In this photo released by L.VAD Technology Inc., Dr. Adrian Kantrowitz is shown in New York in 1968. Dr. Kantrowitz, who performed the first human heart transplant in the United States in 1967 also pioneered development of mechanical devices to prolong the life of patients with heart failure, died in Ann Arbor, Mich., Friday, Nov. 14, 2008. He was 90. (AP Photo/L.VAD Technology Inc.)