Pump Control Index for Reducing Suction and Backflow Effect Caused by the Portable Centrifugal Blood Pump

摘要

In this experiment, the Taita No. 1 centrifugal blood pump was implanted on the calf. The blood pump was driven by constant voltage with the open-loop control method. The pump inflow flow and pump outflow pressure were recorded and analyzed synchronously. According to the status of aortic valve and mitral valve, the cardiac cycle was divided into four stages. The flow in each stage was calculated and an optimal pump control index was obtained. The index suggests an optimal applied voltage of pump for reducing suction and backflow effect. Keywords- blood pump control, suction, backflow, LYAD.