Design of a centrifugal blood pump with magnetic suspension.
Design of a centrifugal blood pump with magnetic suspension.
复制标题
磁悬浮离心血泵的设计。
作者：
Takashi Yamane;T. Ikeda;T. Orita;T. Tsutsui;T. Jikuya
本文提出了一种新的概念血泵，其叶轮由永磁体和机械枢轴悬空，没有密封和滚珠轴承。血泵的主要目的是应用于植入式人工心脏。样机为离心式，直径为50mm的四叶半开式叶轮。由于这种机制没有密封或滚珠轴承，因此可能导致血细胞变性的流动停滞或热量产生预计很小。2号样机的性能测试结果在泵扬程和效率方面令人满意。径向悬浮磁体和磁耦合是稳定的。因此，目前的机制已被证实是一种适用于植入式人工心脏的候选机制。
A new concept blood pump, whose impeller is suspended by permanent magnets and a mechanical pivot without seals or ball bearings, is presented in this paper. The primary aim of the blood pump is an application to implantable artificial hearts. The prototype model is of a centrifugal type with a four-vaned semiopen impeller 50 mm in diameter. Since this mechanism has no seals or ball bearings, flow stagnation or heat generation that might cause blood cell denaturation is expected to be small. The results of performance testing for the prototype model 2 were satisfactory regarding pump head and efficiency. The radial-suspension magnets and the magnetic coupling were stable. As a result, the present mechanism has been verified to be a candidate applicable to implantable artificial hearts.