Apparatus for forming variable height surgical fasteners

A - Human Necessities – 61 – B

Patent

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A61B 17/068 (2006.01)

Patent

CA 2681186

A surgical device for applying a plurality of surgical staples is provided. The device includes a staple fastening assembly attached to a surgical instrument. The staple fastening assembly includes a pair of cooperating jaws, a jaw operating mechanism, and a gap sensor. A staple magazine having a plurality of staples and an anvil member having a plurality of staple pockets are attached to the jaws. The staple magazine includes a staple crimping cam and a staple dimpling cam that are operatively coupled to the surgical instrument. The jaw operating mechanism is operatively connected to a drive assembly in the surgical instrument for moving the jaws for automatically setting a tissue gap between the cooperating jaws. The gap sensor cooperates with the jaw operating mechanism for controlling staple formation.

L'invention concerne un dispositif chirurgical destiné à appliquer plusieurs agrafes chirurgicales. Ce dispositif comprend un ensemble de fixation d'agrafes relié à un instrument chirurgical. L'ensemble de fixation d'agrafes comprend une paire de mâchoires coopérantes, un mécanisme d'activation des mâchoires et un capteur d'intervalle. Un magasin d'agrafes comportant une pluralité d'agrafes et un élément d'enclume comportant une pluralité de poches pour agrafes sont fixés aux mâchoires. Le magasin d'agrafes comprend une came de compression des agrafes et une came d'embrèvement qui sont couplées de manière fonctionnelle à l'instrument chirurgical. Le mécanisme d'activation des mâchoires est raccordé de manière fonctionnelle à un ensemble d'entraînement de l'instrument chirurgical de façon à déplacer les mâchoires pour l'ajustement automatique d'un intervalle entre tissu entre les mâchoires coopérantes. Le capteur d'intervalle coopère avec le mécanisme d'activation des mâchoires pour contrôler la formation d'agrafes.

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