Structure for attaching buttress material to anvil and cartridge of surgical stapling instrument

• US 10,368,868 B2
• Filed: 03/09/2017
• Issued: 08/06/2019
• Est. Priority Date: 03/09/2017
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Aranyi, Ernie
• Primary Examiner(s): Smith, Scott A
• Application Number:
  US15/454,043
• Publication Number:
  US 20180256164A1
• Time in Patent Office: 880 Days
• Field of Search: 227 19, 2271751, 2271752, 2271761, 2271781, 2271801, 606139, 606153, 606 29
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• 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 2017/00893 pharmaceutically effective
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 5/6858 with a distal basket, e.g. expandable basket
• CPC Class Codes: A61B 5/6859 with multiple distal splines

Abstract

An end effector of a surgical stapler includes first and second jaw members and a buttress material. The first jaw member is moveable relative to the second jaw member. The first jaw member includes a contact surface, a first projection, and a catch. The catch includes first and second fingers distal of the first projection. The second finger is biased toward the contact surface. The buttress material defines a longitudinal axis. The buttress material is releasably secured to the first jaw member. The buttress material defines first, second, and third slots formed therein. The first projection of the first jaw member is received in the first slot of the buttress material. The first finger of the catch is received in the second slot of the buttress material.

Claims

1. An end effector of a surgical stapler, comprising:

first and second jaw members, the first jaw member moveable relative to the second jaw member, the first jaw member including a contact surface, a first projection, and a catch, the catch including first and second fingers distal of the first projection, the second finger biased toward the contact surface; and

a buttress material defining a longitudinal axis, the buttress material releasably secured to the first jaw member, the buttress material defining first, second, and third slots formed therein, the first projection of the first jaw member received in the first slot of the buttress material, the first finger of the catch received in the second slot of the buttress material.

2. The end effector according to claim 1, wherein the first and second fingers of the catch are formed of an elastic material.

3. The end effector according to claim 1, wherein the first and second fingers of the catch define an acute angle with respect to each other.

4. The end effector according to claim 1, wherein the second finger of the catch includes a head portion and a neck portion, the head portion defining a first width, the neck portion defining a second width smaller than the first width.

5. The end effector according to claim 4, wherein the head portion of the second finger may be configured to engage the contact surface of the first jaw member.

6. The end effector according to claim 1, wherein the first jaw member includes an anvil assembly.

7. The end effector according to claim 1, wherein the buttress material is transitionable between an unexpanded state and an expanded state.

8. The end effector according to claim 1, wherein the second and third slots of the buttress material are adjacent to each other.

9. The end effector according to claim 1, wherein the second slot of the buttress material is defined transverse to the longitudinal axis of the buttress material.

10. The end effector according to claim 1, wherein the third slot of the buttress material extends along a length of the longitudinal axis of the buttress material.

11. The end effector according to claim 1, wherein a proximal portion of the buttress material is tapered.

12. An end effector of a surgical stapler, comprising:

first and second jaw members, the first jaw member moveable relative to the second jaw member, the first jaw member including a contact surface and a catch having first and second fingers, the second finger biased toward the contact surface, the second jaw member including first and second projections, the second projection distal of the first projection; and

a buttress material defining a longitudinal axis, the buttress material releasably secured with at least one of the first or second jaw members, the buttress material defining first, second, and third slots formed therein, the first projection of the second jaw member received in the first slot of the buttress material when the buttress material is secured with the second jaw member, the first finger of the catch received in the second slot of the buttress material when the buttress material is secured with the first jaw member, the second projection of the second jaw member received in the third slot of the buttress material when the buttress material is secured with the second jaw member.

13. The end effector according to claim 12, wherein the first and second fingers of the catch are formed of an elastic material.

14. The end effector according to claim 12, wherein the first and second fingers of the catch define an acute angle with respect to each other.

15. The end effector according to claim 12, wherein the second finger of the catch includes a head portion and a neck portion, the head portion defining a first width, the neck portion defining a second width smaller than the first width.

16. The end effector according to claim 15, wherein the head portion of the second finger is configured to engage the contact surface of the first jaw member.

17. The end effector according to claim 12, wherein the first jaw member includes an anvil assembly.

18. The end effector according to claim 12, wherein the buttress material is transitionable between an unexpanded state and an expanded state.

19. The end effector according to claim 12, wherein the second slot of the buttress material is defined transverse to the longitudinal axis of the buttress material.

20. The end effector according to claim 12, wherein the third slot of the buttress material is extends along a length of the longitudinal axis of the buttress material.

21. A buttress material for use with a surgical stapling instrument, the buttress material comprising:

an elongate body defining a longitudinal axis, the elongate body including proximal and distal portions, the proximal portion including a tapered portion, the proximal portion defining first and second proximal slots separated by a wall, the first and second proximal slots extending transverse to the longitudinal axis, the distal portion defining first and second distal slots, the first distal slot is defined transverse to the longitudinal axis, the second distal slot extends along a length of the longitudinal axis, the second distal slot distal of the first distal slot.

22. The buttress material according to claim 21, wherein the elongate body includes a tab distal of the second distal slot.