OBJECTIVE:To design a permanent impeller leftventricularassistdevice(LVAD) using permanent magnet bearing and fluid film bearing, and compare with the traditional electromagnetic levitated devices.
Meanwhile, the information on the history, indication, effects and complications of leftventricularassistdevice are also introduced in this article.
并对左心辅助装置的历史、适应证、疗效、并发症等作了介绍。
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Conclusion it is beneficial to use leftventricularassistdevice in different rate of flow in condition of acute left heart failure, but with best effect in the median and high flow rate.