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KMID : 1137820100310050395
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의공학회지
2010 Volume.31 No. 5 p.395 ~ p.400
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Development and Estimation of a Wireless Controlled Implantable Electric-stimulator for the Blood Pressure Regulation
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Kim Yoo-Seok
Park Sung-Min
Shim Eun-Bo
Choi Seong-Wook
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Abstract
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Hypertension is the chronic disease that the 16% of total population are suffering, and it needs to be studied to find alternative treatment because of the tolerance and side effect of medications that may bother some patients. in this paper, we verified practicality of implantable electrical stimulator that can readily change stimulus magnitude and frequency. And this device is possible to stimulate baroreflex or parasympathetic nerve. Therefore we performed in vitro tests and animal experiment for device’s operating conditions. This device consist of implantable electrical stimulator and extracorporeal control/monitoring system. Stimulator was designed to make 1Hz~100Hz pulses and it can change continuous or periodic pulse train type. And this device can control stimulator’s function and monitor stimulator’s status and patients’ blood pressure at exterior of body using ZigBee module as wireless telecommunication. We verified that stimulator have error rate under 5% at 50mm depth of organs and, stimulator makes high-efficiency energy with closer position of two electrodes. Also we can confirm the performance of device that decreasing blood pressure and heart rate of a rat by electrical stimulation.
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KEYWORD
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electrical stimulator, baroreflex, blood pressure regulation, wireless sginal transmit
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