Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Implementation of a Transcutaneous Power Transmission System for Implantable Medical Devices by Resonant Frequency Tracking Method

주파수 추적 방식에 의한 이식형 의료기기용 무선전력전달 장치 구현

  • Lim, H.G. (Graduate School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Lee, J.W. (Graduate School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Kim, D.W. (Graduate School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Lee, J.H. (Department of Biomedical Engineering, Kyungpook National University Hospital) ;
  • Seong, K.W. (Advanced Research Center for Recovery of Human Sensibility, Kyungpook National University) ;
  • Kim, M.N. (Department of Biomedical Engineering, School of Medicine, Kyungpook National University) ;
  • Cho, J.H. (Advanced Research Center for Recovery of Human Sensibility, Kyungpook National University)
  • 임형규 (경북대학교 대학원 전자전기컴퓨터학부) ;
  • 이장우 (경북대학교 대학원 전자전기컴퓨터학부) ;
  • 김동욱 (경북대학교 대학원 전자전기컴퓨터학부) ;
  • 이정현 (경북대학교병원 의공학과) ;
  • 성기웅 (경북대학교 첨단감각기능회복장치연구센터) ;
  • 김명남 (경북대학교 의학전문대학원 의공학교실) ;
  • 조진호 (경북대학교 첨단감각기능회복장치연구센터)
  • Received : 2010.06.21
  • Accepted : 2010.09.06
  • Published : 2010.10.31
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Abstract

Recently, many implantable medical devices have been developed and manufactured in many countries. In these devices, generally, energy is supplied by a transcutaneous method to avoid the skin penetration due to the power wires. As the most transcutaneous power transmission methods, the electromagnetic coupling between two coils and resonance at a specific frequency has been used widely. However, in case of a transcutaneous power transmitter with a fixed switching frequency to drive an electromagnetic coil, inefficient power transmission and thermal damage by the undesirable current variation may occur, because the electromagnetic coupling state between a primary coil and a secondary coil is very sensitive to skin thickness of each applied position and by person. In order to overcome these defects, a transcutaneous power transmitter of which operating frequency can be automatically tracked into the resonance frequency at each environment has been designed and implemented. Through the results of experiments for different coil surroundings, we have been demonstrated that the implemented transcutaneous power transmitter can track automatically into a varied resonance frequency according to arbitrary skin thickness change.

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References

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