Patent ID: 7004727

Claim:
A blood component processing system comprising a cassette including a body containing preformed, fluid pressure actuated pump stations, preformed fluid flow paths, and preformed, fluid pressure actuated valves in the fluid flow paths, and a flexible diaphragm overlying the body and flexing in response to fluid pressure to operate the pump stations and valves, an actuator station including a holder to receive the cassette for use, a fluid pressure manifold assembly in the holder including an operative surface contacting the flexible diaphragm to selectively apply fluid pressure to flex the diaphragm in response to a control program, the actuator station including a door that opens to allow placement of the cassette into the holder and closes to seat the diaphragm against the operative surface, and a controller coupled to the fluid pressure manifold including the control program and a cassette integrity test function that ascertains presence of the cassette in the holder when the door is closed and enables use of the control program only if presence of the cassette is ascertained.