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DOI: 10.1055/s-0038-1640653
Intracochlear shearing force during electrode insertion
Introduction:
Electrode insertion into the cochlea lead to significant pressure changes inside the cochlea with assumed effects on the functionality of the cochlea in terms of residual hearing. Fluid dynamics underline the importance of pressure changes close to inserted things.
The aim of the study was to observe the occurence of pressure changes during electrode insertion close to the cochlea implant electrode indicating shearing forces.
Methods:
The experiments were performed in different artificial cochlear models. A micro fibre pressure sensor was attached to a cochlear implant electrode at three different positions of the electrode and inserted at different speeds.
Results:
We observed significant effects on pressure changes in terms of position, speed and electrode design.
Conclusion:
In our model experiments intracochlear pressure changes indicating shearing force during cochlear implant electrode insertion are influenced by position and speed and are electrode design dependent.
Publication History
Publication Date:
18 April 2018 (online)
© 2018. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).
Georg Thieme Verlag KG
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