Technical design of a new bone conduction implant (BCI) system
Artikel i vetenskaplig tidskrift, 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.

long-term implantation

implanted transducer

Bone conduction implant

bone anchored hearing aid

inductive links

Författare

Hamidreza Taghavi

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Medicinska signaler och system

Bo Håkansson

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Medicinska signaler och system

Sabine Reinfeldt

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Medicinska signaler och system

Måns Eeg-Olofsson

Göteborgs universitet

Karl-Johan Fredén Jansson

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Medicinska signaler och system

Emil Håkansson

Chalmers, Signaler och system, Signalbehandling och medicinsk teknik, Medicinska signaler och system

Bayan Nasri

Chalmers University of Technology

International Journal of Audiology

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

Vol. 54 736-744

Ämneskategorier

Oto-rhino-laryngologi

DOI

10.3109/14992027.2015.1051665

PubMed

26068536