Adapter direct drive with manual retraction, lockout and connection mechanisms

A surgical device comprising:

• an end effector including a first jaw and a second jaw moveable relative to the first jaw;
• a handle assembly including at least one motor mechanically coupled to the end effector;
• and
• an adapter assembly removably coupled to a proximal end of the end effector and a distal end of the handle assembly, the adapter assembly including:
• a housing;
• a drive mechanism disposed within the housing and configured to couple the at least one motor to the end effector;
• and
• a drive coupling assembly including:
• a housing coupled to the housing of the adapter assembly and selectively couplable to the handle assembly;
• a first drive gear disposed within the housing;
• and
• a retraction assembly coupled to the housing of the drive coupling assembly and selectively couplable to the drive mechanism such that rotation of the drive coupling assembly about a longitudinal axis defined by the adapter assembly and relative to the housing of the adapter assembly actuates the drive mechanism, the retraction assembly including:
• a lock rocker pivotally coupled within the drive coupling assembly;
• and
• a lock ring rotatable relative to the drive coupling assembly, wherein rotation of the lock ring engages the lock ring with the lock rocker to meshingly-engage the lock rocker with the first gear.

A surgical device adapter for coupling an end effector to a handle assembly, the surgical device adapter comprising:

• a housing;
• a drive mechanism disposed within the housing and couplable to the handle assembly and the end effector, the drive mechanism including a first drive screw configured to be coupled to the end effector to actuate the end effector;
• and
• a drive coupling assembly coupled to the housing and selectively couplable to the handle assembly, the drive coupling assembly including a first drive gear mechanically engaged to the first drive screw and a retraction assembly selectively couplable to the drive mechanism such that rotation of the drive coupling assembly about a longitudinal axis defined by the surgical device adapter and relative to the housing actuates the drive mechanism, the retraction assembly including:
• at least one latch pivotally coupled to the drive coupling assembly and configured to engage the handle assembly, wherein the at least one latch includes a tab coupled to a distal portion thereof, the tab configured to engage the first gear;
• and
• a lock ring rotatable relative to the housing, wherein rotation of the lock ring engages the lock ring with the tab to meshingly-engage the tab with the first gear.