Technical design of a new bone conduction implant (BCI) system
Journal article, 2015

Objective: The objective of this study is to describe the technical design and verify the technical performance of a new bone conduction implant (BCI) system. Design: The BCI consists of an external audio processor and an implanted unit called the bridging bone conductor. These two units use an inductive link to communicate with each other through the intact skin in order to drive an implanted transducer. Study sample: In this study, the design of the full BCI system has been described and verified on a skull simulator and on real patients. Results: It was found that the maximum output force (peak 107 dB re 1 N) of the BCI is robust for skin thickness range of 2-8 mm and that the total harmonic distortion is below 8% in the speech frequency range for 70 dB input sound pressure level. The current consumption is 7.5 mA, which corresponds to 5-7 days use with a single battery. Conclusions: This study shows that the BCI is a robust design that gives a sufficiently high output and an excellent sound quality for the hearing rehabilitation of indicated patients.

implanted transducer

Bone conduction implant

long-term implantation

bone anchored hearing aid

inductive links

Author

Hamidreza Taghavi

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

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

Karl-Johan Fredén Jansson

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

Emil Håkansson

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

Bayan Nasri

Chalmers, Computer Science and Engineering (Chalmers), Computing Science (Chalmers)

International Journal of Audiology

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

Vol. 54 10 736-744

Subject Categories

Otorhinolaryngology

DOI

10.3109/14992027.2015.1051665

PubMed

26068536

More information

Latest update

11/23/2018