Abstract
We have been developing a pulsatile roller pump for infant's cardio-pulmonary bypass. The pump has following feathers: (1) a specially designed head-casing for improving output pressure waveform, (2) micro-processor controlled servo motor system for both precise flow control and high pumping rate (60-240[bpm]), (3) micro-processor aided operational-guide. The reliability of the pump was proved by 12 clinical cases (2 mo-7 yr). The pump produced pulsatile pressure waveform satisfactorily while the clinical experiences.
