707 アキシャル型磁気浮上モータを用いた人工心臓用遠心ポンプの開発

概要

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The life time of a rotary blood pump as an artificial heart is mainly determined by the durability of mechanical parts such as bearings and seals. The purpose of this study is to develop a durable centrifugal blood pump with self-bearing motor techniques. In this paper, a magnetically suspended centrifugal blood pump by using an axially levitated motor is reported. The axially levitated motor consists of a top stator, a levitated rotor, and a bottom stator. The levitated rotor is set between the top and the bottom stator. The radial movement of the rotor is restricted passively by using two ring-shaped permanent magnets on the rotor and casing circumference. The maximum head pressure and the maximum flow rate of the magnetically suspended centrifugal blood pump were 198mmHg and 8.8L/min, respectively. The developed pump displayed good magnetic suspension performance and sufficient pump performance as a ventricular assist device.
社団法人日本機械学会の論文
2003-09-19