Apparatus for connecting a sterile drape to an actuator of a surgical slush machine. The apparatus is an agitator that includes a support member and a latch. The sterile drape is attached to one surface of the support member and the latch extends from the opposite surface of the support member. The support member is configured to flex and bend when the agitator is operated by the actuator and the drape contains a solution to be made into slush. In one embodiment the support member has paddles extending from a central position. In another embodiment the support member is a disk that has an area of weakness that allows the support member to flex and bend. In one such embodiment the area of weakness is an annular section of reduced thickness.