公开(公告)号：US20210338118A1

公开(公告)日：2021-11-04

申请号：US17245139

申请日：2021-04-30

Applicant: WITHINGS

Inventor： Paul EDOUARD ,  Romain KIRSZENBLAT

IPC: A61B5/1455 ,  A61B5/00

Abstract: A non-invasive method to determine a current functional blood oxygen saturation level (SpO2):
a—acquiring, at a sampling frequency, a photoplethysmography light response for each wavelength of a plurality of at least three wavelengths (λ1, λ2, λ3), resulting respectively in a first, second and third raw data series, b—applying a low-pass filter to each of the first, second and third raw data series, resulting respectively in a first, second and third DC data series representing an unmodulated amplitude response c—determining respectively in a first, second and third AC data series representing an unmodulated amplitude response, d—applying a computation engine to the first, second and third AC and DC data series, and determining therefrom a user current blood oxygen saturation level.

公开(公告)号：US20220202360A1

公开(公告)日：2022-06-30

申请号：US17607725

申请日：2020-02-19

Applicant: Withings

Inventor： Nicolas AIMON ,  Thomas BEDETTI ,  Paul EDOUARD ,  Pierre BARTET ,  Varoun SANATH KOUMAR RADJA ,  Paul-Edouard JUAN

IPC: A61B5/00 ,  G16H40/67 ,  A61B7/00

Abstract: The disclosure is directed to a sensing device, configured to be installed in a bedding, for monitoring a user's sleep, the device comprising: a sensing part, for acquiring/determining a value representative of an a force or pressure and/or a value representative of a variation of a force or pressure, a housing comprising at least a pressure transducer and an electronic processing unit, a microphone connected to the electronic processing unit, wherein the electronic processing unit is configured to process first and second electrical signals delivered respectively by the microphone and the pressure converter, wherein the electronic processing unit is either configured to deduce locally at least a breathing disturbance therefrom or configured to send data representative of the first and second electrical signals to a remote device.

公开(公告)号：US20210345949A1

公开(公告)日：2021-11-11

申请号：US17308676

申请日：2021-05-05

Applicant: WITHINGS

Inventor： Paul EDOUARD ,  Gaël PEREZ ,  Martin LELONG

IPC: A61B5/00 ,  A61B5/0205 ,  A61B5/145

Abstract: A method to determine breath disturbances of a user, in a device comprising three LEDs configured to emit light rays at three wavelengths, a photodiode, a control unit and a motion sensor, the method comprising: a- acquiring, at a predefined sampling frequency, a PPG light response for each wavelength, resulting in a first, second and third raw data series representing an amplitude response, and acquiring motion signals, resulting in a fourth raw data series, b- applying feature extracting filters to the raw data series, for outputting pattern channels comprising: variation (DSpO2) of blood oxygen saturation level, variation (DRSA) of Respiratory Sinus Arrythmia, variation (DRR) of Respiration Rate, Motion index, Heart Rate Variation, variation of AC and/or DC component of PPG light response, c- applying a 1D CNN to the pattern channels for determining a breathing disturbance event and AHI.

公开(公告)号：US20240237927A1

公开(公告)日：2024-07-18

申请号：US18430227

申请日：2024-02-01

Applicant: Withings

Inventor： Paul EDOUARD ,  Romain KIRSZENBLAT

IPC: A61B5/1455 ,  A61B5/00

CPC classification number: A61B5/14551 ,  A61B5/0004 ,  A61B5/681 ,  A61B5/7225 ,  A61B5/7264 ,  A61B5/721

Abstract: A non-invasive method to determine a current functional blood oxygen saturation level includes acquiring, at a sampling frequency, a photoplethysmography light response for each wavelength of a plurality of at least three wavelengths, resulting respectively in a first, second and third raw data series, applying a low-pass filter to each of the first, second and third raw data series, resulting respectively in a first, second and third DC data series representing an unmodulated amplitude response determining respectively in a first, second and third AC data series representing an unmodulated amplitude response, applying a computation engine to the first, second and third AC and DC data series, and determining therefrom a user current blood oxygen saturation level.