Surgical stapling instrument configured to apply a compressive pressure to tissue

摘要

A surgical stapling assembly. The surgical stapling assembly comprises a frame, a distal end, a first jaw comprising a channel, and a second jaw extending from the frame. The surgical stapling assembly comprises a channel retainer, wherein the channel is slidably attachable to the channel retainer. The surgical stapling assembly further comprises a plurality of staples and a staple firing member comprising a first cam configured to engage the first jaw and a second cam configured to engage the second jaw when the staple firing member is advanced from an unadvanced position toward the distal end, wherein one of the first jaw and the second jaw comprises a clearanced opening configured to permit the firing member to be unengaged with one of the first jaw and the second jaw when the firing member is in the unadvanced position.

主权项

1. A surgical instrument, comprising:
a handle, comprising:
a closure system configured to generate a closing motion when actuated;a closure release system configured to releasably hold said closure system in an actuated condition; anda firing system configured to generate a firing motion when actuated; a shaft extending from said handle; an articulation joint; and an end effector movable relative to said shaft about said articulation joint, wherein said end effector comprises:
a cartridge jaw, comprising:
a deck configured to support the tissue of a patient, wherein said deck comprises a first step and a second step, wherein said second step extends above said first step;a first longitudinal row of staple cavities defined in said first step;a second longitudinal row of staple cavities defined in said second step;staples removably stored in said first longitudinal row of staple cavities and said second longitudinal row of staple cavities;a first longitudinal row of staple support cradles aligned with said first longitudinal row of staple cavities; anda second longitudinal row of staple support cradles aligned with said second longitudinal row of staple cavities, wherein said second longitudinal row of staple support cradles extend above said first longitudinal row of staple support cradles;an anvil configured to deform said staples;a firing member comprising a first cam configured to engage said cartridge jaw and a second cam configured to engage said anvil; anda tissue gap defined between said deck and said anvil configured to receive the tissue of a patient, wherein said deck and said anvil are configured to co-operatively apply a first compressive pressure to a first region of the tissue and a second compressive pressure to a second region of the tissue which is different than the first compressive pressure.