Patent ID: 8479967

Claim:
A surgical stapling device comprising: a handle; a tubular member extending from the handle; an end effector disposed on the tubular member, the end effector including first and second jaw members movable between open and approximated positions; and a retraction mechanism including: a clutch including a first disc and a second disc, the clutch being transitionable between a disengaged state in which the first and second discs are spaced apart and an engaged state in which the first and second discs are engaged with each other for concomitant rotation; a motor operatively coupled to the first disc; an actuation shaft configured to effect stapling of tissue disposed between the jaw members, the actuation shaft operatively coupled to the second disc, rotation of the second disc causing translation of the actuation shaft; and an actuation button movable to transition the clutch between the engaged and disengaged states, wherein the motor is actuated when the clutch is in the engaged state, which in turn causes the actuation shaft to be retracted.