Implantation of the Melbourne/Cochlear multiple-electrode extracochlear prosthesis
AuthorFranz, Burkhard K.-H. G.; Kuzma, Janusz A.; Lehnhardt, Ernst; Clark, Graeme M.; Patrick, James F.; Laszig, Roland
Source TitleAnnals of Otology, Rhinology & Laryngology
PublisherAnnals Publishing Co.
Document TypeJournal Article
CitationsFranz, B. K. G., Kuzma, J. A., Lehnhardt, E., Clark, G. M., Patrick, J. F., & Laszig, R. (1989). Implantation of the Melbourne/Cochlear multiple-electrode extracochlear prosthesis. Annals of Otology, Rhinology & Laryngology, August, 98(8), 591-596.
Access StatusOpen Access
This is a publisher’s version of an article published in Annals of Otology, Rhinology & Laryngology published by Annals Publishing Company. This version is reproduced with permission from Annals Publishing Company. http://www.annals.com/
The Melbourne/Cochlear multiple-electrode extracochlear implant is designed for deaf patients who are unsuited to multiple-electrode intracochlear implantation. The implant consists of a receiver-stimulator package connected via a lead wire assembly to six individual stimulating electrodes. There is a choice of two alternative surgical procedures, both of which are via a combined middle ear approach using anterior and posterior tympanotomies. Four active electrodes shaped into compressible platinum-iridium soft-balls are fed through the mastoid cavity and across the facial recess, and placed into cavities that are made over the cochlear turns that project to the medial wall of the middle ear. One hard-ball active electrode is placed into the round window niche. One hard-ball reference electrode is placed into the hypotympanum. An additional electrode wrapped around the lead wire assembly can be used as an alternative reference electrode. A specially designed insertion needle facilitates the placement and the fixation of the soft-ball electrodes.
Keywordsotolaryngology; hearing loss; multiple-electrode extracochlear prosthesis
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