Demand apnea control of central and obstructive sleep apnea
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United States of America Patent
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Sep 15, 1992
Grant Date -
N/A
app pub date -
Mar 19, 1991
filing date -
Mar 19, 1991
priority date (Note) -
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Abstract
An apparatus and method for the control of both central and obstructive sleep apnea using electrical stimulation on a demand basis. Implantable sensors monitor the respiration cycle and determine the occurrence of apnea events. Central apnea is sensed by the passage of an escape interval of time without the sensing of an inspiratory event and a concurrent decrease in blood oxygen saturation. Obstructive sleep apnea is sensed as an abnormal pressure differential across the airway. The diaphragm is electrically stimulated upon sensing of central apnea. The musculature of the upper airway is electrically stimulated upon sensing of an occurrence of obstructive sleep apnea. Stimulation of the upper airway is provided whenever central apnea is sensed.
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