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Force Application During Cochlear Implant Insertion: An Analysis for Improvement of Surgeon Technique

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3 Author(s)
Todd, C.A. ; Univ. of Wollongong, Wollongong ; Naghdy, F. ; Svehla, M.J.

Highly invasive surgical procedures, such as the implantation of a prosthetic device, require correct force delivery to achieve desirable outcomes and minimize trauma induced during the operation. Improvement in surgeon technique can reduce the chances of excessive force application and lead to optimal placement of the electrode array. The fundamental factors that affect the degree of success for cochlear implant recipients are identified through empirical methods. Insertion studies are performed to assess force administration and electrode trajectories during implantations of the Nucleusreg 24 Contourtrade and Nucleusreg 24 Contour Advancetrade electrodes into a synthetic model of the human Scala Tympani, using associated methods. Results confirm that the advance off- stylet insertion of the soft-tipped contour advance electrode gives an overall reduction in insertion force. Analysis of force delivery and electrode positioning during cochlear implantation can help identify and control key factors for improvement of insertion method. Based on the findings, suggestions are made to enhance surgeon technique.

Published in:

Biomedical Engineering, IEEE Transactions on  (Volume:54 ,  Issue: 7 )

Date of Publication:

July 2007

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