磁力駆動型人工心臓 ―その開発と性能評価―

田中 弘之; 舟波 誠; 高場 利博; S.g. KOVACS; L.e. ONDROVIC; 饗場 正宏; P.p. MCKEOWN; R.g. CONNAR

doi:10.11392/jsao1972.20.663

MAGNETICALLY ACTUATED LEFT VENTRICULAR ASSIST DEVICE

H. TANAKA, M. FUNAMI, T. TAKABA, S.g. KOVACS, L.e. ONDROVIC, M. AIBA, P.p. MCKEOWN, R.g. CONNAR

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Keywords: magnetically actuated left ventricular assist device (MALVAD), electromagnet, artificial heart

JOURNAL FREE ACCESS

1991 Volume 20 Issue 3 Pages 663-665

DOI https://doi.org/10.11392/jsao1972.20.663

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Abstract

A magnetically actuated left ventricular assist device which has small size and simple mechanism has been developed. This device consists of 4-main subassemblies. 1) actuator (size 32.5cm³, weight 312g). 2) magnetic pusher-plate diaphragms. 3) pump-chamber with valve parts. 4) interface mount. Pumping force is generated by an electromagnetic actuator whose (magnetic flux) core is centered on the axis of the rare-earth permanent magnet, which in turn is centrally mounted on the pump pusher-plate diaphragm. This device's hydraulic power is 7.8- 11.2 watts. Using Mock loop model, this pump generates 3.2-5.8 1/min out put with 120mmHg afterload and 8-12mmHg preload when heart rate was changed from 80 to 120 bpm.

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