An Umbo Microphone for Fully-Implantable Assistive Hearing Devices

被引：2
|
作者：
Cary, Benjamin G. [1 ,2 ]
Zhang, John Z. [3 ]
McHugh, Christopher, I [4 ,5 ]
Kymissis, Ioannis [6 ]
Olson, Elizabeth S. [7 ]
Nakajima, Hideko Heidi [4 ,5 ]
Lang, Jeffrey H. [8 ]
机构：
[1] MIT, Cambridge, MA 02139 USA
[2] Univ Calif Berkeley, Dept Elect Engn & Comp Sci, Berkeley, CA 94703 USA
[3] MIT, Dept Mech Engn, Cambridge, MA 02139 USA
[4] Massachusetts Eye & Ear Infirm, Boston, MA 02114 USA
[5] Harvard Med Sch, Boston, MA 02114 USA
[6] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA
[7] Columbia Univ, Dept Biomed Engn & Auditory Biophys, New York, NY 10027 USA
[8] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA
来源：
IEEE SENSORS JOURNAL | 2022年 / 22卷 / 22期
关键词：
Microphones; Sensors; Auditory system; Ear; Cochlear implants; Electrodes; Boundary conditions; Biomedical sensors; cochlear implants; displacement transducers; hearing aids; implantable microphones; piezoelectric sensor; THERMAL AGITATION; SENSOR;
D O I：
10.1109/JSEN.2022.3209966
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This article presents an implantable microphone for sensing the displacement of the umbo, the end of the malleus where it attaches to the center tip of the cone-shaped tympanic membrane. The sensor comprises a piezoelectric polyvinylidene fluoride (PVDF) film with copper-nickel electrodes suspended across a brass cylinder. The cylinder is oriented so that the umbo pushes on the film center, causing a static and acoustically driven dynamic film displacement. An amplifier filters the resulting piezoelectric charge to produce an output signal. The sensor enables the full implantation of assistive hearing devices, which can restore hearing without inhibiting the user's lifestyle, while enabling better sound localization in noisy environments.
引用
收藏
页码：22161 / 22168
页数：8
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