中文摘要：

轴流式人工心脏泵的驱动系统是其能够正常运转的基础,目前外置式大间隙磁场驱动方式是很多学者的研究方向。但是外磁场驱动由于存在间隙要求大、传动效率低、携带不方便等缺点还停留在实验研究的阶段,不能适应心脏泵的市场需求。文中所设计的微型驱动电机系统很好地解决了外磁驱动的这些缺点,该方案是以无刷直流电机工作原理为基础,通过缠绕在定子上的线圈产生的磁场驱动安装在旋转叶轮内部的永磁转子,从而能使心脏泵正常工作。该设计方案整体结构简洁,与血泵组成泵机一体式结构提高了装置的可植入性。

英文摘要：

The external magnetic driving system of the axial blood pump has the disadvantages of large gap, low transmission efficiency, carrying it inconveniently. This paper proposes a macro driving solution that can avoid these disadvantages. Based on the working theory of the brushless DC motor, the blood pump can run normally depending on the permanent magnet in its inner, which is driven by the magnet field from the coil wrapped around the motor stator.The solution is more concise, the pump and driving motor are in combination.