Indications of hearing levels for cartilage conduction hearing aids: Evaluation using 2 cm<sup>3</sup> coupler and an artificial mastoid

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  • 軟骨伝導補聴器の適応聴力―2 cm<sup>3</sup>カプラ，人工マストイドによる出力の評価―

Description

<p>The indications for cartilage conduction (CC) hearing aids have not been clearly determined. In this study, we evaluated CC hearing aids using standard methods for air and bone conduction (AC and BC) hearing aids, after which we estimated the indications for CC hearing aids. The two evaluation methods were as follows: 1) the vibration emitted from the transducer was translated into sound and the output level was measured using a 2 cm3 copular (as with AC hearing aids), and 2) the vibration emitted from the transducer was evaluated using an artificial mastoid (as with BC hearing aids). In CC, the transmission pathway to the cochlea depends on ear structure. When the sound is transmitted via the eardrum, the output level should be evaluated using the AC method. In this case, CC hearing aids could provide adequate amplification for a mild to moderate hearing loss. Furthermore, CC hearing aids can be used in individuals with severe hearing loss when the audiogram shows loss of low to middle tones. In other ears, the output level should be evaluated using the BC method. Here, CC hearing aids can be effectively used in ears with normal BC thresholds.</p>

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Details 詳細情報について

  • CRID
    1391412326426144256
  • NII Article ID
    130007939230
  • DOI
    10.11374/shonijibi.41.34
  • ISSN
    21865957
    09195858
  • Text Lang
    ja
  • Article Type
    journal article
  • Data Source
    • JaLC
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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