Interlocking buttress material retention system

• US 10,022,125 B2
• Filed: 05/17/2016
• Issued: 07/17/2018
• Est. Priority Date: 06/18/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: (Prommersberger) Stopek, Megan L.
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US15/156,642
• Publication Number:
  US 20160256166A1
• Time in Patent Office: 791 Days
• Field of Search: 227 19, 2271751, 2271761, 2271781, 2271801, 606139, 606151, 606153, 606219, 361773, 361776, 349150
• 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 17/0682 for applying U-shaped staples or clamps, e.g. without a forming anvil
• CPC Class Codes: A61B 17/0686 having a forming anvil staying below the tissue during stapling
• 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 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61B 2017/00893 pharmaceutically effective
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments

Abstract

A surgical stapler is provided having a pair of jaws including a staple containing cartridge and an anvil. Buttress material is releasable affixed to the staple containing cartridge and the anvil. One of the jaws includes a pair of longitudinal projections at a first end of the jaw and configured to frictionally engage corresponding slots in a first end the buttress material. One of the jaws includes a post at a second end of the jaw. The buttress material includes a hole in a second end of the buttress material for receipt of the post.

Claims

1. A surgical stapler comprising:

a jaw assembly including a staple cartridge and an anvil, at least one of the staple cartridge or the anvil having a tissue facing surface defining a longitudinally extending knife slot therein and including a round projection extending from the tissue facing surface, the round projection shaped to retain a buttress material and including first and second halves defining a channel therebetween, the channel corresponding to the longitudinally extending knife slot, the buttress material defining a first recess therein for receiving the round projection so that the buttress material is releasably disposed against the tissue facing surface, the buttress material having a bioactive agent for delivery of the bioactive agent to tissue, the bioactive agent having pharmacological activity with the tissue.

2. The surgical stapler according to claim 1, wherein the buttress material is recessed into the tissue facing surface.

3. The surgical stapler as recited in claim 1, wherein the round projection is disposed near a distal end of the at least one of the staple cartridge or the anvil.

4. The surgical stapler as recited in claim 1, wherein the buttress material comprises a bioabsorbable material.

5. The surgical stapler as recited in claim 1, wherein the buttress material comprises a natural biological polymer.

6. The surgical stapler as recited in claim 1, wherein the staple cartridge defines at least one linear row of staple pockets.

7. The surgical stapler as recited in claim 1, wherein the tissue facing surface of the at least one of the staple cartridge or the anvil includes a second projection.

8. The surgical stapler as recited in claim 7, wherein the second projection is disposed near a proximal end of the at least one of the staple cartridge or the anvil.

9. The surgical stapler as recited in claim 7, wherein the second projection has an elongate shape.

10. The surgical stapler as recited in claim 7, wherein the second projection includes a neck portion and a bulbous portion.

11. The surgical stapler as recited in claim 7, wherein the buttress material defines a second recess therein corresponding to, and configured to engage, the second projection.

12. The surgical stapler as recited in claim 7, wherein the tissue facing surface of the at least one of the staple cartridge or the anvil includes a third projection.

13. The surgical stapler as recited in claim 12, wherein the second and third projections are disposed on opposed sides of the longitudinally extending knife slot.

14. The surgical stapler as recited in claim 12, wherein the buttress material defines second and third recesses therein corresponding to, and configured to engage, the second and third projections.

15. The surgical stapler as recited in claim 1, wherein the round projection has a mushroom shape including an enlarged cap defining an underside flange configured to engage the buttress material.