Surgical device with three position safety trigger assembly

A powered handle assembly for a surgical device comprising:

• an outer housing defining a cavity;
• an actuation button supported on the outer housing;
• a rack supported within the outer housing, the rack having teeth and movable from a rack retracted position, to a rack clamp position, and subsequently to a rack advanced position;
• a motor/gear assembly associated with the rack, the motor/gear assembly operable to move the rack from the rack retracted position, through the rack clamp position, and subsequently to the rack advanced position;
• at least one safety switch supported on an inner housing, the at least one safety switch movable between first and second states;
• a bias arm supported adjacent to the at least one safety switch and including a cam member and an abutment member, the bias arm movable between a first position and a second position, wherein in the first position, the abutment member is engaged with the at least one safety switch to position the at least one safety switch in the second state and in the second position, the at least one safety switch is positioned in the first state, wherein the rack is configured to engage the bias arm as the rack moves from the rack retracted position to the rack clamp position to move the bias arm from the first position to the second position;
• and
• a safety trigger assembly including at least one safety button that extends through a slot in the outer housing, the safety trigger assembly positioned to engage the at least one safety switch and movable from a safe position, through an intermediate position, to a fire-ready position to position the at least one safety switch in the second state, wherein the bias arm is positioned to engage the safety trigger assembly as the bias arm moves from the first position to the second position to move the safety trigger assembly from the safe position to the intermediate position.