First there were two successful heart transplants at the Tri-Service General Hospital and Veterans General Hospital. Then Dr. Cheng Kuo-tsai, D.D.S., returned from the U.S. with the "Phoenix" model artificial heart which he had invented and signed agreements with National Taiwan University Hospital and Veterans General Hospital.
繼三總、榮總成功地為兩位女性病人移植心臟後，旅美的牙醫師鄭國材也帶回他發明的「鳳凰號」人工心臟，並與榮總、台大分別簽約。