公开(公告)号：US10750960B2

公开(公告)日：2020-08-25

申请号：US15994495

申请日：2018-05-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lifeng Miao ,  Manman Zhang ,  Matthew Wiggins

IPC: A61B5/024 ,  A61B5/00 ,  A61B5/0468 ,  A61B5/046

Abstract: A method for event detection in a user-wearable device includes receiving, from a first sensor implemented in the user-wearable device, photoplethysmogram (PPG) signals; processing, at a processor, the PPG signals to obtain PPG signal samples; detecting, at the processor, beats in the PPG signal samples; dividing the PPG signal samples into PPG signal segments; extracting at least one inter-beat interval (IBI) feature in each PPG signal segment; classifying, at the processor, each PPG signal segment using the extracted IBI feature associated with the PPG signal segment and using a machine learning model; in response to the classifying, generating, at the processor, an event prediction result for the PPG signal segment based on the extracted IBI feature; and displaying the event prediction result at the user-wearable device. In another embodiment, the method further includes extracting morphology based features.

公开(公告)号：US20180279891A1

公开(公告)日：2018-10-04

申请号：US15994495

申请日：2018-05-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Lifeng Miao ,  Manman Zhang ,  Matthew Wiggins

IPC: A61B5/024

CPC classification number: A61B5/02416 ,  A61B5/02405 ,  A61B5/02438 ,  A61B5/046 ,  A61B5/0468 ,  A61B5/681 ,  A61B5/6824 ,  A61B5/721 ,  A61B5/725 ,  A61B5/7285 ,  A61B5/74

Abstract: A method for event detection in a user-wearable device includes receiving, from a first sensor implemented in the user-wearable device, photoplethysmogram (PPG) signals; processing, at a processor, the PPG signals to obtain PPG signal samples; detecting, at the processor, beats in the PPG signal samples; dividing the PPG signal samples into PPG signal segments; extracting at least one inter-beat interval (IBI) feature in each PPG signal segment; classifying, at the processor, each PPG signal segment using the extracted IBI feature associated with the PPG signal segment and using a machine learning model; in response to the classifying, generating, at the processor, an event prediction result for the PPG signal segment based on the extracted IBI feature; and displaying the event prediction result at the user-wearable device. In another embodiment, the method further includes extracting morphology based features.

公开(公告)号：US11576583B2

公开(公告)日：2023-02-14

申请号：US16010289

申请日：2018-06-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Alexandra Dana ,  Jungmok Bae ,  Matthew Wiggins

IPC: A61B5/021 ,  A61B5/00 ,  A61B5/022 ,  A61B5/11 ,  A61B8/04 ,  A61B8/08 ,  A61B5/0225 ,  A61B8/02 ,  A61B5/024 ,  A61B5/0245

Abstract: A method for estimating blood pressure using a blood flow occlusion system applied to an artery includes receiving from a first sensor a sensed signal; processing at a processor the sensed signal to detect beats in a pulsatile signal; determining validity of the detected beats; storing the detected beats and data associated with the detected beats in the sensed signal as the pressure applied to the artery by the blood flow occlusion system deflates towards a level below a nominal level; determining baseline beat characteristics; evaluating the stored beats and associated data to detect change in beat characteristics as compared to the baseline beat characteristics; selecting a beat before the detected change in the beat characteristic as the last beat indicating the onset of the diastolic blood pressure for the artery; determining a value of the applied pressure at the last beat as the diastolic blood pressure for the artery.

公开(公告)号：US10849531B2

公开(公告)日：2020-12-01

申请号：US16017943

申请日：2018-06-25

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yelei Li ,  Matthew Wiggins

IPC: A61B5/00 ,  A61B5/021 ,  A61B5/0402 ,  A61B5/024 ,  A61B5/11 ,  A61B5/053 ,  A61B5/06

Abstract: A method for detecting arrhythmia, including receiving, via at least one motion sensor, channels of raw motion signals for a user; monitoring the channels for motion activity; generating segments from the raw motion signals; determining heartbeat event locations from the generated segments; performing false alarm detection on the raw motion signals and heartbeat event locations to generated refined abnormal candidates.

公开(公告)号：US20190298188A1

公开(公告)日：2019-10-03

申请号：US16010289

申请日：2018-06-15

Applicant: Samsung Electronics Co., Ltd.

Inventor： Alexandra Dana ,  Jungmok Bae ,  Matthew Wiggins

IPC: A61B5/021 ,  A61B5/0225 ,  A61B5/00 ,  A61B5/022 ,  A61B5/11 ,  A61B8/04 ,  A61B8/02 ,  A61B8/08

Abstract: A method for estimating blood pressure using a blood flow occlusion system applied to an artery includes receiving from a first sensor a sensed signal; processing at a processor the sensed signal to detect beats in a pulsatile signal; determining validity of the detected beats; storing the detected beats and data associated with the detected beats in the sensed signal as the pressure applied to the artery by the blood flow occlusion system deflates towards a level below a nominal level; determining baseline beat characteristics; evaluating the stored beats and associated data to detect change in beat characteristics as compared to the baseline beat characteristics; selecting a beat before the detected change in the beat characteristic as the last beat indicating the onset of the diastolic blood pressure for the artery; determining a value of the applied pressure at the last beat as the diastolic blood pressure for the artery.