전자공학회논문지B (Journal of the Korean Institute of Telematics and Electronics B)
- 제32B권3호
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- Pages.38-47
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- 1995
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- 1016-135X(pISSN)
완전 이식형 인공심장의 심박출량 자동 제어 알고리즘 개발에 관한 연구
Development of an Automatic Cardiac Output Control Algorithm for the Total Artificial Heart
초록
A new automatic cardiac output control algorithm for the motor-driven electromechanical total artificial heart(TAH) was developed based on the motor current waveform analysis without using any extra transducer. The basic control requirements of artificial heart can be described in terms of three features : preload sensitivity, afterload insensitivity, and balanced ventricular outputs. In the previous studies, many transducers were utilized to obtain informations of hemodynamic states for the automatic cardiac output control, But such automatic control systems with sensors have had reliability problems. We proposed a new sensorless automatic cardiac output control algorithm providing adequate cardiac output to the time-varying physiological demand without causing right atrial collapse, which is one of the critical problem in an active-filling type device. In-vitro tests were performed on a mock circulation system to evaluate the performance of the developed algorithm and the results show that the new algorithm satisfied the basic control requirements on the cardiac output response and the possibility of application of the developed algorithm to in vivo experiments.
키워드