The Jarvik-7 artificial heart, made of aluminum and plastic, was implanted in 1982 in a retired Des Moines, Wash., dentist, Barney Clark. He lived for 112 days.

He worked with a team at the University of Utah to design the first permanent artificial heart implanted in a human.

He worked with a team at the University of Utah to create a mechanical heart. It was later used in patients awaiting an organ ...

As the heart muscle contracts and relaxes, the valves open and close, letting blood flow into the ventricles and out to the body at alternate times ... which include animal valves and donated human ...