Double-wavelength differential near-infrared non-invasive glucose meter

A near-infrared, dual-wavelength technology, applied in the field of measuring instruments, can solve the problems of wide spectral range, patient pain, and low accuracy, and achieve the effect of improving detection accuracy and high measurement accuracy

Active Publication Date: 2013-10-16
杨立峰
View PDF10 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the blood glucose testers commonly used in clinical practice are traumatic and bring certain pain to the patients.
At the same time, we have noticed that people are developing non-invasive blood sugar measurement methods and detection instruments, and have published a number of patents, such as "Non-invasive Near-infrared Electronic Blood Glucose Meter" (CN102198004A) using infrared light sources (600-2500nm) to transmit fingers, according to For the absorption spectrum of blood sugar, the blood sugar value is obtained after weighted average of the signals of each sensor in the infrared sensor array by using the mixed expert algorithm of the neural network. , water, fat and protein and other components; "Non-invasive Blood Glucose Monitor" (CN201295231Y) obtains the patient's b

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Double-wavelength differential near-infrared non-invasive glucose meter
  • Double-wavelength differential near-infrared non-invasive glucose meter
  • Double-wavelength differential near-infrared non-invasive glucose meter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings, a dual-wavelength differential near-infrared non-invasive blood glucose meter:

[0021] The main feature of the present invention is to use two lasers, i.e. laser one 11 and laser two 16, utilize the optical neutral density filter 17 to make the outgoing light power of the two lasers consistent, use the lock-in amplifier 110 and the function generator 15 simultaneously to make the two The phases of the two lasers are opposite, that is, the phase difference is around 180 degrees, and the specific variation range is between 179.9 and 180.1.

[0022] Since the working phases of the two lasers are just opposite, theoretically in the whole period 0≤t≤τ 0 The optical power incident on the sample can be expressed as:

[0023] S AB = A A ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Center wavelengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention discloses a double-wavelength differential near-infrared non-invasive glucose meter. The double-wavelength differential near-infrared non-invasive glucose meter comprises a laser device I (11), a plane mirror I (12), a protective layer (13), a sample (14), a function generator (15), a laser device II (16), an optical neutral density light filter (17), a parabolic mirror I (18), a plane mirror II (19), a phase-locked amplifier (110), a broadband optical near-infrared detector (111), a double-channel optical filter (112) and a parabolic mirror II (113), wherein the optical neutral density light filter can be used for adjusting the power of the laser device II (16), so that the output power ratio of the laser device I (11) to the laser device II (16) is adjusted; and the phase difference is controlled by the function generator (15) and the phase-locked amplifier (110). The double-wavelength differential near-infrared non-invasive glucose meter not only has non-invasive detecting capacity, but also has high measuring precision, especially within a hypoglycemic range by combining the amplitude and the phase characteristics of the near-infrared light and utilizing the crest and trough variation difference of absorption spectrum. Meanwhile, the protective layer is provided for preventing the laser devices from accidently injuring skin tissues.

Description

technical field [0001] The invention relates to a measuring instrument for medically detecting the blood sugar level of diabetic patients, in particular to a dual-wavelength differential near-infrared non-invasive blood glucose meter. Background technique [0002] my country has become the country with the largest number of diabetic patients in the world. The total number of diabetic patients is nearly 100 million, and the number of pre-diabetics is about 150 million. In order to control the development of the disease, diabetic patients need to continuously measure their blood sugar level to achieve the purpose of keeping the blood sugar level in a normal range. At present, the commonly used blood glucose testing instruments clinically are all traumatic, which brings certain misery to the patients. At the same time, we have noticed that people are developing non-invasive blood sugar measurement methods and detection instruments, and have published a number of patents, such ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B5/1455
Inventor 赵巍
Owner 杨立峰
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products