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Biological substance measurement device

A technology for measuring devices and living organisms, which is applied in the directions of measuring devices, diagnostic recording/measurement, phase influence characteristic measurement, etc., can solve problems such as strong absorption, and achieve low-cost effects

Pending Publication Date: 2020-09-15
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a non-invasive blood sugar level sensor, it is attempted to use infrared light measurement that can directly detect sugar fingerprints, but water absorbs infrared light strongly, so infrared light cannot reach deep from the skin surface

Method used

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  • Biological substance measurement device
  • Biological substance measurement device
  • Biological substance measurement device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0034] Hereinafter, a blood sugar level will be described as an example of a measurement object, but the measuring device of the present invention is not limited to the measurement of the blood sugar level, and can also be applied to the measurement of other biological substances.

[0035] In the ATR method described in Patent Document 1, since the prism is brought into contact with the skin to be measured, evanescent light does not penetrate deep into the skin to be measured. As a result, there is a problem that the measurement accuracy of the amount of biological substances is low. In this embodiment, the amount of biological substances is not measured based on the ATR method.

[0036] figure 1 It is a diagram showing the configuration of the portable non-invasive biological substance measurement device 80 according to the first embodiment.

[0037] The noninvasive biological substance measurement device 80 includes a light source 200 , a prism 210 , an optical position de...

Embodiment approach 2

[0063] image 3 It is a diagram showing the configuration of the portable non-invasive biological substance measuring device 80 according to the second embodiment.

[0064] The noninvasive biological substance measurement device 80 includes an ATR prism 20 , an infrared light source unit 32 , an infrared light detector 30 , a control unit 52 , and a user interface 54 .

[0065] The infrared light source unit 32 includes at least one infrared light source. The infrared light source unit 32 radiates infrared light in the entire or part of the wavelength region of the absorption wavelength of the biological substance.

[0066] The infrared light detector 30 detects infrared light emitted from the ATR prism 20 .

[0067] The control unit 52 controls the infrared light source unit 32 and the infrared light detector 30 . The control unit 52 calculates the concentration of the blood sugar level in the living body based on the intensity of the infrared light detected by the infrare...

Embodiment approach 3

[0119] Differences from Embodiment 2 will be described.

[0120] Figure 9 It is a figure which shows the structure of the infrared photodetector 30 of Embodiment 3.

[0121] The infrared light detector 30 is an integrated wavelength selective infrared sensor. The infrared photodetector 30 includes a sensor array 1000 and a detection circuit 1010 .

[0122] The sensor array 1000 includes 9×6 pixels (semiconductor optical elements) 100 arranged in an array. 9×6 semiconductor optical elements 100 are arranged in a matrix (array) in the X-axis and Y-axis directions on the substrate 1 . Light is incident from a direction parallel to the Z axis. That is, the infrared light detector 30 vertically receives the infrared light emitted from the ATR prism 20 .

[0123] The detection circuit 1010 is disposed around the sensor array 1000 . The detection circuit 1010 detects an image by processing a signal detected by the semiconductor optical element 100 . The detection circuit 1010...

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Abstract

This biological substance measurement device comprises: an infrared light source unit for emitting infrared light having wavelengths covering the entirety or a portion of the absorption wavelength range of a biological substance, a prism for transmitting the infrared light emitted from the infrared light source unit while touching the surface of the organism and emitting the infrared light towardthe surface of the organism, a light source for radiating light of a wavelength in the visible light range or near-infrared light range toward the prism, and a light position detector for detecting the path of the light from the light source by detecting the light from the light source that has been emitted from the prism.

Description

technical field [0001] The present invention relates to a biological substance measuring device, and particularly relates to a biological substance measuring device for measuring biological substances such as sugar present in a living body using infrared light. Background technique [0002] Conventional intrusive sensors use a needle to collect blood and analyze the composition of substances in a living body. In particular, a non-invasive method is required for a daily-used blood glucose level sensor in order to alleviate the patient's pain due to puncture. As a non-invasive blood sugar level sensor, it is attempted to use infrared light measurement that can directly detect sugar fingerprints, but water absorbs infrared light strongly, so infrared light cannot reach deep from the skin surface. Therefore, there is a demand for a technique for stably and accurately detecting a blood sugar level even when the absorption of sugar in a living body is small. [0003] In response...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/552G01N21/35
CPCG01N21/35G01N21/552G02B5/008A61B5/1455G01N21/359G01N21/41
Inventor 篠原弘介榎健太郎秋山浩一小川新平藤泽大介
Owner MITSUBISHI ELECTRIC CORP
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