Apparatus for endoscopic procedures

An end effector for performing a surgical function and being connectable to an electromechanical power source, the end effector comprising:

• an upper jaw and a lower jaw, at least one of the upper jaw and the lower jaw being movable in relation to the other of the upper jaw and the lower jaw, wherein the lower jaw of the end effector is configured to selectively receive a cartridge assembly;
• a drive beam slidably supported in the lower jaw and being translatable through each of the upper jaw and the lower jaw to move the lower jaw relative to the upper;
• a cartridge assembly configured for loading into the lower jaw, the cartridge assembly including an actuation sled slidably supported therein and being configured to expel at least a portion of a plurality of staples loaded in the cartridge assembly upon a distal movement of the actuation sled from a proximal-most position;
• a drive screw rotatably supported in the lower jaw, wherein the drive beam is threadably supported on the drive screw, whereby rotation of the drive screw results in axial translation of the drive beam, wherein the drive screw defines a proximal coupling socket;
• a proximal coupling hub defining a proximal facing opening;
• a lock actuator having at least a first position and a second position;
• and
• a lock bar supported in the proximal coupling hub and being operatively engageable by the lock actuator, the lock bar including:
• a first position in which the lock bar does not extend across the opening of the proximal coupling hub;
• and
• a second position in which the lock bar at least partially extends across the opening of the proximal coupling hub.

An adapter shaft assembly for selectively interconnecting an end effector and an electromechanical power source, the adapter shaft assembly comprising:

• an adapter housing configured and adapted for selective connection to at least one rotatable drive shaft of the electromechanical power source;
• an outer tube having a proximal end supported by the adapter housing and a distal end configured and adapted for operative connection with the end effector;
• and
• at least one force transmitting assembly for interconnecting a respective one of the at least one rotatable drive shaft of the electromechanical power source and at least one rotation receiving member supported in the end effector, wherein the at least one force transmitting assembly includes:
• a flexible drive cable extending from the end effector, the flexible drive cable having a first end that is connected to a rotatable drive shaft that is connected to the at least one rotatable drive shaft of the electromechanical power source and a second end that is connectable to the at least one rotation receiving member of the end effector, wherein the at least one force transmitting assembly transmits a rotation of the rotatable drive shaft of the electromechanical power source to the at least one rotation receiving member of the end effector.

An end effector for performing a surgical function and being connectable to an electromechanical power source, the end effector comprising:

• an upper jaw and a lower jaw, at least one of the upper jaw and the lower jaw being movable in relation to the other of the upper jaw and the lower jaw, wherein the lower jaw of the end effector is configured to selectively receive a cartridge assembly;
• a drive beam slidably supported in the lower jaw and being translatable through each of the upper jaw and the lower jaw to move the lower jaw relative to the upper;
• a drive screw rotatably supported in the lower jaw, wherein the drive beam is threadably supported on the drive screw, whereby rotation of the drive screw results in axial translation of the drive beam, wherein the drive screw defines a proximal coupling socket;
• and
• a flexible drive cable having a first end that is connectable to a rotatable drive shaft that is connected to at least one rotatable drive shaft of an electromechanical power source, and a second end that is connected to the proximal coupling socket of the drive screw, wherein the flexible drive cable transmits a rotation of the rotatable drive shaft of the electromechanical power source to the drive screw of the end effector.