|
KMID : 1137820080290010059
|
|
의공학회지
2008 Volume.29 No. 1 p.59 ~ p.65
|
|
|
Design and Fabrication of an Implantable Microphone for Reduction of Skin Damping Effect through FEA Simulation
|
|
Han Ji-Hun
Kim Min-Woo
Kim Dong-Wook
Seong Ki-Woong
Cho Sung-Mok
Park Il-Yong
Cho Jin-Ho
|
|
|
Abstract
|
|
|
|
Nowadays, implantable hearing aids have been developed to solve the problems of conventional hearing aids. In case of fully implantable hearing aids, an implantable microphone is necessary to receive sound signal beneath the skin. Normally, an implantable microphone has poor frequency response characteristics in high frequency bands of acoustic signal due to the high frequency attenuation effect of skin after implantation to human body. In this paper, the implantable microphone is designed to reduce the high frequency attenuation effect of a skin by putting its resonance frequency at the attenuated range through a finite element analysis (FEA) simulation. The designed implantable microphone through the simulated results has been fabricated by manufacturing process using bio-compatible materials. By the several in-vitro experiments with pig skin, it has been verified that the designed implantable microphone has a resonance frequency around the starting part of the attenuated range and reduces the attenuation effect.
|
|
|
KEYWORD
|
|
|
fully implantable hearing aids, Implantable microphone, damping effect, FEA
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
 
|