Surgical stapling device with rotary multi-turn retraction mechanism

A powered surgical device configured to clamp and fasten tissue, the powered surgical device comprising:

• a shaft comprising a proximal end;
• an articulation joint;
• a motor-driven drive member movably supported in said shaft, wherein said motor-driven drive member extends through said articulation joint, and wherein said motor-driven drive member is driven distally away from said proximal end of said shaft during a tissue clamping motion;
• a beam coupled to said motor-driven drive member;
• a housing coupled to said proximal end of said shaft, wherein said housing comprises a multi-turn manually-operated retraction mechanism, wherein rotation of said multi-turn manually-operated retraction mechanism is configured to retract said motor-driven drive member proximally toward said proximal end of said shaft;
• and
• a clutch intermediate said motor-driven drive member and said multi-turn manually-operated retraction mechanism, wherein distal advancement of said motor-driven drive member by said multi-turn manually-operated retraction mechanism is prevented by said clutch.

A powered surgical device configured to clamp and fasten tissue, the powered surgical device comprising:

• a shaft comprising a proximal end and a distal end;
• an articulation joint;
• an end effector extending from said distal end, said end effector comprising an anvil and a fastener cartridge comprising a plurality of fasteners;
• a motor-driven drive member movably supported in said shaft, wherein said motor-driven drive member extends through at least a portion of said articulation joint, wherein a first distal advancement of said motor-driven drive member is configured to clamp said anvil and said fastener cartridge, and wherein a second distal advancement of said motor-driven drive member is configured to fire said fasteners from said fastener cartridge;
• and
• a housing coupled to said proximal end of said shaft, wherein said housing comprises a multi-turn manually-operated retraction mechanism, wherein a rotation of said multi-turn manually-operated retraction mechanism is configured to retract said motor-driven drive member proximally toward said proximal end of said shaft, and wherein said multi-turn manually-operated retraction mechanism is configured to effect displacement of said motor-driven drive member in a single direction.