Circular stapling instrument

摘要

A circular stapling instrument including a stapling forming assembly that is actuated independently from actuation of the cutting assembly is provided. The instrument includes a handle assembly, an elongate body extending from the handle assembly, a cartridge assembly mounted on a distal end of the elongate body. The cartridge assembly includes a pusher assembly and a knife assembly. The knife assembly is selectively fixed relative to the pusher assembly.

主权项

1. A method of stapling tissue comprising:
advancing a pusher assembly of a circular loading unit a first distance to eject staples from a staple cartridge; retracting a pusher adapter of the pusher assembly a second distance to cause a compressible member to expand to lock the pusher adapter relative to a knife pusher; and advancing the pusher adapter the second distance to cut tissue, wherein the knife pusher prevents the compressible member from compressing.