[Study of the pumping function of devices for direct mechanical heart massage]

A method permitting to define the efficiency of devices designed for direct cardiomassage on a special hydrodynamic stand is given. The results are presented, obtained with the variation of the main functional parameters which ensure maximum capacity of the device. Factors influencing the cardiomassage efficiency were determined. The devices investigated were claimed to provide the capacity sufficient for entire or partial substitution of the cardiac pumping function.