A MEMS Condenser Microphone-Based Intracochlear Acoustic Receiver.
IEEE Trans Biomed Eng
; 64(10): 2431-2438, 2017 10.
Article
em En
| MEDLINE
| ID: mdl-28029613
ABSTRACT
GOAL Intracochlear sound pressure (ICSP) measurements are limited by the small dimensions of the human inner ear and the requirements imposed by the liquid medium. A robust intracochlear acoustic receiver (ICAR) for repeated use with a simple data acquisition system that provides the required high sensitivity and small dimensions does not yet exist. The work described in this report aims to fill this gap and presents a new microelectromechanical systems (MEMS) condenser microphone (CMIC)-based ICAR concept suitable for ICSP measurements in human temporal bones. METHODS:
The ICAR head consisted of a passive protective diaphragm (PD) sealing the MEMS CMIC against the liquid medium, enabling insertion into the inner ear. The components of the MEMS CMIC-based ICAR were expressed by a lumped element model (LEM) and compared to the performance of successfully fabricated ICARs.RESULTS:
Good agreement was achieved between the LEM and the measurements with different sizes of the PD. The ICSP measurements in a human cadaver temporal bone yielded data in agreement with the literature.CONCLUSION:
Our results confirm that the presented MEMS CMIC-based ICAR is a promising technology for measuring ICSP in human temporal bones in the audible frequency range.SIGNIFICANCE:
A sensor for evaluation of the biomechanical hearing process by quantification of ICSP is presented. The concept has potential as an acoustic receiver in totally implantable cochlear implants.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Espectrografia do Som
/
Transdutores
/
Implantes Cocleares
/
Cóclea
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Sistemas Microeletromecânicos
/
Manometria
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
IEEE Trans Biomed Eng
Ano de publicação:
2017
Tipo de documento:
Article