The cochlear implant is an electronic
device that provides a sense of sound to a
person who is profoundly deaf or severely
hard of hearing.
The Baha is a surgically
implantable system for treatment of hearing loss that
works through direct bone conduction.
Bone-Anchored Hearing Aid is based on bone conduction.
It is primarily suited to people who cannot wear 'in the
ear' or 'behind the ear' hearing aids.