Interlocking buttress material retention system

• US 20080308608A1
• Filed: 06/18/2007
• Published: 12/18/2008
• Est. Priority Date: 06/18/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Prommersberger, Megan L.
• Granted Patent: US 7,665,646 B2
• Time in Patent Office: Days
• US Class Current: 227/176.1
• 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 pair of jaws including a staple cartridge and an anvil, at least one of the jaws including at least two longitudinally extending projections positioned at a first end of the at least one jaw; and

a staple line buttress material releasably affixed to the at least one jaw and including recesses for receipt of the at least two projections.

2. The surgical stapler as recited in claim 1, wherein each of the at least two projections includes a neck portion and a bulbous portion.

3. The surgical stapler as recited in claim 1, wherein each of the at least two projections is relatively straight.

4. The surgical stapler as recited in claim 1, wherein the at least one jaw includes a longitudinally extending knife slot, the at least two projections being separated by the knife slot.

5. The surgical stapler as recited in claim 1, wherein the at least one jaw includes two sets of the at least two projections.

6. The surgical stapler as recited in claim 5, wherein the at least one jaw includes a longitudinally extending knife slot, the knife slot separating the two sets of the at least two projections.

7. The surgical stapler as recited in claim 1, wherein the at least on jaw includes a post at a second end and the buttress material includes a hole for receipt of the post.

8. The surgical stapler as recited in claim 7, wherein the post is split to allow passage of a knife therebetween.

9. The surgical stapler as recited in claim 7, wherein the post is solid.

10. The surgical stapler as recited in claim 7, wherein the post forms a mushroom shaped protrusion having a cap, the cap defining a flange for engagement with a portion of the buttress material.

11. The surgical stapler as recited in claim 10, wherein the post is split.

12. The surgical stapler as recited in claim 1, wherein the at least one jaw includes a pair of posts.

13. The surgical stapler as recited in claim 12, wherein the buttress material includes a pair of holes for receipt of the pair of posts.

14. The surgical stapler as recited in claim 12, wherein each post of the pair of posts is positioned adjacent an outside edge of the buttress material.

15. The surgical stapler as recited in claim 12, wherein the at least one jaw includes a longitudinally extending slot, the pair of posts being separated by the slot.

16. The surgical stapler as recited in claim 9, wherein the at least one jaw includes a longitudinally extending slot and the post is positioned distally of a distal end of the slot.

17. The surgical stapler as recited in claim 7, wherein the buttress material includes a longitudinal slit extending through the area of the buttress material defining the hole.