Patent ID: 11931131
Assignee: RESMED SENSOR TECHNOLOGIES LIMITED
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 16:
17. A method for monitoring a subject, the method comprising:
receiving, at a sensor, at least one signal reflected from the subject's body;
generating, by one or more processors, respiratory movement data from the at least one reflected signal;
deriving, by the one or more processors, a first respiratory parameter from the respiratory movement data;
deriving, by the one or more processors, a respiratory effort envelope from the respiratory movement data;
deriving, by the one or more processors, a second respiratory parameter from the respiratory effort envelope, wherein the second respiratory parameter comprises an apnea hypopnea index, wherein deriving the apnea hypopnea index comprises comparing an overall amplitude of the respiratory effort envelope to one or more thresholds, and wherein a hypopnea event is detected when the overall amplitude of the respiratory effort envelope is both less than a first predetermined threshold and greater than a second predetermined threshold for a predetermined amount of time;
combining, by the one or more processors, at least the first and second respiratory parameters to determine, using a classifier, a numerical value; and
providing, by the one or more processors, an output pertaining to a health assessment of the subject based on a comparison between the numerical value and a third predetermined threshold.