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作者以绵羊实验对美国纽约JarvikResearch,Inc生产的Jarvik2000型微型左室辅助泵的功能进行研究。这一心室内辅助循环装置是一轴流泵,直径1.8厘米,长5厘米,重45克。每搏排血量12毫升,在16000～18000转/分的转速和平均主动脉压10.7kPa的阻力下,可产生3～6升/分的血流量。泵的转速可经脉冲宽度调节型无刷直流电控
The authors studied the function of a Jarvik 2000 miniature left ventricular assist pump manufactured by Jarvik Research, Inc. of New York, New York, using sheep experiments. This intraventricular auxiliary circulatory device is an axial flow pump, 1.8 cm in diameter, 5 cm long and weighs 45 grams. Blood volume per stroke of 12 ml, 16000 ~ 18000 rev / min speed and average aortic pressure of 10.7kPa resistance, can produce 3 to 6 liters / min of blood flow. Pump speed can be pulse width modulation type brushless DC control