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Method and device for detecting total hemoglobin concentration in blood

A technology of hemoglobin concentration and detection method, which is applied in the field of detection method and device of total hemoglobin concentration in blood, can solve problems such as infection and subject pain, and achieve the effect of improving accuracy and accuracy

Active Publication Date: 2022-04-19
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This causes pain to the subject and even poses a risk of infection

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  • Method and device for detecting total hemoglobin concentration in blood
  • Method and device for detecting total hemoglobin concentration in blood
  • Method and device for detecting total hemoglobin concentration in blood

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Embodiment Construction

[0053] During the beating cycle of the heart, the blood flowing through the arterioles, capillaries and venules in the peripheral blood vessels is correspondingly pulsating. The blood volume is greatest when the heart contracts and smallest when the heart relaxes. In this way, photoplethysmography (Photoplethysmography, PPG) can be used to obtain traces of light absorption changes in human tissue through optical technology, so as to obtain figure 1 PPG signal shown. PPG works by combining figure 2 As shown, the light-emitting diode 210 irradiates light of a specific intensity and wavelength on the skin surface 220 of the subject, and the photovolume detector 230 detects the intensity of the emitted light after passing through the skin surface 220, and draws according to the detected light intensity , to depict figure 1 The ac form of the PPG signal is shown. The generation of the PPG signal is due to the fact that the human heart transports blood to various tissues of the...

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Abstract

The invention discloses a method and a device for detecting the concentration of total hemoglobin in blood. According to the physiological parameters of the subject and the corresponding relationship table between the predetermined physiological parameters and the reference path factors, the corresponding reference path of the subject is determined. Path factor, to improve the accuracy of the reference path factor corresponding to the subject. By acquiring the first photoplethysmography signal of the subject under the light irradiation of the first wavelength and the second photoplethysmography signal under the light irradiation of the second wavelength, and then according to the first photoplethysmography signal, the second The second photoplethysmography signal and the determined reference path factor to improve the accuracy, so that the total hemoglobin concentration of the subject can be detected by a non-invasive method, and the accuracy of the obtained total hemoglobin concentration of the subject can be improved.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a method and device for detecting the concentration of total hemoglobin in blood. Background technique [0002] Currently, the measurement of the total hemoglobin concentration in human blood is performed based on in vitro analysis of the subject's blood. The total hemoglobin concentration is generally determined by taking a blood sample and then measuring the blood sample. However, the above methods generally obtain blood samples from the subject through invasive methods. This causes pain to the subject and even poses a risk of infection. Therefore, how to detect the total hemoglobin concentration in blood by a non-invasive method is an urgent problem to be solved by those skilled in the art. Contents of the invention [0003] Embodiments of the present invention provide a method and device for detecting the concentration of total hemoglobin in blood, which are used to de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/1455
CPCA61B5/14551A61B5/14552A61B5/0059A61B5/02416
Inventor 张珣李广飞
Owner BOE TECH GRP CO LTD