cochlear implant
Pronunciation: KOKE-lee-ar IM-plant
Surgically implanted electronic device that bypasses damaged hair cells to directly stimulate auditory nerve fibers.
Full Definition
A cochlear implant is a sophisticated electronic prosthetic device that provides sound perception for individuals with severe to profound sensorineural hearing loss who receive limited benefit from hearing aids. The system consists of an external sound processor and an internal implant with electrodes surgically placed in the cochlea. The device converts acoustic signals into electrical impulses that directly stimulate auditory nerve fibers, bypassing damaged hair cells. Candidacy requires comprehensive audiological and medical evaluation.
Usage
Usage note: Abbreviate as CI in subsequent references. Always hyphenate when used as adjective: 'cochlear-implant surgery'.
In Context
- "The patient was evaluated for cochlear implant candidacy following unsuccessful hearing aid trial." — Candidacy assessment
- "Post-cochlear implant audiological rehabilitation focuses on auditory training and device optimization." — Rehabilitation planning