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Noninvasive multiparameter measuring device for liver function and detecting method

A measuring device and multi-parameter technology, applied in the field of medical devices, can solve problems such as loss of extracted signal information, patient pain, trauma, etc., and achieve the effect of solving weak signal strength, improving measurement accuracy, and high stability

Inactive Publication Date: 2018-01-12
长春国科希莱科技有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has obvious disadvantages, such as trauma, long test time, pain for patients, and easy infection of medical staff
[0003] At present, non-invasive liver function multi-parameter measurement devices and methods cannot meet the needs of liver reserve function analysis and measurement. The problem of loss of extracted signal information after excessive denoising

Method used

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  • Noninvasive multiparameter measuring device for liver function and detecting method
  • Noninvasive multiparameter measuring device for liver function and detecting method
  • Noninvasive multiparameter measuring device for liver function and detecting method

Examples

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Embodiment 1

[0035] Example 1 as figure 1 As shown, a non-invasive liver function multi-parameter measurement device has two measurement units, the two measurement units have the same structure and share a display 4; the finger clip sensor 1 of each measurement unit is connected to the analog front-end unit 2; the analog front-end unit 2 is connected with the single-chip microcomputer 3 through the I2C bus; the display 4 is connected with the IO port of the single-chip microcomputer 3; the power supply 5 provides stable DC power for the system, and the single-chip microcomputer 3 is connected with the upper computer 6, and the upper computer 6 is an industrial computer. Store and run operating software in the host computer 6;

[0036]The finger clip sensor 1 has a light source unit and a photoelectric receiver unit. The light source unit has three light sources, and each light source emits an optical signal with a wavelength of 660nm, 805nm, and 940nm respectively. Among the middle finger...

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Abstract

The invention provides a noninvasive multiparameter measuring device for the liver function and a detecting method. The noninvasive multiparameter measuring device is provided with two paths of same measuring units; finger-clip type sensors transmit lights with three types of wavelengths and are connected with a simulation front-end unit which is connected with a single chip microcomputer; a display device is connected with an IO interface of the single chip microcomputer; a power supply supplies power to a system, the single chip microcomputer is connected with the upper computer, and operation software is stored and operated in the upper computer. The detection method comprises the following steps: utilizing a mathematical relation between the characteristics of biological tissues for absorbing lights with different wavelengths to establish an equation group, converting component change in the biological tissues into a coefficient of linear regressive equation to be solved, and obtaining parameters such as 15-minute retention rate of ICG pigment, blood-oxygen saturation degree and pulse heart rate and the like for noninvasive detection. The noninvasive multiparameter measuring device and the detecting method provided by the invention have the advantages that the measured pulse rate is 30bpm-300bpm, and the accuracy can reach + / 2bpm; the blood-oxygen saturation degree is 70%-100%, and the accuracy is + / -2digit; and the ICG pigment accuracy is + / -5%, the accuracy and the stability are high, and reliable device and method can be provided for evaluation on the liver reserve functions and surgical risks.

Description

technical field [0001] The device of the invention belongs to the technical field of medical devices, and in particular relates to a non-invasive liver function multi-parameter measuring device and a detection method. The indocyanine green (ICG) pigment is injected into the patient's blood, and the ability of the patient's liver reserve function is evaluated by measuring the metabolism of the ICG pigment in the blood within a specified period of time. The technical principle is to establish a measurement model based on the principle of spectral measurement, and use digital signal filter processing algorithms to calculate parameters such as heart rate, blood oxygen saturation, and ICG pigment concentration. Background technique [0002] Liver disease is a malignant infectious disease. In recent years, the number of people suffering from liver diseases in my country has reached 30 million, and the number of chronic liver virus carriers has reached 120 million. Liver reserve ...

Claims

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Application Information

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IPC IPC(8): A61B5/00A61B5/1455A61B5/0205
Inventor 王方雨
Owner 长春国科希莱科技有限公司
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