Development and evaluation of a Stirling-powered cardiac assist system. Annual report, May 1974--Jul 1975

The Stirling-Cycle engine is designed to power implantable physiologically compatible heart-assist and total heart replacement devices. Heat is provided by a /sup 238/Pu radioisotope capsule. Program activity during this report period included the development of the PAC-5 and PAC-5M actuators and the MK-VII engine. The report describes extensive endurance and accelerated life testing of complete LVAD systems and individual components. (GRA)