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Method for non-invasively determining haemoglobin and oxygen concentrations in the blood

A technology of hemoglobin concentration and oxygen concentration, applied in diagnostic recording/measurement, medical science, optical sensor, etc., can solve problems such as insufficient accuracy, and achieve the effect of increasing accuracy

Inactive Publication Date: 2019-06-14
OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTYU TELEBIOMET
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] All the above methods provide insufficient accuracy in determining the concentration of hemoglobin and oxygen in the blood

Method used

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  • Method for non-invasively determining haemoglobin and oxygen concentrations in the blood
  • Method for non-invasively determining haemoglobin and oxygen concentrations in the blood

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Embodiment Construction

[0024] The device that provides the best method for realizing the non-invasive method for measuring hemoglobin concentration and oxygen concentration in blood as claimed in the application includes: a series connection of optical radiation receiver 2, amplifier 3, analog-to-digital converter 4, controller 5, and display unit 6, and the LED unit 1 is connected to the output of the controller 5.

[0025]The LED unit 1 comprises: at least one LED configured to emit light radiation in a first wavelength range (680-720nm) including 700nm, for example LED L-132XHT from Kingbright; configured to emit a second wavelength range (680-720nm) including 880nm 860-900nm) at least one LED of optical radiation, such as the LED BL-314IR of BetLux; and at least one LED configured to emit optical radiation of a third wavelength range (940-980nm) including 960nm, such as Vishay The LEDTSUS4400.

[0026] A photodiode sensitive to optical radiation in the wavelength range from 570 to 1100 nm, for ...

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Abstract

The invention provides a method for non-invasively determining haemoglobin and oxygen concentrations in the blood, and relates to the field of analysis of the chemical composition of materials and canbe used in diagnostic medical equipment for non-invasively determining haemoglobin and oxygen concentrations in the blood. The method comprises exposing a biological tissue to an optical radiation infirst, second and third wavelength ranges successively, which comprise the values of 700 nm, 880 nm and 960 nm respectively; receiving the reflected optical radiation; converting the latter into an electric signal; determining the haemoglobin concentration on the basis of the sum of the electrical signals obtained during exposure to the optical radiation in the first and second wavelength ranges,which sum is reduced by a value determined by means of the electric signal obtained during exposure to the optical radiation in the third range; and determining the oxygen concentration on the basisof the difference between the electrical signals obtained during exposure to the optical radiation in the first and second wavelength ranges, which difference is reduced by a value determined by meansof the electric signal obtained during exposure to the optical radiation in the third range. The invention makes it possible, when determining haemoglobin and oxygen concentrations, to reduce inaccuracies caused by the presence of water in the biological tissue undergoing examination.

Description

technical field [0001] The invention is suitable for the research and analysis of the chemical composition of the material, and is mainly used in a diagnostic medical device for non-invasively measuring the hemoglobin concentration and oxygen concentration contained in blood. Background technique [0002] The methods and techniques of optical oximetry are most widely used for the non-invasive determination of oxygen saturation and hemoglobin concentration in blood. Since deoxygenated hemoglobin and oxygenated hemoglobin significantly absorb red and infrared light radiation, respectively, these methods take advantage of the difference in the absorption of light radiation exhibited by forms of hemoglobin containing and without oxygen. [0003] A method for determining the concentration of blood components is known (RU 2344752C1, 2009) which estimates the hemoglobin concentration by exposing biological tissue to alternating radiation in the visible part of the spectrum, eg at w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1455
CPCA61B5/1455A61B5/14551A61B5/00A61B2560/02A61B2562/0238
Inventor 爱德华·弗拉基米罗维奇·克里扎诺夫斯基阿曼·格里吉洛维奇·格里高里安弗拉基米尔·维克托罗维奇·科瓦廖夫亚历山大·弗拉基米罗维奇·奇斯托夫
Owner OBSHCHESTVO S OGRANICHENNOJ OTVETSTVENNOSTYU TELEBIOMET
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