Buttress support design for EEA anvil

• US 9,010,612 B2
• Filed: 01/26/2012
• Issued: 04/21/2015
• Est. Priority Date: 01/26/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Stevenson, Richard P., Casasanta, Thomas Jr., Carter, Sally
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US13/358,544
• Publication Number:
  US 20130193191A1
• Time in Patent Office: 1,181 Days
• Field of Search: 227/19, 227/176.1, 227/178.1, 227/180.1, 606/139, 606/143, 606/151, 606/153, 606/219
• US Class Current: 227/180.1
• CPC Class Codes: A61B 17/07292 Reinforcements for staple line, e.g. pledgets
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07257 characterised by its anvil
• CPC Class Codes: A61B 2017/1132 End-to-end connections

Abstract

An apparatus for joining two hollow organ sections with an annular array of surgical staples includes a staple cartridge, an anvil, a buttress member, and a buttress mount. In particular, the staple cartridge includes a plurality of surgical staples in an annular array. The anvil includes an anvil member and a shaft extending therefrom. The anvil member defines a plurality of staple pockets for deforming the surgical staples. The anvil is movable relative to the staple cartridge component between spaced apart and approximated positions to adjustably clamp tissue between the staple cartridge and the anvil. The buttress member is concentrically aligned with the plurality of staple pockets defined in the anvil member. The buttress mount is detachably secured with the shaft of the anvil. The buttress mount includes at least one support member radially extending outward to secure the buttress member to the anvil member.

Claims

1. An apparatus for joining two hollow organ sections with an annular array of surgical staples, the apparatus comprising:

a staple cartridge component including a plurality of surgical staples in the annular array;

an anvil component including an anvil member and a shaft extending therefrom, the anvil member defining a plurality of staple pockets for deforming the plurality of surgical staples, the anvil component movable relative to the staple cartridge component between spaced apart and approximated positions to adjustably clamp tissue between the staple cartridge and anvil components;

a buttress member concentrically aligned with the plurality of staple pockets defined in the anvil member; and

a buttress mount detachably secured with the shaft of the anvil component, the buttress mount including an annular ring member and at least one support member radially extending outward from the annular ring member to secure the buttress member to the anvil member, the at least one support member at least partially underlying the buttress member to provide support thereto, wherein the buttress mount is separate from the buttress member, and the annular ring member of the buttress mount is secured to the shaft of the anvil component.

2. The apparatus according to claim 1, wherein the annular ring member is configured and dimensioned to receive the shaft of the anvil component therethrough.

3. The apparatus according to claim 1, wherein the at least one support member is disposed radially inward of the plurality of staple pockets.

4. The apparatus according to claim 1, wherein a radially outer peripheral portion of the at least one support member is flush with a peripheral edge of the anvil member.

5. The apparatus according to claim 1, wherein the plurality of staple pockets are arranged in annular rows, and the at least one support member extends radially outward of at least one of the annular rows of the plurality of staple pockets.

6. The apparatus according to claim 1, wherein the at least one support member at least partially overlies one of the plurality of staple pockets.

7. The apparatus according to claim 1, wherein the at least one support member has a radially varying thickness.

8. The apparatus according to claim 1, wherein the buttress member has an annular configuration, and wherein the buttress member is disposed in a juxtaposed relation with the plurality of staple pockets.

9. The apparatus according to claim 1, wherein the buttress mount engages a proximal surface of the buttress member.

10. The apparatus according to claim 1, wherein the buttress mount engages a distal surface of the buttress member.

11. The apparatus according to claim 1, wherein the buttress member is made of a biodegradable material.

12. The apparatus according to claim 1, wherein the anvil member defines a recess configured and dimensioned to receive the buttress mount therein.

13. The apparatus according to claim 12, wherein the at least one support member of the buttress mount engages an inner wall of the recess to provide securement of the buttress mount thereagainst.

14. The apparatus according to claim 1, further comprising a knife member concentrically arranged with the plurality of surgical staples in the staple cartridge component, the knife member movable relative to the staple cartridge component.

15. The apparatus according to claim 14, wherein the at least one support member of the buttress mount is disposed radially inward of the knife member when the knife member engages the buttress member.

16. An apparatus for joining two hollow organ sections with an annular array of surgical staples, the apparatus comprising:

a staple cartridge component including a plurality of surgical staples in an annular array;

an anvil component defining a plurality of staple pockets for deforming the plurality of surgical staples, the anvil component movable relative to the staple cartridge component between spaced apart and approximated positions to adjustably clamp tissue between the staple cartridge and anvil components;

a knife member concentrically arranged with the plurality of surgical staples in the staple cartridge component, the knife member movable relative to the staple cartridge component;

a buttress member concentrically aligned with the anvil component; and

a buttress mount detachably secured with the anvil component, the buttress mount including a core ring, an outer ring, and at least one spoke extending between and interconnecting the core ring and the outer ring, the buttress mount at least partially underlying the buttress member to provide support thereto, wherein the buttress mount is separate from the buttress member, and the core ring of the buttress mount is secured to a shaft of the anvil component.

17. The apparatus according to claim 16, wherein the buttress member is concentrically aligned with the plurality of staple pockets.

18. The apparatus according to claim 16, wherein the outer ring at least partially overlaps the plurality of staple pockets in the annular array.

19. The apparatus according to claim 16, wherein the buttress mount engages a proximal surface of the buttress member.

20. The apparatus according to claim 16, wherein the buttress mount engages a distal surface of the buttress member.

21. The apparatus according to claim 16, wherein the outer ring is disposed radially inward of the knife member when the knife member is actuated to engage the buttress member.

22. An apparatus for joining two hollow organ sections with an annular array of surgical staples, the apparatus comprising:

a handle assembly including a firing trigger;

an elongate tubular member extending distally from the handle assembly;

a staple cartridge component coupled to a distal portion of the elongate tubular member, the staple cartridge component including a plurality of surgical staples in the annular array;

an anvil component defining a plurality of staple pockets for deforming the plurality of surgical staples, the anvil component movable relative to the staple cartridge component between spaced apart and approximated positions to clamp tissue between the staple cartridge and anvil components;

a knife member concentrically arranged with the plurality of surgical staples in the staple cartridge component, the knife member movable relative to the staple cartridge component;

a buttress member concentrically aligned with the anvil component; and

a buttress mount detachably secured with the anvil component, the buttress mount including an annular ring member and at least one support member radially extending outward from the annular ring member, the buttress mount at least partially underlying the buttress member to provide support thereto, wherein the buttress member is separate from the buttress mount, and the annular ring member of the buttress mount is secured to a shaft of the anvil component.

23. The apparatus according to claim 22, wherein the at least one support member is disposed radially inward of the plurality of staple pockets.

24. The apparatus according to claim 22, wherein a peripheral portion of the at least one support member is flush with a peripheral edge of the anvil member.

25. The apparatus according to claim 22, wherein the plurality of staple pocket are arranged in annular rows, and the at least one support member extends radially outward of at least one of the annular rows of the plurality of staple pockets.

26. The apparatus according to claim 22, wherein the plurality of staple pockets are arranged in annular rows, and the at least one support member at least partially overlies at least one of the annular rows of the plurality of staple pockets.