[Experimental studies on the problem of improving the myocardial blood circulation in an intraoperatively resuscitated heart]. / Experimentelle Untersuchungen zur Frage der Verbesserung der Herzmuskeldurchblutung eines intraoperativ reanimierten Herzens.

A pumping system for supporting an intraoperatively failured heart is presented. This system consists of a bell-shaped receptacle for the heart and a pump with a working volume of 49 ml and a working pressure of 220 Torr. The pumping power is transmitted to the heart by means of an external pneumatic pressure line. The efficacy of the pump in the high pressure system amounted to 20-30 per cent. An effective coronary perfusion in case of a cardiac failure is guaranteed by a venous underpressure pump of this pumping system. A favourable influence was also observed in case of the low pressure system.