the inlet and outlet being the same, e.g. para-aortic counter-pulsation blood pumps

Full Title

Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance (heart stimulation A61H31/00; heart stimulators for electrotherapy A61N1/362) > Type thereof > Positive displacement blood pumps > including a displacement member directly acting on the blood > the displacement member being flexible, e.g. membranes, diaphragms or bladders > the inlet and outlet being the same, e.g. para-aortic counter-pulsation blood pumps