Bone Anchored Hearing Aid
The Bone Anchored Hearing Aid (BAHA)is a surgically implanted system which worksthrough direct bone transmission. This means that the implant itself vibrates within the skull and inner ear. This stimulates the nerve fibers of the inner ear and allows hearing. The BAHA is best suited for people who have conductive hearing loss like chronic ear infections, obstruction of the ear canal, and single sided deafness.
The BAHA is made up of three parts: a titanium implant, a small external portion, and a sound processer. By having this set up the sound is able to bypass the external auditory canal and middle ear and enter into the inner ear.
This means that people who have issues with the structure of the ear, or people with chronic ear infections, will not have to have anything obstructing the opening of the ear.
Also for those who have single sided deafness the apparatus is placed on the side with the non-hearing ear which then transfers sound through the bone which stimulates the cochlea of the normal hearing ear.
This transmission of sound from the bad side to the normal ear results in a sensation of hearing from the deaf ear.This benefits the hard of hearing person because stereo sound is achieved. Stereo sound causes a better understanding of speech and also causes the hard of hearing person to be able distinguishing between background noise and the noise they need to focus on.