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Related Experiment Videos

The output characteristics of an implanted bone conduction prosthesis.

S Gatehouse1, G G Browning

  • 1MRC Institute of Hearing Research (Scottish Section), Royal Infirmary, Glasgow, UK.

Clinical Otolaryngology and Allied Sciences
|December 1, 1990
PubMed
Summary

This study investigated frequency-specific guidelines for the Audiant bone conduction device. Results show the ear-level amplifier is best for patients with normal bone conduction thresholds below 1000 Hz.

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Response to Drs Carey et al.

Clinical otolaryngology : official journal of ENT-UK ; official journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery·2013

Area of Science:

  • Audiology
  • Biomedical Engineering
  • Medical Devices

Background:

  • Current patient selection guidelines for the Audiant bone conduction device lack experimental validation.
  • Theoretical models suggest frequency-specific guidelines are necessary for optimal patient selection.

Observation:

  • Maximum output levels of the Audiant device were measured using both body-worn and ear-level amplifiers on two subjects.
  • Measurements were taken across a range of frequencies to assess device performance.

Findings:

  • The body-worn amplifier demonstrated maximum output from 15 dB HL (250 Hz) to 60 dB HL (6000 Hz).
  • The ear-level amplifier showed maximum output from 6 dB HL (250 Hz) to 42 dB HL (6000 Hz).
  • These findings indicate the ear-level amplifier's limitation to patients with normal bone conduction thresholds at or below 1000 Hz.

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Implications:

  • The study highlights the need for frequency-specific patient selection criteria for bone conduction devices.
  • These findings can inform the development of more precise guidelines for Audiant device implantation.
  • Further research is warranted to validate these experimental findings in clinical settings.