Weiss W J, Rosenberg G, Snyder A J, Pae W E, Richenbacher W E, Pierce W S
Department of Surgery, Milton S. Hershey Medical Center, Pennsylvania State University, Hershey 17033.
ASAIO Trans. 1989 Jul-Sep;35(3):284-8. doi: 10.1097/00002480-198907000-00035.
A transcutaneous energy transmission system (TETS) has been used to power the Penn State motor driven ventricular assist device in nine calf experiments, for a total of 316 days of cumulative in vivo experience. This is seen as an important step toward a completely implantable ventricular assist system and total artificial heart. The TETS converts an external 12 volt DC source via inductive coupling to a regulated 14 volt output voltage for use by the motor controller. A maximum output power of 70 watts is available. In calf experiments, the TETS output power averaged between 8 and 12 watts. The motor controller was not implanted in these experiments, awaiting further development of the miniaturized electronics. The TETS output was returned percutaneously to the external motor controller, allowing the TETS output to be monitored directly. System efficiency, from DC source to DC output, and including losses in 12 feet of cable, ranged from 55% to 70%, depending upon supply voltage, motor load, and degree of coil coupling. The subcutaneous coil was well tolerated, demonstrating only temporary, mild, superficial induration.
一种经皮能量传输系统（TETS）已用于为宾夕法尼亚州立大学的电机驱动心室辅助装置在九次小牛实验中供电，累积体内实验经验共计316天。这被视为朝着完全可植入的心室辅助系统和全人工心脏迈出的重要一步。TETS通过感应耦合将外部12伏直流电源转换为14伏的稳定输出电压，供电机控制器使用。最大输出功率为70瓦。在小牛实验中，TETS的输出功率平均在8至12瓦之间。在这些实验中，电机控制器未植入，等待小型化电子设备的进一步发展。TETS的输出经皮返回外部电机控制器，从而可以直接监测TETS的输出。从直流电源到直流输出，包括12英尺电缆中的损耗，系统效率在55%至70%之间，具体取决于电源电压、电机负载和线圈耦合程度。皮下线圈耐受性良好，仅表现出暂时、轻微、表面硬结。
