A surgical device comprising: a handle assembly including a drive mechanism； an end effector； a shaft assembly configured to interconnect the handle assembly and the end effector, the shaft assembly including: a tubular body having a proximal portion configured to couple to the handle assembly and a distal portion, the tubular body defining a longitudinal axis； an articulating neck assembly coupled to the distal portion, the articulating neck assembly configured to couple to the end effector； and a release assembly disposed at the distal portion of the tubular body and configured to couple to an end effector, the release assembly including a pair of opposing cam blocks defining a rotational axis transverse to the longitudinal axis of the tubular body, the pair of opposing cam blocks being rotatable about the rotational axis.
