Method and apparatus for detecting and treating obstructive sleep apnea
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United States of America Patent
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Jul 30, 1996
Grant Date -
N/A
app pub date -
Sep 21, 1994
filing date -
Sep 21, 1994
priority date (Note) -
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Abstract
A method for treating obstructive sleep apnea in a patient by electrical stimulation of muscles of the upper airway includes detecting an obstructive apnea and then stimulating muscles of the upper airway in response to the apnea. The apnea is detected by monitoring changes in a respiratory effort waveform of the patient for a parameter characteristic of the patient's level of respiratory effort which is averaged over successive respiratory cycles to provide a baseline average. A limit value is then generated from the baseline average and the value for the parameter is compared with the limit value. If the limit value is exceeded, an apnea event is detected. Electrical stimulation can then be applied to a muscle of the upper airway upon detection of the apnea at a level which restores patency to the airway.
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