903 人工心臓用ラジアル型磁気浮上遠心血液ポンプの開発(オーガナイズドセッション : 社会に貢献するメカトロニクス)

概要

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A magnetically suspended centrifugal blood pump, which not has the seal at the rotating shaft and the bearing of the motor shaft, has been developed. The developed pump consists of a thin rotor with an open type impeller and a stator to suspend and rotate the rotor. The rotor is actively suspended in radial direction and rotated by using electric magnetic field. Axial movement of the rotor is prevented by passive stability of the thin rotor. The P±2 pole algorithm and servo motor mechanism are adopted to levitate and rotate the rotor. A closed-loop circuit filled with the water was connected to the developed pump to examine performance of the pump and the magnetic suspension system. Maximum rotational speed, flow rate and head were 2000 rpm, 9 l/min and 200 mmHg, respectively. The rotor could be suspended completely during the entire pumping process. We conclude the developed pump has sufficient performance for the blood pump.
社団法人日本機械学会の論文
2000-09-08