ROLLER-TYPE PERFUSION PUMP HEAD Russian patent published in 1996 - IPC

FIELD: medical equipment. SUBSTANCE: perfusion pump has case, chamber for blood made in form of elastic tube laid onto internal surface cylindrical surface of the case, carrier with rollers mounted for contact with the tube, grips of ends of the tube made in form of holders fixed by hinges provided with removable insertions for different diameter tubes and locking unit for grips. The latter is made in form of a rocker mounted for rotation onto the axis between the grips and shoulders. Rockers rests against holders. Axis of rotation is made in form of a screw with cylindrical head, which has annular recess at the side turned to the rocker. Spring, flat washer and separator with balls are placed inside the recess in sequence. Balls are mounted for fixation radial grooves passing through axis of rotation of the rocker. radial grooves are made at the surface of the rocker turned to head of screw. EFFECT: improved reliability of operation of pump; reduced time for changing hose in head of perfusion pump. 5 dwg