A novel bone conduction implant (BCI): engineering aspects and pre-clinical studies.
Journal article, 2010

Percutaneous bone anchored hearing aids (BAHA) are today an important rehabilitation alternative for patients suffering from conductive or mixed hearing loss. Despite their success they are associated with drawbacks such as skin infections, accidental or spontaneous loss of the bone implant, and patient refusal for treatment due to stigma. A novel bone conduction implant (BCI) system has been proposed as an alternative to the BAHA system because it leaves the skin intact. Such a BCI system has now been developed and the encapsulated transducer uses a non-screw attachment to a hollow recess of the lateral portion of the temporal bone. The aim of this study is to describe the basic engineering principals and some preclinical results obtained with the new BCI system. Laser Doppler vibrometer measurements on three cadaver heads show that the new BCI system produces 0-10 dB higher maximum output acceleration level at the ipsilateral promontory relative to conventional ear-level BAHA at speech frequencies. At the contralateral promontory the maximum output acceleration level was considerably lower for the BCI than for the BAHA.

Male

sound

head

Prosthesis Design

Bone conduction

Female

Aged

methods

Prosthesis Implantation

anchored hearing-aid

Humans

implanted transducer

BAHA

Aged

Hearing Aids

80 and over

Bone Conduction

Author

Bo Håkansson

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Biomedical Signals and Systems

Sabine Reinfeldt

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Biomedical Signals and Systems

Måns Eeg-Olofsson

University of Gothenburg

Per Östli

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Biomedical Signals and Systems

Hamidreza Taghavi

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Biomedical Signals and Systems

Johannes N Adler

Chalmers, Signals and Systems

John Gabrielsson

Chalmers, Signals and Systems

Stefan Stenfelt

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Biomedical Signals and Systems

Gösta Granström

University of Gothenburg

International Journal of Audiology

1499-2027 (ISSN) 1708-8186 (eISSN)

Vol. 49 3 203-15

Subject Categories

Medical Laboratory and Measurements Technologies

Otorhinolaryngology

DOI

10.3109/14992020903264462

PubMed

20105095

More information

Created

10/7/2017