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KMID : 0372919930140020163
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Journal of Biomedical Engineering Research
1993 Volume.14 No. 2 p.163 ~ p.168
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In Vitro Test of Adult-Sized Pneumatic Type Ventricular Assist Device
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김상현
장병철/김원기/김남현/조범구
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Abstract
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We developed a ventricular assist device (VAD) to be used as a bridge to heart transplantation or a circulatory assist device for patients with end-stage heart disease or poor myocardial function after cardiac surgery. It is a pneumatic and diaphragm-type VAD and its stroke volume is 90 cc. The upper housing and diaphragm is made of a segmented polyurethane and the lower back plate is made of a polycarbonate. Two CarbomedicsR mehanical valves are used as inlet and outlet valves. It was tested in vitro and the cardiac output of the VAD was 7 L/min at a heart rate of 70 bpm. The line pressure from a pressure transducer inserted in the pneumatic line was recorded and compared with the ideal pressure tracing.
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