MANUALLY DRIVEN SURGICAL CUTTING AND FASTENING INSTRUMENT

摘要

A surgical cutting and fastening instrument that includes an elongate channel that is attached to a handle assembly by an elongate shaft assembly. The elongate channel is configured to receive a cartridge and has a pivotally translatable anvil attached thereto and a knife bar supported therein. The anvil may be selectively opened and closed by manipulating a closure trigger supported by the handle assembly. The knife bar may be distally advanced through the elongate channel by actuating a firing trigger that cooperates with a reversible rotary drive supported by the handle assembly. The knife bar may also be retracted to its starting position by actuating the firing trigger after the reversible rotary drive has been shifted to a retraction orientation.

主权项

1. A surgical instrument comprising:
a handle assembly; a closure drive supported by said handle assembly and configured to generate a closing motion and an opening motion; a firing drive supported by said handle assembly and configured to selectively generate a rotary firing motion upon actuation of a firing trigger operably coupled to said handle assembly and a rotary retraction motion upon another actuation of the firing trigger; an elongate shaft assembly coupled to said handle assembly and communicating with said closure drive and said firing drive to separately transfer said closing and opening motions and said rotary firing motion; and an end effector coupled to said elongate shaft assembly, said end effector comprising:
an elongate channel sized to receive a staple cartridge therein;an anvil pivotally coupled to said elongate channel and being pivotally responsive to said open and closing motions from said elongate shaft assembly; anda cutting and severing member operably supported within said elongate channel and being responsive to said rotary firing and retraction motions from said elongate shaft assembly.