Show simple item record

dc.contributor.authorBriggs, RJ
dc.contributor.authorTykocinski, M
dc.contributor.authorSaunders, E
dc.contributor.authorHellier, W
dc.contributor.authorDahm, M
dc.contributor.authorPyman, B
dc.contributor.authorClark, GM
dc.identifier.citationBriggs, R. J., Tykocinski, M., Saunders, E., Hellier, W., Dahm, M., Pyman, B. & Clark, G. M. (2001). Surgical implications of perimodiolar cochlear implant electrode design: avoiding intracochlear damage and scala vestibuli insertion.. Cochlear Implants Int, 2 (2), pp.135-149.
dc.descriptionPublisher’s permission requested and denied.
dc.description.abstractOBJECTIVE: To review the mechanisms and nature of intracochlear damage associated with cochlear implant electrode array insertion, in particular, the various perimodiolar electrode designs. Make recommendations regarding surgical techniques for the Nucleus Contour electrode to ensure correct position and minimal insertion trauma. BACKGROUND: The potential advantages of increased modiolar proximity of intracochlear multichannel electrode arrays are a reduction in stimulation thresholds, an increase in dynamic range and more localized neural excitation. This may improve speech perception and reduce power consumption. These advantages may be negated if increased intracochlear damage results from the method used to position the electrodes close to the modiolus. METHOD: A review of the University of Melbourne Department of Otolaryngology experience with temporal bone safety studies using the Nucleus standard straight electrode array and a variety of perimodiolar electrode array designs; comparison with temporal bone insertion studies from other centres and postmortem histopathology studies reported in the literature. Review of our initial clinical experience using the Nucleus Contour electrode array. RESULTS: The nature of intracochlear damage resulting from electrode insertion trauma ranges from minor, localized, spiral ligament tear to diffuse organ of Corti disruption and osseous spiral lamina fracture. The type of damage depends on the mechanical characteristics of the electrode array, the stiffness, curvature and size of the electrode in relation to the scala, and the surgical technique. The narrow, flexible, straight arrays are the least traumatic. Pre-curved or stiffer arrays are associated with an incidence of basilar membrane perforation. The cochleostomy must be correctly sited in relation to the round window to ensure scala tympani insertion. A cochleostomy anterior to the round window rather than inferior may lead to scala media or scala vestibuli insertion. CONCLUSION: Proximity of electrodes to the modiolus can be achieved without intracochlear damage provided the electrode array is a free fit within the scala, of appropriate size and shape, and accurate scala tympani insertion is performed.
dc.publisherInforma UK Limited
dc.relation.ispartofScientific publications, vol.12, 2000-2001, no.1414
dc.subjectcochlear implants
dc.subjectperimodiolar electrode
dc.subjectintracochlear trauma
dc.titleSurgical implications of perimodiolar cochlear implant electrode design: avoiding intracochlear damage and scala vestibuli insertion.
dc.typeJournal Article
melbourne.source.titleCochlear Implants International
melbourne.contributor.authorBriggs, Robert
melbourne.contributor.authorTYKOCINSKI, MICHAEL
melbourne.contributor.authorClark, Graeme
melbourne.contributor.authorPYMAN, BRIAN
melbourne.contributor.authorDAHM, MARKUS
melbourne.accessrightsThis item is currently not available from this repository

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record