Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Design and Fabrication of an Implantable Microphone for Reduction of Skin Damping Effect through FEA Simulation

피부에 의한 이득 감쇠를 줄이기 위한 FEA 시뮬레이션 기반의 이식형 마이크로폰 설계 및 구현

  • Han, Ji-Hun (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Kim, Min-Woo (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Kim, Dong-Wook (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Seong, Ki-Woong (School of Electrical Engineering and Computer Science, Kyungpook National University) ;
  • Cho, Sung-Mok (Department of Information Security, Tongmyong University) ;
  • Park, Il-Yong (Advanced Research Center for Recovery of Human Sensibility, Kyungpook National University) ;
  • Cho, Jin-Ho (School of Electrical Engineering and Computer Science, Kyungpook National University)
  • 한지훈 (경북대학교 대학원 전자공학과) ;
  • 김민우 (경북대학교 대학원 전자공학과) ;
  • 김동욱 (경북대학교 대학원 전자공학과) ;
  • 성기웅 (경북대학교 대학원 전자공학과) ;
  • 조성목 (동명대학교 정보보호학과) ;
  • 박일용 (경북대학교 첨단 감각기능 회복장치 연구센터) ;
  • 조진호 (경북대학교 대학원 전자공학과)
  • Published : 2008.02.29
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Abstract

Nowadays, implantable hearing aids have been developed to solve the problems of conventional hearing aids. In case of fully implantable hearing aids, an implantable microphone is necessary to receive sound signal beneath the skin. Normally, an implantable microphone has poor frequency response characteristics in high frequency bands of acoustic signal due to the high frequency attenuation effect of skin after implantation to human body. In this paper, the implantable microphone is designed to reduce the high frequency attenuation effect of a skin by putting its resonance frequency at the attenuated range through a finite element analysis (FEA) simulation. The designed implantable microphone through the simulated results has been fabricated by manufacturing process using bio-compatible materials. By the several in-vitro experiments with pig skin, it has been verified that the designed implantable microphone has a resonance frequency around the starting part of the attenuated range and reduces the attenuation effect.

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References

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