Trinkl J, Mesana T, Havlik P, Mitsui N, Demunck J L, Dion I, Candelon B, Montiès J R
Teracor Sarl, Toulon, France.
ASAIO Trans. 1991 Jul-Sep;37(3):M208-10.
When ventricular assistance is achieved with a volumetric pump driven by an electric actuator, overpumping can cause venous collapse. To prevent this problem, pump speed must be monitored and controlled. The authors developed a regulatory system based on the current intensity signal from the electric motor. This signal is processed and compared with predicted values calculated according to a mathematical model at the beginning of each ejection phase. If a difference is detected, pump speed is adequately adjusted. The great advantage of this system is elimination of the need for an implantable pressure sensor. It requires a simple and ubiquitous electronic component, i.e., a resistor, that can be easily integrated into the motor control circuit and does not require calibration.
当通过由电动执行器驱动的容积泵实现心室辅助时，过度泵送会导致静脉塌陷。为防止此问题，必须监测和控制泵速。作者开发了一种基于来自电动机的电流强度信号的调节系统。该信号经过处理后与每个射血阶段开始时根据数学模型计算出的预测值进行比较。如果检测到差异，泵速将得到适当调整。该系统的一大优势是无需植入式压力传感器。它需要一个简单且普遍存在的电子元件，即电阻器，该电阻器可轻松集成到电机控制电路中且无需校准。
