Implantable fiber-optic sensing system
30 April 2018
|In-vitro and in-vivo measurement of the animal’s middle ear acoustical response by partially implantable fiber-optic sensing system.|
|The main obstacle in realization of a totally implantable hearing aid is a lack of reliable implantable microphone. In this paper we have described a potentially miniature fiber-optic vibrometer based on a modified Michelson interferometer, designed to serve as a middle-ear microphone for totally implantable cochlear- or middle-ear hearing aids. A model of the sensing system was used for in-vitro and in-vivo investigation of acoustical response of sheep’s middle-ear ossicles.
The histological examination of temporal bones of cadaver animals and the intensity of in-vivo optical signal demonstrated that the aiming of the sensing fiber to the target has been preserved for five months after the implantation.
|Djinović Z, Pavelka R, Tomić M, Sprinzl G, Plenk H, Losert U, Bergmeister H, Plasenzotti R.||Biosens Bioelectron. 2018 Apr 30;103:176-181. doi: 10.1016/j.bios.2017.12.015. Epub 2017 Dec 10.|
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