Bone Anchored Hearing Aid (BAHA)

What is BAHA?

A BAHA (Bone Anchored Hearing Aid) is an auditory implant and sound processor. The Baha is a surgically implantable system for treatment of hearing loss that works through direct bone conduction. It has been used since 1977,it is as a treatment for conductive and mixed hearing losses.


Who can be helped by BAHA?

BAHA is a treatment option for people with moderate to severe hearing loss who don't benefit from normal (air conduction) hearing aids. The commonest reasons for considering BAHA are

1. chronic ear infection - when wearing normal hearing aids makes the infection worse.

2. The fluid inside the cochlea picks up the vibrations and carries them to thousands of tiny hair cells.

3. The small ear bones vibrate along with the eardrum, transferring the sound across the middle ear to the cochlea.

4. Hair cells convert mechanical vibrations into electrical impulses. The electric impulses are sent along the auditory

     nerve to the brain. The hearing centre of the brain interprets the impulses as sound.


How does a Baha work?

 The Baha consists of three parts:

  • A titanium implant
  • An external abutment and
  • A sound processor.




Who is a Candidate for the Baha System?

Chronic Ear Infection
Treatment for hearing losses with the Baha is suitable for people with a conductive or mixed hearing impairment caused by a chronic infection of the middle or outer ear that results in a persistent and unpleasant discharge. The first goal, of course, is to manage the infection. In rare cases, chronic infections fail to respond to treatment, but are determined to be non-threatening. In other cases, infections respond to treatment, but recur with use of a conventional in-the-canal hearing aid. When a hearing aid is placed in a susceptible ear canal, a chronic or recurrent infection may be aggravated by the obstruction of the canal and the resulting excessive humidity and lack of drainage. In these cases, the Baha may be a good solution for hearing rehabilitation. The Baha sound processor transmits sound directly to the hearing nerve without involving the ear canal. With Baha there is no occlusion of the ear canal to aggravate infection. A Baha sound processor offers sound quality at least as good as a conventional air conduction device. For those who need high levels of amplification, problems related to feedback and discomfort are usually resolved.

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