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A bone-anchored hearing aid (BAHA) [2] is a type of hearing aid based on bone conduction. It is primarily suited for people who have conductive hearing losses , unilateral hearing loss , single-sided deafness and people with mixed hearing losses who cannot otherwise wear 'in the ear' or 'behind the ear' hearing aids.
The microphone of the hearing aid picks up sound signals from the environment. The signal is then optimized and transmitted to the transducer, which generates vibrations. Depending on the specific bone conduction hearing aid system, the vibrations are either sent directly through the skull bone, or through the skin towards the inner ear.
The Baha system is a bone conduction hearing system designed, developed and marketed by Cochlear Bone Anchored Solutions. It is a semi-implantable, under the skin bone conduction hearing device coupled to the skull by a titanium fixture. [1] The system transfers sound to the inner ear through the bone. Over 100,000 people have had the system ...
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The amount of benefit a hearing aid delivers depends in large part on the quality of its fitting. Almost all hearing aids in use in the US are digital hearing aids, as analog aids are phased out. [3] Devices similar to hearing aids include the osseointegrated auditory prosthesis (formerly called the bone-anchored hearing aid) and cochlear implant.
If absence or deformation of ear structures cannot be corrected, or if the patient declines surgery, hearing aids which amplify sounds are a possible treatment option. [3] Bone conduction hearing aids are useful as these deliver sound directly, through bone, to the cochlea or organ of hearing bypassing the pathology. These can be on a soft or ...
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