CI is a small complex electronic device or implantable hearing aid to help a profoundly deaf or severely hard of hearing person.
It does not restore normal hearing but instead, it can give a deaf person a useful representation of sounds in the environment and help them to understand speech.
It can be a choice for people who have severe hearing loss from inner-ear damage and can’t hear well with hearing aids.
A cochlear implant sends sounds past the damaged part of the ear straight to the hearing nerve, called the cochlear nerve. For most people with hearing loss that involves the inner ear, the cochlear nerve works. But the nerve endings, called hair cells, in the part of the inner ear called the cochlea, are damaged.
Cochlear implants use a sound processor that fits behind the ear and pulls in sounds from outside the ear. It sends sound signals to a receiver that’s been placed under the skin behind the ear.