한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제25권6호
  • /
  • Pages.445-450
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  • 2012
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  • 1226-7945(pISSN)
  • /
  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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LC 공진형 압력 센서를 이용한 돼지 경골 동맥의 실시간 혈압 측정

Real-time Blood Pressure Monitoring in Porcine Tibial Artery Using LC Resonant Pressure Sensor

  • 최원석 (한밭대학교 전기공학과) ;
  • 김진태 (한밭대학교 전자제어공학과) ;
  • 정연호 (한밭대학교 전자제어공학과)
  • Choi, Won-Seok (Department of Electrical Engineering, Hanbat National University) ;
  • Kim, Jin-Tae (Department of Electronics and Control Engineering, Hanbat National University) ;
  • Joung, Yeun-Ho (Department of Electronics and Control Engineering, Hanbat National University)
  • 투고 : 2012.04.24
  • 심사 : 2012.05.23
  • 발행 : 2012.06.01
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초록

We have developed an implantable wireless sensor for real time pressure monitoring of blood circulation system. MEMS (micro-electro-mechanical system) technology was adopted as a sensor development method. The sensor is composed of photolithographically patterned inductors and a distributed capacitor in gap between the inductors. A resulting LC resonant system produces its resonant frequency in range of 269 to 284 MHz at 740 mmHg. To read the resonant frequency changed by blood pressure variation, we developed a custom readout system based on a network analyzer functionality. The bench-top testing of the pressure sensors showed good mechanical and electrical functionality. A sensor was implanted into tibial artery of farm pig, and interrogated wirelessly with accurate readings of blood pressure. After 45 days, the sensor's electrical response and histopathology were studied with good frequency reading and biocompatibility.

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