Study on the Development of Two-Stage Centrifugal Blood Pump for Cardiopulmonary Support System

In the cardiopulmonary support system with an ECMO (extracorporeal membrane oxygenation), ahigher pump head is demanded for a blood pump. In order to realize a blood pump with higher pump head, higher anti-hemolysis and thrombosis performances, astudy on the development of unprecedented multistage blood pump was conducted. In consideration of the applicationof the blood pump for pediatric patients, a miniature two-stage centrifugal blood pump with the impeller's diameter of40mm was designed and the performance was examined in experiments and computations. Some useful knowledge for a design of the blood pump with higher anti-hemolysis and thrombosis performances was obtained.