公开(公告)号：US20210204820A1

公开(公告)日：2021-07-08

申请号：US16768367

申请日：2019-12-25

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xun Zhang ,  Yang Han ,  Guangfei Li ,  Hui Du ,  Siyang Liang

IPC: A61B5/0205 ,  A61B5/1464 ,  A61B5/024

Abstract: A method for detecting fetal blood oxygen saturation, including: using at least two detection light of different wavelengths, to irradiate a fetus in an examined pregnant woman's abdomen in a time-sharing manner and acquiring first photoplethysmography signals corresponding to the abdomen under irradiation of the respective wavelengths of detection light, and to irradiate a detection site except the examined pregnant woman's abdomen in a time-sharing manner and acquiring second photoplethysmography signals corresponding to the detection site under irradiation of the respective wavelengths of the detection light; determining a target photoplethysmography signal of the fetus that corresponds to the detection light of each wavelength, according to the first photoplethysmography signals and the second photoplethysmography signals that correspond to the detection light of each wavelength; and determining the fetal blood oxygen saturation, according to respective target photoplethysmography signals determined.

公开(公告)号：US11375906B2

公开(公告)日：2022-07-05

申请号：US16768367

申请日：2019-12-25

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xun Zhang ,  Yang Han ,  Guangfei Li ,  Hui Du ,  Siyang Liang

IPC: A61B5/0205 ,  A61B5/1464 ,  A61B5/024 ,  A61B5/1455 ,  A61B5/00

Abstract: A method for detecting fetal blood oxygen saturation, including: using at least two detection light of different wavelengths, to irradiate a fetus in an examined pregnant woman's abdomen in a time-sharing manner and acquiring first photoplethysmography signals corresponding to the abdomen under irradiation of the respective wavelengths of detection light, and to irradiate a detection site except the examined pregnant woman's abdomen in a time-sharing manner and acquiring second photoplethysmography signals corresponding to the detection site under irradiation of the respective wavelengths of the detection light; determining a target photoplethysmography signal of the fetus that corresponds to the detection light of each wavelength, according to the first photoplethysmography signals and the second photoplethysmography signals that correspond to the detection light of each wavelength; and determining the fetal blood oxygen saturation, according to respective target photoplethysmography signals determined.

公开(公告)号：US11109794B2

公开(公告)日：2021-09-07

申请号：US16414523

申请日：2019-05-16

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Guangfei Li ,  Qi Yang ,  Xun Zhang

IPC: A61B5/352 ,  A61B5/00 ,  A61B5/333 ,  A61B5/366

Abstract: A method for processing ECG signals includes: removing peak position information of any R wave of a plurality of R waves in a plurality of ECG signals if it is determined that a first RR interval is less than or equal to a first RR interval threshold, and an amplitude of the R wave is less than or equal to a first R wave amplitude threshold; and detecting at least one new R wave in a first RR interval if it is determined that the first RR interval is greater than or equal to a second RR interval threshold; obtaining peak position information of the at least one new R wave, and then storing peak position information of any new R wave if it is determined that an amplitude of the new R wave is greater than or equal to a second R wave amplitude threshold.

公开(公告)号：US11259721B2

公开(公告)日：2022-03-01

申请号：US16439011

申请日：2019-06-12

Applicant: BOE Technology Group Co., Ltd.

Inventor： Xun Zhang ,  Guangfei Li

IPC: A61B5/1455

Abstract: Disclosed are a method and device for detecting the concentration of total hemoglobin in blood. A differential path factor corresponding to a subject is determined according to a physiological parameter of the subject and a predetermined table of a corresponding relation between the physiological parameter and the differential path factor.