Apparatus for endoscopic procedures

A shaft assembly for interconnecting at least one rotatable drive shaft of a hand-held electromechanical surgical device, and an end effector actuatable by an axial drive force, the shaft assembly comprising:

• a shaft coupling assembly configured and adapted for selective connection to a connecting portion of the surgical device and to be in operative communication with the at least one rotatable drive shaft of the surgical device;
• an outer tube having a proximal end supported by the shaft coupling assembly, the outer tube defining a central longitudinal axis;
• a proximal neck housing supported at a distal end of the outer tube;
• a distal neck housing pivotally connected to the proximal neck housing, wherein a distal end of the distal neck housing is configured and adapted for operative connection with the end effector;
• a flexible drive cable rotatably supported in the outer tube;
• a hub rotatably supported at a distal end of the distal neck housing, the hub rotatable about an axis of rotation coaxial with the central longitudinal axis;
• a rotation nut rotatably supported in the hub and connected to a distal end of the flexible drive cable, the rotation nut radially offset from the central longitudinal axis, wherein the rotation nut is configured to selectively connect to a rotatable drive axle of the end effector;
• an articulation rod at least partially slidably supported in the proximal neck housing;
• and
• an articulation link having a proximal end pivotally connected to the distal end of the articulation rod, and a distal end pivotally connected to the distal neck housing;
• wherein actuation of the rotatable drive shaft of the hand-held surgical device that is connected to the articulation rod causes the articulation rod to axially translate and axial translation of the articulation rod causes the distal neck housing to pivot off axis relative to the proximal neck housing.