Is this device based on the power ITE transcranial CROS idea?
No. A power ITE (or BTE) is inherently inefficient for bone conduction, because much of the energy from the high sound pressure levels is lost during the conversion of acoustic energy to force energy. There are a number of potential side effects from using air conduction aids for bone conduction, among which are feedback and vestibular issues in some patients. By utilizing direct bone conduction, TransEar is a more efficient instrument. The primary difference from other such direct bone conduction devices, including headbands and the surgical BAHA procedure, is that TransEar uses the osseous portion of the ear canal to directly conduct oscillations from its vibration transducer through the skull to the good ear. The distance is therefore shorter, and the efficiency of the force transfer is limited only by the very thin (0.2 mm) layer of skin in the portion of the canal just past the second bend. This 3/8″ is TransEar’s “sweet spot,” and that is why we require impressions that extend as
