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Method of selecting the intensity of a light source for monitoring an analyte in blood, and a device thereof

A technology for blood analysis and analytes, applied in applications, optical sensors, diagnostic recording/measurement, etc., can solve problems that have not yet been discovered, and there are no devices that are comfortably worn on the body

Pending Publication Date: 2021-01-22
WELL BEING DIGITAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Therefore, a suitable device that can measure a subject's HgbA1c outside of a laboratory has not yet been discovered, nor is there a device that can be comfortably worn on the body

Method used

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  • Method of selecting the intensity of a light source for monitoring an analyte in blood, and a device thereof
  • Method of selecting the intensity of a light source for monitoring an analyte in blood, and a device thereof
  • Method of selecting the intensity of a light source for monitoring an analyte in blood, and a device thereof

Examples

Experimental program
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Embodiment Construction

[0057] figure 1 An HbA1c monitor 100 shaped like a watch is shown. The glycated hemoglobin (HgbA1c) monitor is worn on one wrist of the subject. The underside of the glycated hemoglobin monitor 100 includes at least two pairs of photoplethysmography (PPG) sensors. The PPG sensor on the underside of this embodiment is placed close to the wrist to avoid ambient light from affecting the optical sensor 103 readings.

[0058] Each of the two PPG sensors includes a light source 101 and an optical sensor 103 . Typically, the light source 101 is an LED (Light Emitting Diode) and the optical sensor 103 is a photodiode. However, those skilled in the art can understand that light sources other than LEDs suitable for irradiating into the tissue of the subject can be used. Similarly, other optical detectors than optical diodes may also be used.

[0059] exist figure 1 , each light source 101 is depicted as a circle. Each optical sensor 103 is placed next to the light source 101 and ...

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Abstract

A method of monitoring an analyte in blood, particularly glycated-haemoglobin (HbA1c or HgbA1c) uses two photoplethysmocharty (PPG) sensors (101, 103, 201, 203, 205, 207), which are worn on the body of a subject. Each photoplethysmocharty sensor (101, 103, 201, 203, 205, 207) observes the blood of the subject in a different wavelength. One of the wavelengths monitors glycated-haemoglobin. The other one of the wavelengths monitors the body of blood in general. The shapes of the pulses obtained by each of the PPG sensors from the subject are used to adjust the intensity of the light emitted by the PPG sensors into the subject. If on adjustment of the light intensity, the shapes of the pulses become similar, the size of the pulses can be used to provide quasi-quantification of the analyte.

Description

technical field [0001] The present invention relates to the field of wearable monitors. In particular, the present invention relates to monitors that perform non-invasive methods for monitoring analytes, such as glycated hemoglobin, in blood. Background technique [0002] Typically, diabetes and pre-diabetic conditions are identified by blood sugar levels. However, the level of blood sugar is not a conclusive indicator of the condition. For example, blood glucose levels rise after a meal, but this does not mean that the subject is diabetic. Conversely, low blood sugar levels occur after insulin injections, but this does not mean that the subject is no longer diabetic. Furthermore, accurate measurement of blood sugar levels is cumbersome. Most home testing devices require the subject to fast before blood can be drawn for testing. Usually, these tests require pricking a finger. Doing this every day is painful for many people. [0003] It has been suggested that the leve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1455
CPCA61B5/1455A61B5/12A61B5/14542A61B5/14532A61B5/14535A61B5/1495A61B5/681A61B5/24A61B5/02416A61B5/4866A61B5/7285A61B2562/0238A61B2562/06
Inventor 王明业
Owner WELL BEING DIGITAL LTD