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Jarvik 7 is the first successful artificial heart intended for permanent implantation in a human being. It is made from polyurethane plastic and aluminium. Jarvik 7 is powered by compressed air.

Barney Clark became the first person to receive a Jarvik 7, in Salt Lake City, December 1982. It kept him alive for 112 days.

Jarvik 7 is an invention of Dr. Robert Jarvik. He had developed the heart during the late 1970s, working with many other researchers. It consists of two ventricles (the heart's lower atriums) with air chambers and six titanium valves. It attaches to the patient's natural auricles (the heart's upper atriums).

If you happen to be near Washington DC some time, you can visit the National Museum of American History in the Smithsonian Institute to see this odd looking fellow for real.

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