Comparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation

Abstract Acoustic hearing aids generate amplified sound in the ear canal, and they are the standard of care for patients with mild to moderate sensorineural hearing loss. However, because of their limited frequency bandwidth, gain, and feedback, there is substantial room for improvement. Active midd...

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Autores principales:	Dong Ho Shin, Jong Hoon Kim, Peter Gottlieb, Yona Vaisbuch, Sunil Puria, Jin-Ho Cho, Ki Woong Seong
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f80af661e114470da5f353333ba6d545
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spelling	oai:doaj.org-article:f80af661e114470da5f353333ba6d5452021-12-02T16:45:41ZComparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation10.1038/s41598-021-95456-y2045-2322https://doaj.org/article/f80af661e114470da5f353333ba6d5452021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95456-yhttps://doaj.org/toc/2045-2322Abstract Acoustic hearing aids generate amplified sound in the ear canal, and they are the standard of care for patients with mild to moderate sensorineural hearing loss. However, because of their limited frequency bandwidth, gain, and feedback, there is substantial room for improvement. Active middle ear implants, which directly vibrate the middle ear and cochlea, are an alternative approach to conventional acoustic hearing aids. They provide an opportunity to improve sound quality and speech understanding with amplification rehabilitation. For floating-mass type and direct-rod type (DRT) middle ear transducers, a differential floating-mass transducer (DFMT) and a tri-coil bellows transducer (TCBT), respectively, were fabricated to measure the output characteristics in four human temporal bones. Both were fabricated to have similar output forces per unit input and were placed in four human temporal bones to measure their output performances. The TCBT resulted in higher output than did the DFMT throughout the audible frequency range, and the output was more prominent at lower frequency ranges. In this study, we showed that DRT was a more effective method for round window stimulation. Because of its frequency characteristics and vibration efficiency, this implantation method can be utilized as a driving solution for middle ear implants.Dong Ho ShinJong Hoon KimPeter GottliebYona VaisbuchSunil PuriaJin-Ho ChoKi Woong SeongNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dong Ho Shin Jong Hoon Kim Peter Gottlieb Yona Vaisbuch Sunil Puria Jin-Ho Cho Ki Woong Seong Comparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation
description	Abstract Acoustic hearing aids generate amplified sound in the ear canal, and they are the standard of care for patients with mild to moderate sensorineural hearing loss. However, because of their limited frequency bandwidth, gain, and feedback, there is substantial room for improvement. Active middle ear implants, which directly vibrate the middle ear and cochlea, are an alternative approach to conventional acoustic hearing aids. They provide an opportunity to improve sound quality and speech understanding with amplification rehabilitation. For floating-mass type and direct-rod type (DRT) middle ear transducers, a differential floating-mass transducer (DFMT) and a tri-coil bellows transducer (TCBT), respectively, were fabricated to measure the output characteristics in four human temporal bones. Both were fabricated to have similar output forces per unit input and were placed in four human temporal bones to measure their output performances. The TCBT resulted in higher output than did the DFMT throughout the audible frequency range, and the output was more prominent at lower frequency ranges. In this study, we showed that DRT was a more effective method for round window stimulation. Because of its frequency characteristics and vibration efficiency, this implantation method can be utilized as a driving solution for middle ear implants.
format	article
author	Dong Ho Shin Jong Hoon Kim Peter Gottlieb Yona Vaisbuch Sunil Puria Jin-Ho Cho Ki Woong Seong
author_facet	Dong Ho Shin Jong Hoon Kim Peter Gottlieb Yona Vaisbuch Sunil Puria Jin-Ho Cho Ki Woong Seong
author_sort	Dong Ho Shin
title	Comparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation
title_short	Comparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation
title_full	Comparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation
title_fullStr	Comparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation
title_full_unstemmed	Comparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation
title_sort	comparative study of efficiency and characteristics of fmt and drt installed in human cadavers for round-window stimulation
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f80af661e114470da5f353333ba6d545
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Comparative study of efficiency and characteristics of FMT and DRT installed in human cadavers for round-window stimulation

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