Patent ID: 11896386
Assignee: NOX MEDICAL EHF
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A system to determine whether a first signal and a second signal of a physiological study originate from a same intended subject, the system comprising:
one or more processors; and
one or more memory storages, wherein the one or more memory storages have stored thereon the data of the physiological study,
wherein the one or more processors are configured to perform the following
extract the first signal from the physiological study, the physiological study being a sleep study, the first signal being a respiratory inductance plethysmography (RIP) signal obtained in the sleep study;
extract the second signal from the physiological study, the second signal being a pulse-measuring signal obtained in the sleep study, and data of the RIP signal and data of the pulse-measuring signal being stored on the one or more memory storage devices;
determine a coherency value between components of the extracted RIP signal and components of the pulse-measuring signal; and
determine whether the RIP signal and the pulse-measuring signal originate from the same intended subject based on the determined coherency value,, wherein the one or more processors determines the coherency value by
sampling a first frequency band of the RIP signal,
sampling a second frequency band of the pulse-measuring signal, and
determining whether a synchronous relationship exists between components of the first frequency band of the RIP signal and the second frequency band of the pulse-measuring signal,
wherein the first frequency band and the second frequency band include heart rate and/or harmonics of the heart rate and/or respiratory rate and/or harmonics of the respiratory rate in the subject during the physiological study,, wherein
in a case that the RIP signal and the pulse-measuring signal are determined to originate from the same intended subject, the one or more processors indicates data of the physiological study to be usable for diagnosing a sleep disorder of the intended subject or determining that the intended subject does not suffer from a sleep disorder, and
in a case that the RIP signal and the pulse-measuring signal are determined to not originate from the same intended subject, the one or more processors indicates data of the physiological study to be indicated to be falsified.