COUNTERPULSE VAD

PERMANENT AND TEMPORARY HEART ASSIST DEVICES UTILIZING INTRA ARTERIAL AIR PRESSURE TO ASSIST THE CIRCULATING ASSIST MACHINERY AND CONTROLS THEREFOR; PERCUTANEOUS ACCESS DEVICES CONSISTING OF A DISK IMPLANTABLE BENEATH THE SKIN FOR USE IN TRANSMITTING FLUID, AIR, OR ELECTRICITY THROUGH THE COLLAR AND ATTACHMENTS THEREFOR; IMPLANTED BLOOD PUMPS AND ATTACHMENTS THEREFORE; AND EXTERNAL DRIVE UNITS SERVING AS PUMP ACTUATORS AND CONTROLLERS AND ATTACHMENTS THEREFOR