Title:
APNEA-HYPOPNEA INDEX ESTIMATION DEVICE, METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/176948
Kind Code:
A1
Abstract:
The present invention estimates an apnea-hypopnea index without restricting a subject. The present invention: acquires a body vibration signal for a sleeping subject in a non-contact/non-restrictive manner; extracts therefrom four parameters consisting of the respiration rate, the heart rate, a phase coherence calculated from the instantaneous phase difference between the instantaneous phase of the fluctuation in the heartbeat interval and the instantaneous phase of the respiration pattern, and the body movement ratio; creates histograms of the parameters; generates a feature image from the histograms; and inputs the feature image into a machine learning–trained AHI estimation model to estimate the AHI.
Inventors:
KANEGAE MASATOMO (JP)
NIIZEKI KYUICHI (JP)
NIIZEKI KYUICHI (JP)
Application Number:
PCT/JP2023/010494
Publication Date:
September 21, 2023
Filing Date:
March 13, 2023
Export Citation:
Assignee:
HEALTH SENSING CO LTD (JP)
International Classes:
A61B5/08; A61B5/11; A61B5/113; A61B5/16
Domestic Patent References:
| WO2017141976A1 | 2017-08-24 |
Foreign References:
| JP2017064338A | 2017-04-06 | |||
| JP2015504744A | 2015-02-16 | |||
| US7413549B1 | 2008-08-19 | |||
| JP2020513934A | 2020-05-21 |
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