Development of a wearable pneumatic artificial heart system

研制了气动心室辅助装置（PVAD）和全人工心脏（PTAH）。带2个电池的驱动器的尺寸和重量为250 x110 x210 mm和4.3 kg。在溢流型循环模拟和动物测试中检查了PVAD和PTAH的性能。VAD在循环模拟测试中实现了范围从3.4到6.7 L/min的平均泵流量和范围从8.0到19.7 W的平均电力消耗。在循环模拟中，电池的最长放电时间为7小时38分钟。用小牛作慢性动物试验，检测VAD。小牛存活了28天，一般状况良好。旁路流量和电功率消耗保持在4.1+/-0.4 L/min和13.3+/-0.4 W。在使用小牛的急性动物试验中评价了使用2个驱动器的PTAH。泵的平均流量范围为3.9至5.4 L/min，平均功耗范围为5.3至17.6 W。

A pneumatic ventricular assist device (PVAD) and total artificial heart (PTAH) were developed. The size and weight of the driver with the 2 battery are 250x110 x210 mm and 4.3 kg. The performance of the PVAD and PTAH were examined in an overflow type circulation mock and animal tests. The VAD achieved the mean pump flow ranging from 3.4 to 6.7 L/min and the mean electric power consumption ranging from 8.0 to 19.7 W in the circulation mock test. The longest electric discharge of the battery of 7 hours and 38 minutes was possible in the circulation mock. The VAD was also examiend in the chronic animal test using calf. The calf survived for 28 days in good general condition. The bypass flow and the electric power consumption were maintained at 4.1+/-0.4 L/min and 13.3+/-0.4 W. The PTAH using the 2 driver was evaluated in the acute animal test using calf. The mean pump flow ranging from 3.9 to 5.4 L/min and the mean electric power consumption ranging from 5.3 to 17.6 W were achieved.