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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0205937 (2011-08-09) |
| 등록번호 | US-8210414 (2012-07-03) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 523 인용 특허 : 104 |
A surgical stapling instrument is provided having systems for securing buttress material to the anvil and staple containing cartridge associated with the surgical instrument. The system includes a retainer configured to engage the anvil or the staple containing cartridge and capture the buttress mat
A surgical stapling instrument is provided having systems for securing buttress material to the anvil and staple containing cartridge associated with the surgical instrument. The system includes a retainer configured to engage the anvil or the staple containing cartridge and capture the buttress material between the retainer and the anvil or staple containing cartridge. The disclose retainer engages the anvil or staple containing cartridge in snap fit or friction fit fashion. The buttress material includes a circumferential perforation line enabling the center of the buttress material to be stapled to tissue while the remainder of the buttress material remains with the anvil or staple containing cartridge.
1. A surgical instrument having a system of retaining buttress material comprising: a jaw assembly including a first jaw and a second jaw, at least one of the first jaw and the second jaw defining staple pockets for retaining staples; anda buttress material having a central portion and a peripheral
1. A surgical instrument having a system of retaining buttress material comprising: a jaw assembly including a first jaw and a second jaw, at least one of the first jaw and the second jaw defining staple pockets for retaining staples; anda buttress material having a central portion and a peripheral portion including a circumferential perforation line separating the central portion from the peripheral portion, the peripheral portion being attached to a tissue contacting surface of at least one of the first jaw and the second jaw, the central portion being separable from the peripheral portion after the staples are fired, the buttress material being preloaded on a surgical stapler at the time of manufacture. 2. The surgical instrument according to claim 1, further comprising a buttress retainer having an open center portion and being attached to at least one of the first jaw and the second jaw, the peripheral portion of the buttress material being retained against the tissue contacting surface of the at least one of the first jaw and the second jaw by the buttress retainer. 3. The surgical instrument according to claim 2, wherein the buttress retainer includes at least one depending leg for engaging at least one of the first jaw and the second jaw. 4. The surgical instrument according to claim 3, wherein the at least one depending leg of the buttress retainer includes an inwardly directed projection configured to engage an edge of one of the first jaw and the second jaw, to retain the edge of the corresponding jaw between the inwardly directed projection and the buttress retainer. 5. The surgical instrument according to claim 4, wherein the inwardly directed projection of the at least one depending leg of the buttress retainer is adapted to slide over the edge of the corresponding jaw. 6. The surgical instrument according to claim 4, wherein the inwardly directed projection of the at least one depending leg of the buttress retainer is adapted to snap fit over the edge of the corresponding jaw. 7. The surgical instrument according to claim 3, wherein the at least one depending leg frictionally engages the raised edge of the corresponding jaw. 8. The surgical instrument according to claim 7, wherein the at least one depending leg frictionally engages the raised edge of the corresponding jaw. 9. The surgical instrument according to claim 2, wherein the buttress retainer is a circular ring. 10. The surgical instrument according to claim 9, wherein the circular ring includes a plurality of depending legs for engaging at least one of the first jaw and the second jaw. 11. The surgical instrument according to claim 10, wherein the plurality of depending legs each includes an inwardly directed projection configured to engage an edge of one of the first jaw and the second jaw, to retain the edge of the corresponding jaw between the inwardly directed projection and the buttress retainer. 12. The surgical instrument according to claim 11, wherein the inwardly directed projections of the plurality of depending legs of the buttress retainer are adapted to snap fit over the edge of the corresponding jaw. 13. The surgical instrument of claim 10, wherein the plurality of depending legs extend in equidistant radial speed relation around the circular ring. 14. The surgical instrument according to claim 2, wherein the buttress retainer is a rectangular frame including a distal end and a proximal end, and a first side and a second side extending between the distal and proximal ends. 15. The surgical instrument according to claim 14, wherein the buttress retainer includes a first leg depending from the first side and a second leg depending from the second side. 16. The surgical instrument according to claim 15, wherein the first leg and the second leg extend longitudinally along an entire length of the corresponding side. 17. The surgical instrument according to claim 15, wherein the first leg and the second leg each include an inwardly directed projection configured to engage edges of one of the first jaw and the second jaw. 18. The surgical instrument according to claim 17, wherein the inwardly directed projections of the first and second legs of the buttress retainer are adapted to slide over the edges of the corresponding jaw. 19. The surgical instrument according to claim 17, wherein the inwardly directed projections of the first and second legs of the buttress retainer are adapted to snap fit over the edges of the corresponding jaw. 20. The surgical instrument according to claim 15, wherein the first leg and the second leg are configured to engage raised edges of one of the first jaw and second jaw. 21. The surgical instrument according to claim 20, wherein the first leg and the second leg frictionally engage the raised edges of the corresponding jaw. 22. The surgical instrument according to claim 1, wherein the first jaw and the second jaw each include a buttress material. 23. The surgical instrument according to claim 22, further comprising a first buttress retainer for retaining the buttress material of the first jaw and a second buttress retainer for retaining the buttress material of the second jaw, each of the first and second buttress retainers having an open center portion and being attached to its corresponding jaw, the peripheral portion of each buttress material being retained by its respective buttress retainer. 24. The surgical instrument according to claim 23, wherein the first buttress retainer is retained to the first jaw by engaging an edge of the first jaw and the second buttress retainer is retained to the second jaw by a friction fit against a raised edge of the second jaw. 25. The surgical instrument according to claim 22, wherein the buttress material of the first jaw is different from the buttress material of the second jaw. 26. The surgical instrument according to claim 1, wherein the buttress material is a constructed from a single material.
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