Scientists at the Texas Heart Institute are working to create a permanent artificial heart . The new mechanical device pumps blood through the body , rather than stopping it . Strong magnetic fields control the devices ' oscillations , which rotate about 2,000 times a second .
Scientists at the Texas Heart Institute are working to create a permanent artificial heart . The new heart device propels blood through the body , rather than pumps it . Two magnetic fields control the blades ' oscillations , which rotate about 2,000 times a minute .