– a bone anchored hearing device
How does the BAHA work?
The BAHA device works by transferring sound directly to the
inner ear (cochlea), using bone conduction.
The device has three main parts - an external sound processor
and abutment, which are attached to a small titanium implant,
which is placed in the bone just behind the ear.
Sound is picked up by the sound processor, which transmits sound
vibrations through the titanium implant to the skull bone. The
sound waves then travel through the patient's skull directly
to the working inner ear.
The BAHA device is placed behind the deaf ear and sound is transferred
across the skull to the cochlea of the patient’s hearing
ear, on the opposite side of their head. A subtle difference
in sound, combined with a minimal time delay allows patients
to determine from which side the sound originates - helping
to restore the sensation of hearing on both sides. Controls
on the clip-on device allow the volume to be varied. A directional
microphone can be attached to the sound processor to further
help 'zoom in' on sound.
The device can be used throughout the day, but needs to be clipped
off for swimming, showers and rough sports.
Who is suitable for the BAHA?
Adults or children over three with significant hearing loss
in one ear and normal, or close to normal, hearing in the other
ear may be suitable for BAHA Once fitted patients must be able
to keep the implant clean or have someone to help them do this
on a daily basis.
If you are completely deaf in one ear and think you could benefit,
talk to your doctor who can refer you to a specialist.
How much will it cost?
In the UK , the surgery and BAHA device is available on the
NHS, although waiting lists and the referral processes vary
between local NHS trusts. The device is also available privately
and on some private health insurance policies, depending on
the terms of the policy. The price of the surgery varies from
one centre to another. For more detailed information and a list
of centres, please contact Entific.
For reimbursement information regarding markets other than the
UK, please refer to www.entific.com or call your local Entific
How long will I have to wait?
At present in the UK, the waiting time varies around the country
for patients suffering with any type of hearing loss.In some
cases they may have to wait up to 18 months for treatment on
the NHS. This is in addition to the waiting time for assessment.
There are many ENT departments throughout the UK that are now
using BAHA to treat SSD.
Advantages of the
of CROS aid
• Better Sound quality than
CROS aid (proven in clinical testing)
• Discreet and can easily be hidden in the hair
• Does not occlude the
other hearing ear
• No wires
• No surgical procedure required
Disadvantages of the Treatments
of CROS aid
• A small surgical procedure is required to insert
the tiny (4mm) titanium implant
Occludes Hearing ear
• Often has an external wire linking the two parts
• Is clearly visible
Link to CROS aid
to Treating Single Sided Deafness
Link to More About Single Sided
to Entific website