Sleep apena detection system and method
AssigneeKoninklijke Philips N.V.
InventorsGABRIELE PAPINI, PEDRO MIGUEL FERREIRA DOS SANTOS DA FONESCA
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Abstract
A system for detecting sleep apnea uses a PPG sensor for generating a PPG signal. An estimate of respiratory effort is derived from the PPG signal, and from this a respiratory effort signal is derived. Characteristic features are extracted from the respiratory effort signal, and sleep disordered breathing events are detected from the extracted characteristic features. This analysis can distinguish between sleep disordered breathing events and normal breathing during sleep.
Claims15
A system for detecting sleep apnea, comprising:
- a PPG sensor for generating a single-wavelength PPG signal for use in detecting sleep apnea;
- and
- a processor, which is adapted to:
- provide an estimate of respiratory effort from the PPG signal and thereby derive a respiratory effort signal;
- extract characteristic features from the respiratory effort signal;
- and
- detect sleep disordered breathing events from the extracted characteristic features and thereby distinguish between sleep disordered breathing events and normal breathing during sleep.
A computer-implemented method for detecting sleep apnea, comprising:
- receiving a single-wavelength PPG signal;
- providing an estimate of respiratory effort from the PPG signal and thereby deriving a respiratory effort signal;
- extracting characteristic features from the respiratory effort signal;
- and
- detecting sleep disordered breathing events from the extracted characteristic features.
Dependencies are inferred from the claim text.