Abstract
I have published 475 medical papers with my coworkers since I graduated medical school in 1949. Among them 178 papers or 37.4% were related with artificial organs directly or indirectly. As a lecture of the President, several of these 178 papers were presented in 5 categories; (1) pacemakers and related devices, (2) extracoreal circulation and related devices, (3) artificial tissues, (4) surgical instruments, (5) medical electronics devices.