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Bone conduction implants for amplification: comparison of results
D A Hough1, P Matthews, J V Hough
1Hough Ear Institute, Oklahoma City, OK 73112, USA.
Ear, Nose, & Throat Journal
|February 12, 1998
Summary
The Xomed Audiant Bone Conductor and NobleBiocare bone-anchored hearing aid (BAHA) offer similar amplification for hearing loss. Neither device provides superior gain for patients with significant sensorineural hearing loss.
Area of Science:
- Audiology
- Biomedical Engineering
- Otolaryngology
Background:
- Bone-anchored hearing aids (BAHA) are used for hearing loss.
- Percutaneous coupling may offer greater energy transduction than transcutaneous coupling.
Purpose of the Study:
- Compare amplification efficacy of Xomed Audiant Bone Conductor and NobleBiocare HC200 BAHA.
- Evaluate potential benefits of percutaneous vs. transcutaneous coupling for hearing loss.
Main Methods:
- Retrospective comparison of aided sound-field thresholds to bone-conduction thresholds.
- Analysis focused on speech frequencies.
Main Results:
- Both BAHA and Audiant devices amplified sound to approximate preoperative bone-conduction thresholds.
- No statistically significant difference in amplification was found between the two devices.
Conclusions:
- The Audiant device provides comparable gain to the HC200 BAHA through speech frequencies.
- Both devices effectively amplify for conductive hearing loss.
- Neither device offers superior gain for patients with substantial sensorineural hearing loss.