Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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A Study on Frequency Characteristics According to the Output Transmission Method of Round Window Driving Middle Ear Implants

정원창 구동형 인공중이의 출력 전달 방식에 따른 주파수 특성 연구

  • Seong, KiWoong (Department of Biomedical Engineering, Kyungpook National University Hospital) ;
  • Shin, DongHo (Department of Electrical Engineering, College of IT, Kyungpook National University) ;
  • Na, SungDae (Department of Biomedical Engineering, Kyungpook National University Hospital) ;
  • Lee, JyungHyun (Department of Biomedical Engineering, School of Medicine, Kyungpook National University) ;
  • Kim, MyoungNam (Department of Biomedical Engineering, School of Medicine, Kyungpook National University) ;
  • Cho, Jin-Ho (Biomedical Engineering Institute, Kyungpook National University Hospital)
  • 성기웅 (경북대학교병원 의공학과) ;
  • 신동호 (경북대학교 IT대학 전자공학과) ;
  • 나승대 (경북대학교병원 의공학과) ;
  • 이정현 (경북대학교 의과대학 의공학교실) ;
  • 김명남 (경북대학교 의과대학 의공학교실) ;
  • 조진호 (경북대학교 의공학연구소)
  • Received : 2018.04.17
  • Accepted : 2018.10.10
  • Published : 2018.10.31
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Abstract

In this paper, we investigated the efficiency according to the output transmission method of the round window driving type AMEIs (active middle ear implants) through the cadaveric experiment. For the experiment, we fabricated DRT (direct rod transducer) and FMT (floating mass transducer) type vibrational transducers based on our previous studies and conducted their output characteristics were measured. TCBT (tri-coil bellows transducer) and DFMT (differential floating mass transducer) were implemented with the same driving force and electrical characteristics as one of DRT and FMT, respectively. In the experiment using three human temporal bone, normal stapes vibration was measured with 1 Pa in front of tympanic membrane, and then was compared with each output of transducers. From the comparison, the DRT type vibration transducer was superior in overall energy transfer efficiency, especially in the low frequency range. There was no difference in implantation difficulty between the two transducers. The results of this study suggest that the DRT type vibrational transducer is more efficient and needs further study to overcome the low frequency degradation in round window approaching with FMT.

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References

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