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Related Experiment Videos

An implantable bone conduction hearing device.

R Johnson1, M Meikle, J Vernon

  • 1Oregon Hearing Research Center, Oregon Health Sciences University, Portland.

The American Journal of Otology
|December 1, 1988
PubMed
Summary
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A novel implantable hearing device offers high-fidelity sound, especially at high frequencies. Patients report improved speech understanding, though further development is needed for the at-the-ear processor.

Area of Science:

  • Otorhinolaryngology
  • Biomedical Engineering
  • Audiology

Background:

  • Conventional hearing aids have limitations.
  • Bone conduction hearing aids offer an alternative for certain hearing loss types.
  • Implantable hearing devices represent an advancement in auditory prosthetics.

Purpose of the Study:

  • To introduce a new implantable hearing device.
  • To evaluate its performance in animal and human studies.
  • To compare it with existing bone conduction hearing aids.

Main Methods:

  • Development and implantation of a novel device transmitting acoustical signals via electromagnetism.
  • Animal research to assess sound fidelity across the audio range.
  • Human trials with both body and at-the-ear (ATE) processors, comparing with conventional bone conduction aids.

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Main Results:

  • The device demonstrated high-fidelity sound reproduction, particularly in high frequencies.
  • Over 350 patients were successfully implanted.
  • Patients reported excellent sound quality and enhanced conversational speech understanding.
  • The at-the-ear (ATE) processor showed approximately 10 dB less output than body processors.

Conclusions:

  • The implantable hearing device is a viable option for hearing restoration.
  • It offers significant advantages in sound quality and speech comprehension.
  • Further research is ongoing to optimize the ATE processor's power output and address minor issues.