A bone-anchored hearing aid (BAHA) is a surgically implanted hearing device designed for people with hearing loss. It is a well-established hearing solution for patients suffering from conductive hearing loss, mixed hearing loss, and single-sided deafness.
A BAHA is based on the principle of direct bone conduction. Therefore, in patients using a BAHA, the environmental sound vibrations are directly transmitted to the inner ear bypassing the outer and middle ear.
There are two types of BAHA: Transcutaneous (under the skin) and Percutaneous (through the skin). Transcutaneous BAHA is usually offered to patients with purely conductive hearing loss and normal inner ear hearing. Percutaneous implants are typically offered to patients with conductive hearing loss or mixed hearing losses. It can also provide a hearing rehabilitation solution in single sided deafness to reroute the sound to the intact cochlear.
BAHA can be offered to children older than 4 years. Prior to 4 a soft band device is worn which is a bone conduction hearing aid on a headband.