Woodard J C, Rock S M, Portner P M
Novacor Division, Baxter Healthcare Corporation, Oakland, California 94621.
ASAIO Trans. 1991 Jul-Sep;37(3):M210-1.
With the advent of chronically implanted left ventricular assist systems, new adaptive control algorithms are being developed to allow automatic device control under a variety of hemodynamic conditions. An electromechanical pump is described that accurately mimics ventricular function. A pusher-plate sac pump with tri-leaflet valves is coupled to a high-speed linear motor. Pump chamber volume and pressure are constrained to follow the time-varying elastance model of ventricular function by use of a microprocessor feedback loop.
随着长期植入式左心室辅助系统的出现，新的自适应控制算法正在被开发，以实现各种血流动力学条件下的设备自动控制。本文描述了一种能精确模拟心室功能的电动机械泵。一种带有三叶瓣膜的推板囊式泵与高速线性电机相连。通过微处理器反馈回路，泵腔容积和压力被限制为遵循心室功能的时变弹性模型。
