#$%^&*AU2019204962A120190725.pdf#####APPARATUS FOR ENDOSCOPIC PROCEDURES ABSTRACT An adapter assembly comprising: an elongated body (200) having a distal portion couplable to a proximal portion of an end effector (300), the elongated body (200) including: an actuation bar (284) movable upon engagement of an end effector (300) with the elongated body (200) to secure the end effector (300) to the elongated body (200)； a release button (282) coupled to the actuation bar (284) such that the release button (282) is movable by the actuation bar (284) upon engagement of the end effector (300) with the elongated body (200)； and a sensor (287) actuatable by the release button (282) being moved by the actuation bar (284), the sensor (287) configured to transmit a signal indicative of the end effector (300) being secured to the elongated body (200).
