About twenty years ago, and before there was no solution to congenital deafness and deafness in adults and most of these patients had to remain deaf and disabled for life. Fortunately by the development of technology hearing implants were invented by which the deaf can regain hearing.
Cochlear implant, cross-cuts the damaged auditory ciliary cells and converts the environment sounds into electric signals and transfers these signals to auditory nerve.
Cochlear implant device includes the following:
1)A small electronic device that is surgically implanted under the skin behind the ear.
2)An external speech processor that is often put on a belt or in a pocket or behind the ear.
3)A hand pieced microphone placed behind the ear outside the body to absorb sound.
This surgical procedure and the devices are available here in Mashhad.