Hearing assistance device sensing otovibratory or otoacoustic emissions evoked by middle ear vibrations
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United States of America Patent
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Jan 29, 2002
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N/A
app pub date -
Feb 4, 2000
filing date -
Feb 5, 1999
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Expired
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Abstract
A total middle ear implantable (T-MEI) or partial middle ear implantable (PMEI) hearing assistance system provides a transient middle ear mechanical vibration stimulus, and senses emissions from the cochlea. The sensed cochlear emissions include mechanical vibrations ('otovibratory emissions') and sound pressure waves ('otoacoustic emissions'). Based on the sensed emissions, diagnostic information is provided to the physician at an external programmer, allowing easier positioning and coupling of an electrical-to-mechanical output transducer. Diagnosis of auditory system or hearing assistance system malfunctions is effectively implemented using the data communicated from the implantable hearing assistance device. Signal processing parameters are adjusted based on the sensed cochlear emissions for improved hearing assistance. Otovibratory emission sensing is likely more sensitive than otoacoustic emissions, providing improved audiometric screening data.
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