| 摘要 |
<p>An implantable artificial heart pump or heart assist for providing or enhancing a controlled cyclic blood flow through an artery, the pump including a tubular section secured between adjacent ends of a severed artery forming a continuous blood flow passage, and having a plurality of axially spaced but adjacent sleeves encircling this section. The sleeves are sequentially constricted about the tubular section to provide alternately pumping and suction upon the blood flowing through the section, the sleeves being energized by high and low pressure working fluid from an external or implantable power source. Where the power source is an implantable Stirling engine, pressure variations are available from the gas working space, or from an oil pump in the crankcase, or from a compressor driven by the engine.</p> |
