Indications for Use & Fitting Range
TransEar is intended for individuals with single-sided deafness (SSD) or unaidable unilateral hearing loss, with SSD being defined as an ear having one or more of the following characteristics:
* Profound sensorineural hearing loss of such magnitude that there is no perceived benefit from an air conduction hearing aid coupled to the same ear.
* A hearing loss greater than 50 dB HL at frequencies of 500 Hz - 4000 Hz with speech recognition ability less than 50% when presented in quiet, at a 40 dB sensation level relative to the user’s speech reception threshold.
* A hearing loss greater than 50 dB HL at frequencies of 500 Hz - 4000 Hz with a small dynamic range, for loudness less than 20 dB for amplified speech, which makes the use of an air conduction hearing aid intolerable to the user.
The “better” cochlea should have pure tone air conduction thresholds 30 dB HL or better for the test frequencies of 500, 1000, 2000 Hz and 60 dB HL or better at 3000 Hz.|
For individuals with a “better ear” that exhibits a mixed or conductive hearing loss, bone conduction thresholds should be 30 dB HL or better for the test frequencies of 500, 1000, 2000 Hz and 60 dB HL or better at 3000 Hz.
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