Surgical stapling device

A surgical stapling device comprising:

• a handle assembly;
• an elongated body portion extending distally from the handle assembly;
• a shell assembly housing a plurality of staples, wherein the handle assembly includes a firing trigger actuable to fire the plurality of staples;
• a trigger lock to prevent actuation of the firing trigger, the trigger lock blocking movement of the firing trigger;
• an anvil assembly including an anvil head and an anvil center rod, the anvil head being movable relative to the shell assembly;
• an approximation mechanism, the approximation mechanism movable from a first position to a second position to move the anvil assembly relative to the shell assembly between a spaced position and an approximated position;
• a firing mechanism for advancing staples from the shell assembly, the firing mechanism actuable when the approximation assembly is in the second position and the anvil assembly is in the approximated position;
• and
• a lockout mechanism operatively associated with the approximation mechanism, the lockout mechanism movable from a non-blocking position to a blocking position, wherein in the non-blocking position the approximation mechanism is movable from the first position to the second position and in the blocking position movement of the approximation mechanism from the second position to the first position is prevented, wherein the lockout mechanism includes a locking plate, the locking plate rotatable independent of the trigger lock.

A surgical stapling device comprising:

• a handle assembly;
• an elongated body portion extending distally from the handle assembly;
• a shell assembly housing a plurality of staples;
• an anvil assembly including an anvil head and an anvil center rod, the anvil head being movable relative to the shell assembly;
• an approximation mechanism, the approximation mechanism movable from a first position to a second position to move the anvil assembly relative to the shell assembly between a spaced position and an approximated position;
• a firing mechanism for advancing staples from the shell assembly, the firing mechanism actuable when the approximation assembly is in the second position and the anvil assembly is in the approximated position;
• and
• a lockout mechanism operatively associated with the approximation mechanism, the lockout mechanism movable from a non-blocking position to a blocking position, wherein in the non-blocking position the approximation mechanism is movable from the first position to the second position and in the blocking position movement of the approximation mechanism from the second position to the first position is prevented;
• wherein the approximation mechanism includes a linearly advanceable drive screw, the drive screw having a distal end operably connected to the anvil assembly, wherein the lockout mechanism includes a locking tab movable into a blocking position to block distal advancement of the drive screw.