The TransEar® Hearing Device

TransEar® Hearing Device

The TransEar® hearing device is used to treat profound hearing loss in one ear (single-sided deafness or SSD). The TransEar® looks like a conventional BTE (Behind-the Ear) hearing aid, but instead of simply amplifying sound, the TransEar® relies on bone conduction to transmit the sound to the better ear.

Transear Transear Side View

TransEar® Hearing Device

How the TransEar® works:

Just like a conventional hearing aid, a custom shell is made to fit in the ear canal. However, unlike a conventional aid that would simply amplify the sound, TransEar® has a miniature oscillator embedded in the shell. The oscillator is positioned in the shell in such a way that it makes contact with the bony portion of the ear canal. When sound is "received" on the side of the dead ear, it's converted to mechanical energy that drives the oscillator. The signals generated by the TransEar® are then transferred via the bone of the skull to the inner ear (cochlea) in the opposite ear. Patients who wear the TransEar® perceive that they are hearing from the deaf ear.

Will TransEar® work for me?

TransEar®'s effectiveness depends on a specific threshold of hearing in the "good" ear. The staff of the Ear Institute of Chicago will evaluate a candidate's hearing in both ears to determine whether someone will benefit from the TransEar® hearing device. Each candidate's physiology and medical conditions may also be factors in the fitting.

Transear Indications Graph

Audiological fitting range for the TransEar®

Fitting and Programming

Once it is determined that someone is a candidate for the TransEar®, one of the audiologists of the Ear Institute of Chicago will take two, deep canal impressions of the ear to be fitted. These impressions are used to make a custom shell for the ear canal. A miniature oscillator is imbedded inside the shell, in a position where the oscillator will make good contact with the bony portion of the ear canal.

At a subsequent visit, the BTE processor will be programmed. The program is based on various listening environments that can be simulated in our hearing aid fitting rooms. Additionally, slight modifications to the fit of the shell may be made based on feedback from the patient. The TransEar® will feel very snug, because a tight fit is necessary for good bone conduction. (It is a tighter fit than a traditional air conduction hearing aid, but it should not be painful.)

For more information regarding the TransEar® hearing device, please visit: