Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems
Patent
1997-02-21
1999-12-07
Schaetzle, Kennedy J.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Electrical therapeutic systems
600559, 381 60, A61N 118
Patent
active
059998563
ABSTRACT:
A hearing assistance system includes electric response audiometry (ERA) functions for diagnostic, self-calibration, frequency-response parameter adjustment, feedback self-testing, and automatic gain control (AGC) purposes. The invention includes partial middle ear implantable (P-MEI), total middle ear implantable (T-MEI), cochlear implant, or other hearing assistance systems. Auditory response signals are obtained by auditory brain-stem response (ABR), cortical ERA, and electrocochleography. A mechanical vibration or electrical stimulus is introduced directly in the middle or inner ear, either in response to an input signal corresponding to sound, or in response to an independent calibration signal. Auditory response signals are obtained by surface electroencephalography (EEG) or by an implanted electrocochleographic sensor. Calibration stimuli have constant or adjustable amplitudes, frequencies, and repetition frequencies. Wide-band clicks, pure audio tones, and other calibration stimuli are included. The diagnostic and calibration capabilities are particularly useful to assess efficacy during implantation of components into a patient under general anesthesia.
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Schaetzle Kennedy J.
St. Croix Medical, Inc.
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