New type of pulsate flow system for artificial heart-lung bypass

In the artificial system of heart-lung bypass, used during the surgery on stopped heart, a com-mon problem-causing device is a roller pump. Inexpensive, simple, yet dependable device is in the process of development, with characteristics maximally approximated to the physiologic parameters of the organism's natural heart. Substituting for the roller pumps, this device consists of two reservoirs. Hermetic reservoirs are interconnected in parallel. They also connect to other parts of the system with blood tubing. A pneumo console for artificial ventricles represents the control system and ensures pulsate blood flow in the bio-models. The developed device provided not only an opportunity to assign frequency of a pulsation, but also an opportunity of control in each output volume. For fulfillment of maximum physiologic blood flow, it is necessary to provide cardio-synchronized mode of perfusion.