抄録
An ultracompact centrifugal pump has been developed as a blood pump of an implantable right ventricular assist device (RVAD). The centrifugal pump with hydrodynamically levitated impeller was designed at the working point of 5.0 L/min and 20 mmHg. The outer diameter of the impeller was 20 mm. The blade profile was optimized through numerical simulations of the flow field inside the pump primarily to reduce mechanical damages of blood cells during passing through the flow passages of the pump. The prototype was able to work at the design point at the rotational speed of 3000 rpm.
