Title :
A pump control index for reducing suction and backflow effect caused by the portable centrifugal blood pump
Author :
Lin, Y.H. ; Chou, N.-K. ; Chen, Y.-Y. ; Jan, G.J.
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
In this experiment, the centrifugal Taita No.1 left ventricular-assist device was implanted in a 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 the pump for reducing suction and backflow effects.
Keywords :
artificial organs; biocontrol; cardiology; flow control; haemodynamics; pumps; Taita No.1 centrifugal blood pump; aortic valve; backflow effect; calf; cardiac cycle; constant voltage; left ventricular-assist device; mitral valve; open-loop control method; optimal applied voltage; optimal pump control index; portable centrifugal blood pump; pump control index; pump inflow flow; pump outflow pressure; suction reduction; Animals; Biomedical monitoring; Blood; DC motors; Open loop systems; Optimal control; Valves; Velocity control; Virtual manufacturing; Voltage control;
Conference_Titel :
Engineering in Medicine and Biology Society, 2001. Proceedings of the 23rd Annual International Conference of the IEEE
Print_ISBN :
0-7803-7211-5
DOI :
10.1109/IEMBS.2001.1018966
