抄録
Pulsatile cardiopulmonary bypass system for clinical use was developed. To improve the flow characteristics of the pump and to determine its optimal drive conditions, a mechanical simulator was used. Findings were as follows:
1) Incorporation of a flexible reservoir of 60ml at the pump inlet produced the maximum outflow and increased it by 30% compared with the non-reservoir case.
2) Water hammer phenomenon at the pump inlet disappeared when the systolic time of the pump was reduced by 10% from the full stroke condition. Under this optimal drive condition, mechanical hemolysis was negligible.
