#$%^&*AU2019203573A120200116.pdf#####ARTICULATED STAPLING WITH FIRE LOCK ABSTRACT A loading unit (100) for a surgical apparatus (10), the loading unit (100) comprising: a shaft assembly (140)； an end effector (110) coupled to the shaft assembly (140) and positioned to articulate relative to the shaft assembly (140) between an unarticulated position and an articulated position； an I-beam assembly (154) supported in the shaft assembly (140) and selectively movable relative to the end effector (110) to fire the end effector (110)； and a fire lock assembly (160) supported on the shaft assembly (140) and configured to prevent the I-beam assembly (154) from firing the end effector (110) when the end effector (110) is disposed in the unarticulated position.
