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Intracochlear Pressure Changes due to Round Window Opening: A Model Experiment

To preserve residual hearing in cochlea implantation, the electrode design has been refined and an atraumatic insertion of the cochlea electrode has become one aspect of cochlea implant research. The opening of the round window can be assumed to be a contributing factor in an atraumatic concept. The...

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Detalles Bibliográficos
Autores principales: Mittmann, P., Ernst, A., Todt, I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4055591/
https://www.ncbi.nlm.nih.gov/pubmed/24982942
http://dx.doi.org/10.1155/2014/341075
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author Mittmann, P.
Ernst, A.
Todt, I.
author_facet Mittmann, P.
Ernst, A.
Todt, I.
author_sort Mittmann, P.
collection PubMed
description To preserve residual hearing in cochlea implantation, the electrode design has been refined and an atraumatic insertion of the cochlea electrode has become one aspect of cochlea implant research. The opening of the round window can be assumed to be a contributing factor in an atraumatic concept. The aim of our study was to observe intracochlear pressure changes due to different opening conditions of an artificial round window membrane. The experiments were performed in an artificial cochlea model. A round window was simulated with a polythene foil and a pressure sensor was placed in the helicotrema area to monitor intraluminal pressure changes. Openings of the artificial round window membrane were performed using different ways. Opening the artificial round window mechanically showed a biphasic behaviour of pressure change. Laser openings showed a unidirectional pressure change. The lowest pressure changes were observed when opening the artificial round window membrane using a diode laser. The highest pressure changes were seen when using a needle. The openings with the CO(2) laser showed a negative intracochlear pressure and a loss of fluid. In our model experiments, we could prove that the opening of the artificial round window membrane causes various intracochlear pressure changes.
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spelling pubmed-40555912014-06-30 Intracochlear Pressure Changes due to Round Window Opening: A Model Experiment Mittmann, P. Ernst, A. Todt, I. ScientificWorldJournal Research Article To preserve residual hearing in cochlea implantation, the electrode design has been refined and an atraumatic insertion of the cochlea electrode has become one aspect of cochlea implant research. The opening of the round window can be assumed to be a contributing factor in an atraumatic concept. The aim of our study was to observe intracochlear pressure changes due to different opening conditions of an artificial round window membrane. The experiments were performed in an artificial cochlea model. A round window was simulated with a polythene foil and a pressure sensor was placed in the helicotrema area to monitor intraluminal pressure changes. Openings of the artificial round window membrane were performed using different ways. Opening the artificial round window mechanically showed a biphasic behaviour of pressure change. Laser openings showed a unidirectional pressure change. The lowest pressure changes were observed when opening the artificial round window membrane using a diode laser. The highest pressure changes were seen when using a needle. The openings with the CO(2) laser showed a negative intracochlear pressure and a loss of fluid. In our model experiments, we could prove that the opening of the artificial round window membrane causes various intracochlear pressure changes. Hindawi Publishing Corporation 2014 2014-05-22 /pmc/articles/PMC4055591/ /pubmed/24982942 http://dx.doi.org/10.1155/2014/341075 Text en Copyright © 2014 P. Mittmann et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Mittmann, P.
Ernst, A.
Todt, I.
Intracochlear Pressure Changes due to Round Window Opening: A Model Experiment
title Intracochlear Pressure Changes due to Round Window Opening: A Model Experiment
title_full Intracochlear Pressure Changes due to Round Window Opening: A Model Experiment
title_fullStr Intracochlear Pressure Changes due to Round Window Opening: A Model Experiment
title_full_unstemmed Intracochlear Pressure Changes due to Round Window Opening: A Model Experiment
title_short Intracochlear Pressure Changes due to Round Window Opening: A Model Experiment
title_sort intracochlear pressure changes due to round window opening: a model experiment
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4055591/
https://www.ncbi.nlm.nih.gov/pubmed/24982942
http://dx.doi.org/10.1155/2014/341075
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