Patent ID: 8820607

Claim:
A surgical apparatus, comprising: a handle assembly; an elongated shaft extending distally from the handle assembly and defining a longitudinal axis; a surgical tool disposed adjacent a distal portion of the elongated shaft; and a mechanism disposed in mechanical cooperation with the handle assembly, the mechanism having: a speed reducing mechanism configured to be driven by a motor, a first axis extending through the center of the speed reducing mechanism, the speed reducing mechanism being rotatable about the first axis, the first axis being parallel to the longitudinal axis; a clutch operatively coupled to the speed reducing mechanism, the clutch having a locked state and an unlocked state, a second axis extending through the center of the clutch, the second axis being transverse to the longitudinal axis, the clutch being rotatable about the second axis, the second axis being offset from the first axis; and a firing drive adapted to actuate the surgical tool of the surgical apparatus, the firing drive being adapted to move along the longitudinal axis in response to a rotation of a shaft driven by the clutch while in the locked state, and wherein the shaft rotates upon activation of the motor.