An electromechanical surgical system (10) is disclosed including a hand-held surgical instrument (100), an end effector (400) configured to perform at least one function, and a shaft assembly (200) arranged for selectively interconnecting the end effector and the surgical instrument. The shaft assembly includes a linkage (500) having a proximal housing (502) and a distal housing (504) at least partially received within the proximal housing. The distal housing is rotatable relative to the proximal housing and configured to selectively interconnect the end effector to the shaft assembly. The shaft assembly further includes a wire (600) extending through the linkage having a central portion (604) disposed within an annular groove (528) defined between the proximal and distal housings. The central portion of the wire is annularly wound within the annular groove to define a coil. The coil is configured to at least one of radially expand and contract upon rotation of the distal housing relative to the proximal housing.
