Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/23229
Title: A Capacitive Cochlear Implant Electrode Array Sensing System to Discriminate Fold-Over Pattern
Authors: Hou, L
Du, X
Boulgouris, NV
Hafeez, N
Coulson, C
Irving, R
Begg, P
Brett, P
Keywords: Hearing Preservation;Medical Robotics;Surgical Assistance;Capacitive sensing;K-Nearest Neighbors analysis (KNN)
Issue Date: 18-Aug-2021
Publisher: American Speech Language Hearing Association
Citation: Hou L, Du X, Boulgouris NV, Hafeez N, Coulson C, Irving R, Begg P, Brett P. A Capacitive Cochlear Implant Electrode Array Sensing System to Discriminate Fold-Over Pattern. Journal of Speech, Language, and Hearing Research. 2021 Aug 18:1-2.
Abstract: Purpose During insertion of the cochlear implant electrode array, the tip of the array may fold back on itself and can cause serious complications to patients. This article presents a sensing system for cochlear implantation in a cochlear model. The electrode array fold-over behaviors can be detected by analyzing capacitive information from the array tip. Method Depending on the angle of the array tip against the cochlear inner wall when it enters the cochlear model, different insertion patterns of the electrode array could occur, including smooth insertion, buckling, and fold-over. The insertion force simulating the haptic feedback for surgeons and bipolar capacitance signals during the insertion progress were collected and compared. The Pearson correlation coefficient (PCC) was applied to the collected capacitive signals to discriminate the fold-over pattern. Results Forty-six electrode array insertions were conducted and the deviation of the measured insertion force varies between a range of 20% and 30%. The capacitance values from electrode pair (1, 2) were recorded for analyzing. A threshold for the PCC is set to be 0.94 that can successfully discriminate the fold over insertions from the other two types of insertions, with a success rate of 97.83%. Conclusions Capacitive measurement is an effective method for the detection of faulty insertions and the maximization of the outcome of cochlear implantation. The proposed capacitive sensing system can be used in other tissue implants in vessels, spinal cord, or heart.
URI: http://bura.brunel.ac.uk/handle/2438/23229
DOI: http://dx.doi.org/10.1044/2021_jslhr-21-00067
ISSN: 1092-4388
1558-9102
Appears in Collections:Dept of Mechanical Aerospace and Civil Engineering Research Papers

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