Development of Rotary Type Artificial Heart Pump using a Self-Bearing Rotary Motor

研制出一种新型自轴承电机。它具有旋转电机和磁轴承的双重功能。本研究将自轴承电机应用于旋转血泵。轴向式自轴承电机具有单一控制度、结构简单等优点。然而，它需要长轴。径向型可主动控制两个径向轴。但扁泵很容易开发。首先为心脏泵设计了十二极盘式电机，为心脏泵提供了足够的HQ特性。但它是一个相当大的。其次，制作了适合植入的外转子设计。最后对电机进行了更新设计，以提高电机的工作效率。这个泵对血泵很好。离心泵也采用轴向电机，可以利用旋转泵的宽侧面积。因此，它具有气隙大的优点，更有利于血泵的加热。自我感知也被研究。1型差动变压器被认为适合用于血泵。但由于其可靠性较低，无法在实际泵中使用。进一步的工作将继续改进心脏泵和自我感知技术。

New type of self-bearing motor has been developed. It has both functions of rotary motor and magnetic bearing. In this research, self-bearing motor is applied to the rotary blood pump. Axial type self-bearing motor has the merit of using one control degree and is simple. However, it requires long shaft. Radial rype one can control two redial axies actively. But the flat pump is developed easily.First twelve pole disc motor was designed to the heart pump which produced enough HQ characteristics for the heart pump. But it is a quite big. Next the outer rotor design is fabricated which is quite small for implantation. Finally the motor design is renewed to give the high efficiency. This pump is quite good for blood pump.Axial motor is also adopted to the centrifugal pump which can use the wide side area of the rotary pump. Hence it has the merit of wide airgap which is better for blood pump searing.Self-sensing is also investigated. Differential transformer type one is considered adequate for blood pump. But we could not use in the practical pump due to its low reliability. Further work is continuing to improve both heart pump and self-sensing technique.