Abstract
Total artificial heart in dogs has been designed and fabricated and tested.
Characteristic performance were as follows. (1) implantable in dogs, (2) 200ml/kg/min of max. output, (3) feed back control with the responce to the venous return. (4) one-or double chamber system, (5) fixed air control in one chamber system, automa=tic air control in double chamber system, (6) no negative pressure (7) same size(8φ) ball valve in outfloe, (8) different size ans shape of inflow valve. In mock and acu=to dog experiments, it was elucidated that automatic air control in one chamber sys=tem should be developed, though pumping changed automatically according to the chan=ges of the venous return.