Diegel P D, Mussivand T, Holfert J W, Nahon D, Miller J, Maclean G K, Santerre J P, Bearnson G B, Juretich J, Hansen A C
Institute for Biomedical Engineering, University of Utah, Salt Lake City, 84103.
ASAIO Trans. 1991 Jul-Sep;37(3):M206-7.
A 64 ml (effective stroke volume) in vitro electrohydraulic ventricular assist device (VAD) prototype has been built. The energy converter is an axial flow pump driven by a brushless direct current (DC) motor. Systole begins as silicone oil is pumped from the volume displacement chamber (VDC) into the ventricle, displacing the flexing diaphragm separating the oil and the blood. In diastole, the motor reverses, providing active filling by pumping oil from the ventricle into the VDC. The surface mount electronic internal controller provides motor commutator, energy management, telemetry, and physiologic control functions. Energy is supplied externally by either a 12 V DC power supply or a 12 V DC rechargeable battery and is transmitted through the skin by a transcutaneous energy transformer (TET). Energy can also be supplied by a 12 V DC rechargeable internal battery. Bidirectional infrared telemetry is used to transmit information between the internal and external controllers.
已制造出一款64毫升（有效冲程容积）的体外电动液压心室辅助装置（VAD）原型。能量转换器是由无刷直流（DC）电机驱动的轴流泵。当硅油从容积置换腔（VDC）被泵入心室时，收缩期开始，这会使分隔油和血液的柔性隔膜发生位移。在舒张期，电机反转，通过将油从心室泵入VDC来实现主动充盈。表面贴装电子内部控制器提供电机换向、能量管理、遥测和生理控制功能。能量由外部的12伏直流电源或12伏直流可充电电池提供，并通过经皮能量传输器（TET）透过皮肤进行传输。能量也可由12伏直流可充电内部电池提供。双向红外遥测用于在内部和外部控制器之间传输信息。
