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Related Experiment Videos

Percutaneous vs. transcutaneous transducers for hearing by direct bone conduction.

B Håkansson1, A Tjellström, P Carlsson

  • 1Department of Applied Electronics, Chalmers University of Technology, Göteborg, Sweden.

Otolaryngology--Head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery
|April 1, 1990
PubMed
Summary

Bone conduction hearing aids improve hearing for chronic ear disorders. Percutaneous systems, like the Nobelpharma Auditory System HC 200, outperform transcutaneous systems due to better power and output, making them a preferred choice.

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Area of Science:

  • Otorhinolaryngology
  • Biomedical Engineering
  • Audiology

Background:

  • Chronic middle ear and ear canal disorders significantly impair hearing.
  • Existing hearing solutions require improvement for affected patients.
  • Bone conduction hearing systems offer a potential solution for hearing restoration.

Purpose of the Study:

  • To compare the performance of two bone conduction hearing systems: a percutaneous (Nobelpharma Auditory System HC 200) and a transcutaneous (Audiant device).
  • To identify factors contributing to performance differences between percutaneous and transcutaneous bone conduction transducers.
  • To guide future development of bone conduction hearing systems.

Main Methods:

  • Development and presentation of the Nobelpharma Auditory System HC 200 (bone-anchored hearing aid) utilizing a percutaneous transducer.

Related Experiment Videos

  • Description of the Audiant device, a transcutaneous bone conduction transducer.
  • Comprehensive audiologic assessments to evaluate and compare the performance of both systems.

    • Main Results:

    • Significant performance differences were observed between the percutaneous and transcutaneous bone conduction systems.
    • Larger gaps in transcutaneous systems were found to negatively impact power consumption, maximum output, and second harmonic distortion.
    • Transcutaneous transducer suspension properties were not adequately controlled, posing potential issues.

    Conclusions:

    • Percutaneous bone conduction transducer systems demonstrate superior performance characteristics compared to transcutaneous systems.
    • The Nobelpharma Auditory System HC 200, with its percutaneous design, is a promising option for patients with chronic hearing disorders.
    • Future research and development efforts should focus on optimizing percutaneous transducer systems due to their advantages and lower complication risk.