Direct tympanic membrane excitation via vibrationally conductive assembly
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United States of America Patent
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Oct 24, 2000
Grant Date -
N/A
app pub date -
May 27, 1998
filing date -
May 27, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device to be worn in the ear of a subject provides a direct vibrational drive to the tympanic membrane through a vibrationally conductive assembly which couples vibrations from a vibratory transducer positioned within the ear canal proximal to the tympanic membrane. In one embodiment of the invention, the device is a hearing aid positioned inconspicuously deep within the ear canal. The vibrationally conductive assembly is removably attached to the umbo area of the tympanic membrane. The vibrationally conductive assembly is designed to conduct vibrations in the audible frequency range while absorbing static forces caused by device placement and ear canal movement attributable to jaw movements of the wearer, including speaking, eating, drinking, chewing, yawning, and so forth. The unique coupling characteristics of the vibrationally conductive assembly allow for a highly efficient transfer of vibrations in the audible frequency range to the tympanic membrane without exerting damaging forces on the tympanic membrane. The energy efficiency and non-occlusive design features of a hearing aid embodiment of the invention allow for long term use within the ear canal.
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