Abstract
An artificial organ is a great boon to medical cares produced by the collaboration of medicine and engineering. Practical use of artificial organs actually contributes to variety of medical cares and prolongation of the life of patients, and further introduction of new concepts of medical cares to medicine. The switchover of idea often causes a great discovery. Medicine is no exception to this rule. Medicine is deeply indebted to medical technology for remarkable progress in modern medical cares. Collaboration of medicine and engineering surely develops the medical technology, but unfortunately does not necessarily meet our ideal to date. It is an urgent necessity for further development of artificial organs to establish fresh collaboration of medicine and engineering.
