Abstract
HYPOTHESIS:: The current hybrid electrode can be inserted without trauma to the temporal bone and, after insertion, assumes a position within the scala tympani near the outer cochlear wall just beneath the basilar membrane. BACKGROUND:: Conservation of residual hearing after cochlear implant electrode insertion requires a special insertion technique and an atraumatic short electrode. This allows electroacoustic stimulation in ears with significant residual hearing. METHODS:: Human cadaveric temporal bones were implanted with soft surgical technique under fluoroscopic observation. Dehydrated and resin-impregnated bones are dissected. Real-time electrode insertion behavior and electrode position were evaluated. The bones are examined for evidence of insertion-related trauma. RESULTS:: No gross trauma was observed in the implanted bones, and the electrode dynamics evaluation revealed smooth scala tympani insertions. CONCLUSION:: Atraumatic insertion of the 10-mm hybrid electrode can be accomplished using an appropriate cochleostomy and insertion technique.
Original language | English (US) |
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Pages (from-to) | 482-488 |
Number of pages | 7 |
Journal | Otology and Neurotology |
Volume | 29 |
Issue number | 4 |
DOIs | |
State | Published - Jun 2008 |
Keywords
- Cochlear implant
- Electroacoustic hearing
- Hybrid electrode
- Temporal bone