411 循環補助用小型磁気浮上摩擦血液ポンプの研究開発(OS5-(4)オーガナイズドセッション《ライフサポートにおける工学技術》)

概要

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We propose new treatment method for mild heart failure patients with thin and economical artificial heart. We have developed a micro maglev artificial heart which is sufficiently-thin to implant under the thorax muscle layer. The micro maglev artificial heart consists of a levitated impeller of regenerative pump and the radial type magnetically suspended motor. We designed the regenerative blood pump whose impeller's diameter is 48 mm. We did computational fluid dynamics analysis to optimize the thickness of impeller and the number of its vanes. The result of the analysis shows that the best thickness and the number of vanes are 4 mm and 40 vanes. We made a pump test model based on the result of the analysis, and demonstrated enough ability to treat mild artificial heart that the flow rate and pressure head are 2 L/min and 108 mmHg with a rotating speed 1600 rpm.
一般社団法人日本機械学会の論文
2011-08-26