703 人工心臓用アキシャル型磁気浮上遠心ポンプの小型化(関東支部茨城講演会)

概要

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The life time of a centrifugal pump for 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 pump for artificial heart with magnetic suspension technique. Developed magnetically suspended motor consists of a top stator, a rotor, a bottom stator, and a permanent magnet bearing. The rotor is levitated between the top and the bottom stators. The tilt and axial position of the rotor is controlled with the top stator. The rotation of the rotor is controlled with the bottom stator. The top stator and the rotor were redesigned to miniaturize the motor by using the three-dimensional magnetic field analysis. As a result, the diameter of rotor was reduced from 60 to 54 [mm], and the motor height was reduced from 56 to 51 [mm] without deterioration of the suspension performance. The volume of the motor was reduced by 26.2 [%], and the weight of the motor was reduced by 21 [%].
社団法人日本機械学会の論文
2005-09-08