Related Experiment Video
Updated: Jul 2, 2026
06:42
Extracting the Cochlea from a Human Temporal Bone: A Cadaveric Protocol
Published on: August 18, 2023
Percutaneous versus transcutaneous bone conduction implant system: a feasibility study on a cadaver head
Bo Håkansson1, Måns Eeg-Olofsson, Sabine Reinfeldt
1Department of Signals and Systems, Chalmers University of Technology, Göteborg, Sweden. boh@chalmers.se
Summary
A transcutaneous bone conduction implant system (BCI) shows comparable electroacoustic performance to the percutaneous bone-anchored hearing aid (BAHA) Classic-300. This new BCI offers a potential alternative for hearing loss rehabilitation with intact skin.
Area of Science:
- Audiology
- Biomedical Engineering
- Otolaryngology
Background:
- Percutaneous bone-anchored hearing aids (BAHA) are effective for hearing loss but have drawbacks.
- Transcutaneous bone conduction implant (BCI) systems offer an alternative with intact skin.
Purpose of the Study:
- Compare the electroacoustic performance of BAHA Classic-300 and a full-scale BCI.
- Evaluate BCI as a potential alternative to percutaneous BAHA systems.
Main Methods:
- BCI and BAHA Classic-300 implants were placed in a cadaver head.
- Vibration responses were measured using laser Doppler vibrometry at cochlear promontories.
Main Results:
- BCI demonstrated a higher maximum output level and lower distortion than Classic-300 at the ipsilateral promontorium.
- Contralateral output levels for BCI were lower than Classic-300, except in the 1-2 kHz range.
Conclusions:
- The BCI system exhibits realistic electroacoustic performance.
- BCI presents a viable alternative to traditional percutaneous bone-anchored hearing aids.
