clenching leg portions are oriented substantially parallel to the backspan.

3. The combination staple assembly and anvil assembly as recited in claim 1, wherein at least one of the first and second traversing leg portions is oriented substantially perpendicular to the backspan.

4. The combination staple assembly and anvil assembly as recited in claim 3, wherein both the first and second traversing leg portions are oriented substantially perpendicular to the backspan.

5. The combination staple assembly and anvil assembly as recited in claim 1, wherein the first and second bends are substantially 90 degrees.

6. The combination staple assembly and anvil assembly as recited in claim 1, wherein a combined length of the first and second clenching leg portions is less than an overall length of the backspan.

7. The combination staple assembly and anvil assembly as recited in claim 1, wherein a combined length of the first and second clenching leg portions is equal to an overall length of the backspan.

8. The combination staple assembly and anvil assembly as recited in claim 1, wherein a combined length of the first and second clenching leg portions is greater than an overall length of the backspan.

9. The combination staple assembly and anvil assembly as recited in claim 1, wherein the staple plate has first and second holes to receive the first and second traversing leg portions respectively.

10. The combination staple assembly and anvil assembly as recited in claim 9, wherein the distance between the first and second holes is substantially equal to an overall length of the backspan.

11. The combination staple assembly and anvil assembly as recited in claim 9, wherein the staple plate has an arcuate top surface.

12. The combination staple assembly and anvil assembly as recited in claim 1, wherein an overall length of the staple plate is greater than an overall length of the backspan.

13. The combination staple assembly and anvil assembly as recited in claim 1, wherein the first and second movable anvil members include corresponding first and second angled surfaces that are configured to engage the corresponding outer surfaces of the first and second clenching leg portions.

14. The combination staple assembly and anvil assembly as recited in claim 13, wherein the first and second movable anvil members include corresponding first and second finishing surfaces that are configured to secure the corresponding first and second clenching leg portions against an underside of the staple plate.

15. The combination staple assembly and anvil assembly as recited in claim 14, wherein the finishing surfaces are relatively linear.

16. The combination staple assembly and anvil assembly as recited in claim 1, wherein the first and second movable anvil members include corresponding first and second finishing surfaces that are configured to secure the corresponding first and second clenching leg portions against an underside of the staple plate.

17. The combination staple assembly and anvil assembly as recited in claim 1, wherein the first and second movable anvil members are moved laterally to engage the outer surfaces of the first and second clenching leg portions.

18. The combination staple assembly and anvil assembly as recited in claim 1, wherein the first and second clenching leg portions lie in substantially parallel relation to each other in a formed condition.