![]() ![]() This is where sound can not get through to the inner ear. The nerve endings inside the cochlea detect the vibrations in the cochlea fluid and convert them into nerve impulses which are carried up the hearing nerve to the brain and the patent can ‘hear’ the sound. These vibrations are so tiny that you do not feel them. This makes the fluid inside the cochlea vibrate. The cochlea is part of the skull bone so the cochlea vibrates. The upper jaw is part of the skull so the skull vibrates. The cochlea of the hearing ear The BTE microphone picks up sound on the patients deaf side and send the information by radio waves to the ITM The ITM vibrates the upper teeth which vibrates the upper jaw. The In The Mouth (ITM) vibrating device attached to the upper teeth on the patients hearing side. This image shows the Behind The Ear(BTE) hearing aid on the patients deaf side. When someone speaks on the patients deaf side the sound is transmitted through to the ITM and the vibrations it creates are transmitted through the bone to the good cochlear on the other side and the patient can hear that person speaking. However if the teeth on the good hearing side are not suitable it can be out on the other side. The Soundbite is usually attached to the teeth on the hearing side and the behind the ear hearing aid part will be paced on the deaf side. However if the other ear has normal nerve hearing then the output from a bone conduction device will reach that normal nerve allowing the patient to hear. People who have only one hearing ear often have a lot of problems:Ī normal hearing aid doesn’t work because the inner ear on that side is not working. ![]() Some patients with a MIXED hearing loss 1. Patients with a CONDUCTIVE hearing lossģ. Patients with a ONE SIDED severe to profound nerve hearing loss (= a sensori-neural hearing loss)Ģ. Three groups of people may benefit from a Soundbite:ġ. So you will only hear what the hearing aid part picks up. The sound is picked up by the microphone in the BTE hearing aid part and the information sent wirelessly to the ITM part. It will not pick up sound from inside your mouth. The microphone of the device sits in the opening of the ear hole and so takes advantage of the pinna which helps funnel sound into the ear canal.īoth the BTE and the ITM need to be charged up each night. The Behind The Ear (BTE) hearing aid part is very small and discreet. ![]() A Behind The Ear(BTE) part – like a tiny hearing aid which picks up the sound and then transmits it to the In The Mouth part which then vibrates at the appropriate frequencies to reproduce the sound signal. These teeth have to be in good conditionĢ. The ITM ( = the In The Mouth) part of the device The ITM attaches to the back two upper molar teeth. The upper teeth are strongly secured to the skull – so if you vibrate the teeth the vibrations will spread throughout the skull and find the working inner ear. An In The Mouth(ITM) part – where the vibrating bit is attached to a removable brace which clips on to the back upper teeth. The SOUNDBITE is a device consisting of 2 parts:ġ. It does not matter where the vibrating hearing aid touches the skull(see BONE CONDUCTION DEVICES above) – the vibrations will find their way to a normally working inner ear – where the vibrations will be converted into nerve impulses and take the sound up to the brain where you will ‘hear’ it. This device is just being introduced to the UK. It is a bone conduction device which does not require an operation. ![]()
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