Buttress Fixation for a Circular Stapler

• US 20140097224A1
• Filed: 10/10/2012
• Published: 04/10/2014
• Est. Priority Date: 10/10/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Prior, Scott J.
• Granted Patent: US 9,161,753 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 17/07292 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 17/1155 Circular staplers comprising a plurality of staples

Abstract

A stapling apparatus has a buttress material removably attached thereto by at least one anchor. The apparatus has a pusher with a protrusion for engaging the at least one anchor and releasing the buttress material.

Claims

1. A circular stapling apparatus, comprising:

an anvil assembly with an anvil member and a shaft;

a tubular body portion having a staple cartridge, the shaft of the anvil assembly being connectable to the tubular body portion so that the anvil assembly is movable toward and away from the tubular body portion, the staple cartridge including a plurality of staple and a pusher having a fingers for driving the staples, at least one of the fingers including a protrusion;

a buttress material removably attached to the anvil assembly, staple cartridge, or both, by at least one anchor; and

at least one of the anvil assembly and staple cartridge having a notch shaped for retaining the anchor, the pusher being movable to move the protrusion into engagement with the anchor in the notch.

2. The circular stapling apparatus according to claim 1, wherein the anchor is a length of suture.

3. The circular stapling apparatus according to claim 1, further comprising adhesive attaching the buttress material to the anvil assembly, staple cartridge, or both.

4. The circular stapling apparatus according to claim 1, further comprising a fastener holding the anchor and being positioned adjacent the notch.

5. The circular stapling apparatus according to claim 1, wherein the notch cinches the anchor.

6. The circular stapling apparatus according to claim 1, wherein the notch is defined in a tissue contacting surface of the staple cartridge.

7. The circular stapling apparatus according to claim 6, wherein the notch communicates with a staple receiving recess of the staple cartridge.

8. The circular stapling apparatus according to claim 1, wherein the notch has a first portion and a second portion, the first portion being smaller in dimension than the diameter of the anchor, and the second portion being bigger than the first portion.

9. The circular stapling apparatus according to claim 1, wherein the buttress material defines features selected from the group consisting of slits and perforations.

10. The circular stapling apparatus according to claim 9, wherein the buttress material defines slits that extend from an outer edge thereof.