Bone conduction hearing aids

Hearing aids of this type are intended for people who are unable to wear conventional hearing aids, or who have conductive hearing loss.
Like conventional ‘air conduction’ hearing aids, aids of this type amplify sounds. However, unlike conventional hearing aids, the amplified sound is passed not into your ear canal but instead, by vibration, through the bones in your skull. 
 
 
              
             A Bone Conduction hearing aid (Image © RNID)
 
 
These vibrations are transmitted directly to the cochlea – completely by-passing the outer ear and middle ear.
Generally, hearing through the bones is not as efficient as hearing through air conduction – so conventional air conduction hearing aids are recommended wherever possible.
 
 
Advantages:
 
• Suitable for those who are unable to wear conventional hearing aids or who have conductive hearing loss
 
 
Disadvantages:
 
• Reduced localisation performance: sounds transmitted through the bone reach the cochlea of both ears at roughly the same time.  Click opens a new windowhere for more information about sound localisation.

• Not as discreet as conventional air conduction hearing aids as the small vibrator unit is clearly visible against the skull.

 
Baha® is a special type of bone conduction hearing aid that needs to be surgically implanted. Read more about Baha® hearing aids .

 

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