Gesteuertes Druckluftantriebssystem

摘要

The invention is a system for inflating and deflating an intra-aortic balloon through an isolating safety chamber, which utilizes a flexible element to separate the balloon actuating gas from the driving air in a closed balloon circuit. Pressure and vacuum are supplied by separate pressure and vacuum stages, which are driven by the same shaft. The shaft speed is varied to control one of the pressures at a selected value, whereby the other pressure is maintained at a constant value within an allowable band.