Patent ID: 7927316

Claim:
A sterile transfer device for fluids comprised of a body having a bore formed through at least a portion of its interior, a movable plunger contained within the bore, wherein the body and the plunger are formed of plastic, the body having a first and a second end, the first end containing a face designed to be attached to an upstream component, the plunger having a corresponding first and second end, the plunger having a shape corresponding to that of the bore and being of a diameter less than that of the bore, a port formed on the component selected from the group consisting of the second end of the plunger and a portion of the body downstream of the first end of the body, the port being connected to a downstream component, one or more seals between the plunger and the bore to form a liquid tight seal between various portions of the plunger and the bore, the first end of the plunger when in a closed position being in alignment with the face of the body, which combined, form a steamable surface and a sterile barrier against the environment to the rest of the interior of the body, the plunger and downstream components and a cam slot formed in the body, a cam formed on an outer surface of the plunger and contained within the cam slot and a handle formed on the plunger to move the plunger within the bore from a closed to an open and then back to a closed position, wherein the cam remains within the cam slot as the plunger moves from a closed position to an open and back to a closed position.