Title :
Implantable artificial heart system and new actuator control by power electronic system
Author :
Nishimura, Toshi H. ; Ding, Lu
Author_Institution :
Dept. of Electron. & Electr. Eng., Oita Univ., Japan
Abstract :
An implantable artificial heart system with a DC-DC converter using a high-frequency resonant inverter as the method of energy transmission from the outside of the body to the interior of the body is presented. An external battery, a high-frequency transformer, and a pulse-width modulation (PWM) gate driver are outside the body. The secondary winding of the high-frequency transformer, a rectifier smoothing circuit, an output voltage regulation circuit, and an internal battery are inside the body. To show the control method of the implantable artificial heart system, the circulatory model is presented. The circulatory model, a 16-b computer with information on carbon dioxide density in the blood, is evaluated using a mock circulatory system. The results obtained from the mock circulatory system and an experiment with carbon dioxide inhalation performed on six test subjects agree.<>
Keywords :
artificial organs; cardiology; digital simulation; electric actuators; invertors; medical computing; power convertors; prosthetic power supplies; pulse width modulation; 16 bit; DC-DC converter; actuator control; circulatory model; implantable artificial heart system; output voltage regulation circuit; power electronic system; pulse-width modulation; rectifier smoothing circuit; resonant inverter; transformer; Actuators; Artificial biological organs; Biomedical computing; Biomedical power supplies; Cardiovascular system; Inverters; Power conversion; Pulse width modulation; Simulation;
Conference_Titel :
Systems Engineering, 1989., IEEE International Conference on
Conference_Location :
Fairborn, OH, USA
DOI :
10.1109/ICSYSE.1989.48675
