Surgical stapler with universal articulation and tissue...

Details Surgical stapler with universal articulation and tissue... Surgical stapler with universal articulation and tissue...

A - Human Necessities

61

B

A61B 17/072 (2006.01)

Patent

CA 2500825

A tool assembly for a surgical stapling device includes a channel member for supporting a staple cartridge therein and an anvil to deform a plurality of staples ejected from the staple cartridge thereagainst. The tool assembly also includes a sled which is movable to force the staples from the cartridge against the anvil to staple tissue disposed between the anvil and the staple cartridge. A dynamic clamping member is included which has a pin which movably engages the anvil and a flange which movably engages the channel assembly. The dynamic clamping member is mounted to and movable with the sled. The pin and the flange of the dynamic clamping member cooperating to oppose the forces associated with clamping and stapling tissue and also to maintain a substantially uniform gap between the anvil and the staple cartridge during stapling of the tissue.

L'invention concerne un ensemble instrument pour agrafeuse chirurgicale, qui comprend un élément à canal pour loger une cartouche d'agrafes, et une butée pour déformer plusieurs agrafes éjectées de la cartouche d'agrafes. L'ensemble instrument comprend également un traîneau pouvant être déplacé pour presser les agrafes contre la butée et les éjecter de la cartouche aux fins d'agrafer un tissu disposé entre la butée et la cartouche. Un élément de pinçage dynamique comprend une broche mobile qui pénètre dans la butée et une bride mobile qui pénètre dans l'ensemble à canal. L'élément de pinçage dynamique est fixé au traîneau avec lequel il se déplace. La broche et la bride de l'élément de pinçage dynamique coopèrent pour opposer des forces associées au pinçage et à l'agrafage du tissu, ainsi que pour maintenir un écart sensiblement uniforme entre la butée et la cartouche d'agrafes pendant l'agrafage du tissu.

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