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Bone Conduction Implant

What is a Bone Conduction Implant?

A bone conduction implant is a surgically implanted hearing device. It is designed to produce useful hearing sensations by transmitting sounds through the skull bone behind the ear to the inner ear using vibration. Bone conduction implants are commonly known as Bone Anchored Hearing Aids (BAHA). Bone conduction implants are designed for people who, for medical reasons, can’t wear conventional hearing aids, or for people who have a hearing loss in one ear.

Image of back of man's head with a Bone Conduction Implant or BAHA

                                                                      Image courtesy of Cochlear Ltd

What is in a Bone Conduction Implant System?

The Baha® bone conduction implant systems manufactured by Cochlear Limited consist of three main components:
The externally worn sound processor, an abutment (or alternatively a magnet) that connects the sound processor to the fixture and a titanium fixture, or implant, that is placed into the skull bone behind the ear.

Diagram showing Cochlear Ltd’s Baha® Connect system and Cochlear Ltd’s Baha® Attract system

How hearing works with a Bone Conduction implant

Diagram of the inner ear, showing how a Bone Conduction implant works

                               Image courtesy of Cochlear Ltd

  1. The sound processor picks up sound via the microphone.
  2. Sound is converted into vibrations which are sent to the bone integrated implant.
  3. Bone naturally conducts the vibrations to the inner ear (cochlea). There, the vibrations are naturally transformed into signals that are sent to the brain where they are perceived as sound.