KR20120087118A - Precision method of detecting bio-materials using the lateral flow immunochromatography test - Google Patents

Abstract

PURPOSE: A precisely analyzing method of bio materials based on a lateral flow immunochromatographic test is provided to save costs required for testing and to improve the reproducibility and the reliability of the lateral flow immunochromatographic test. CONSTITUTION: A precisely analyzing method of bio materials includes the following: testing specimens are supplied to desired positions(1); clinical specimens are collected from the specimens, and a testing solution is supplied to the clinical specimens(2); a testing result is measured based on an image sensor by controlling testing conditions according to the kinds of analyzing targets(3); and data from the testing result is output(4). The testing solution is determined according to the kinds of the analyzing targets.

Description

Precision method of detecting bio-materials using the lateral flow immunochromatography test}

The present invention provides a parallel immunochromatography that enables precise processing of specimens, product supply, and test progress, which have not been precisely done in the conventional parallel immunochromatography tests used for disease diagnosis or other sample inspection procedures. The present invention relates to a method for precise analysis of a biological material using chromatography.

Chromatography is used for the purpose of material analysis or pure water separation. As one kind of chromatography, the liquid sample is moved in one direction by capillary action of the porous membrane using a very thin porous membrane in the form of a dry solid rather than a liquid. Lateral flow immunochromatography (Lateral Flow Immunochromatography) for detecting analytes contained in the stomach is widely used.

In such a parallel immunochromatography, an antibody or antigen is attached to a porous membrane in a predetermined shape, and another antibody or antigen is conjugated to a report (reporter) material such as gold, fluorescent material, or luminescent material. After capturing the analyte contained by an immunological action, the immunoconjugate bound to the analyte flows parallel to the membrane by capillary action and meets the antibody or antigen already attached to the membrane. The complex is formed.

In the case of the conventional test method using the parallel immunochromatography, as described in US Pat. No. 5,528,71, the tester checks whether the analyte is present in the sample using the naked eye.

Document 1 US Patent 5622871 (May, Keith) 1997. 04. 22.

However, in such a test using the conventional parallel transfer immunochromatography principle, the test process is not only performed by the investigator's manual work but also by the visual confirmation and determination of the test result, and thus, it is impossible to secure precise test and high reproducibility. Has been raised.

In addition, since the visual judgment based on the conventional method may have the subjective opinion of the investigator, different diagnostic judgments may be made depending on the tester or the time or environment of the test subject even when the same specimen is examined at the medical diagnosis site. Problems have arisen and problems of insufficient quantitative judgment have not been provided to provide sufficient information for the clinical field.

As described above, although various problems have been raised in the conventional method, a chromatographic reading device which can replace the naked eye of the tester as a means for excluding only the subjective test result judgment of the tester among these various problems is disclosed. Disclosed in -0015456.

The immunochromatographic reading apparatus disclosed in the above-described Patent Publication No. 10-2006-0015456 is limited to a method using a gold colloid conjugate. In this case, the photographed image is analyzed and calculated to provide a quantitative numerical value to the user. I'm suggesting how.

[Patent 2] Publication 10-2006-0015456 (Kazunori Yamauchi) 2005.06.28.

However, the process of testing for the presence of analytes such as bacteria, viruses, and other diseases using parallel immunochromatography, first, take a sample to be tested, treat it in an appropriate buffer, and take as much amount as necessary for the test. In this case, a separate buffer solution is treated and waiting for a certain time until the reaction occurs, and when the result is visually determined, the accuracy of each test step is directly or indirectly determined by the test result. In order to make the final test result precise, the total quantitative precision of the whole test process using the parallel immunochromatography is guaranteed by guaranteeing the amount of sample to be sampled, the amount of solution added, and the uniformity of the measured time. It is essential to secure It is.

Nevertheless, the above-mentioned disclosure of the prior art Patent Publication No. 10-2006-0015456 is only intended to partially improve only the final result measurement part which is determined by the tester's naked eye. As a result, there is still a fundamental problem in that the quantitative reliability required for each step of the test cannot be obtained, which causes the entire test result to be inaccurate.

The precise analysis method of the biological material using the parallel transfer immunochromatography of the present invention is to solve the problems of the prior art as described above. As described above, in the prior art, when testing the presence of an analyte using chromatography, each test step is performed by the tester manually, and thus the test result is not uniform and accurate due to the error caused by the tester. Will fall. In the present invention to solve the above problems to provide a reliable and reproducible measurement data by precisely controlling the entire test process step by step to obtain more reliable test results and significantly shorten the time required for the test For the purpose of

In the precise analysis method of the biological material using the parallel transfer immunochromatography of the present invention, the specimen supply step of supplying the test specimen by controlling the position of the specimen to a position where the sample can be put or a result measurement position according to the signal of the control step ; A sample processing step of collecting a sample and supplying a test solution whose type and amount of use buffer according to the type of the test target material are determined according to the valve opening / closing control of the valve pump module; Controlling a condition value according to the type of analyte to measure a result of measuring an image by a test sensor and an image sensor composed of an optical sensor or an optical amplifier; A result display step of outputting data generated in the result measurement step according to a signal in a control step; The control signal is transmitted to the specimen supply stage by determining whether the specimen is supplied, and the control signal for the type and amount of buffer used according to the test substance is transmitted to the specimen processing stage, and the condition value control signal according to the analysis type is used. Is transmitted to the result measuring step, and the result of analyzing the chromatographic image of the specimen detected in the result measuring step is transmitted to the result display step to control the result display step according to the signal input at each step. It is characterized in that the configuration.

As described above, the present invention automates all the processes performed by the investigator's hand in the parallel immunochromatography test by the mechanism, the built-in algorithm, and the control algorithm illustrated in the figure, thereby providing room for the occurrence of a work error caused by the tester's manual operation. It can fundamentally block, increase the number of tests per unit time, and enable micronization of specimens to improve the reproducibility and reliability of parallel immunoassay tests.

In addition, the test through the quantitative and precise analysis of the immune response can be made in a large amount has the effect of reducing the test cost, the test result has the effect of obtaining more accurate results than the case by manual. In addition, inspection manpower and inspection costs are reduced, and the time required for obtaining the inspection result after the start of the inspection is achieved within 5 minutes, thereby reducing the inspection time.

The device of the present invention can be miniaturized to a size and weight that is portable, and consumes low power to be operated by using a small battery, so that it can be used in field treatments in remote and remote areas where the medical infrastructure is poor.

Figure 1) flow chart of a precise quantitative analysis method of a biological material using a parallel transfer immunochromatography of the present invention
Figure 2) working configuration of a precise quantitative analysis method of a biological material using a parallel transfer immunochromatography of the present invention
3) a specific embodiment of a method for precise quantitative analysis of a biological material using a parallel immunochromatography of the present invention
4) another embodiment of the present invention through a combination of rotational and linear motion
5) another embodiment of the present invention through a three-dimensional linear motion
6) An embodiment of the present invention for supplying one or more specimens at high speed
7) An embodiment of the present invention for supplying one or more specimens at high speed
8) Example of a parallel immunochromatography test specimen

The present invention for solving the above problems as a specific method for achieving the object of the present invention is a parallel moving immunochromatography as shown in FIG. A specimen supplying step (1) of supplying a grading specimen; A sample processing step (2) of collecting a sample and supplying a test solution for testing; A result measuring step (3) of measuring a test result by the specimen and the specimen; A result display step (4) of outputting data generated in the result measurement step according to the signal in the control step; And a control step of controlling the specimen supply step (1), the specimen processing step (2), the result measurement step (3), and the result display step (4) according to the signals input at each step. It consists of (5) and implements.

In addition, each step of the method for precise quantitative analysis of a biological material using the parallel mobile immunochromatography of the present invention as shown in FIG. 1 will be described in detail with reference to the accompanying drawings.

First, the test piece supply step 1 of FIG. 1 is a step of supplying a test piece by the test piece supply module 6 of FIG. 2, and provides a test by positioning the parallel immunochromatography test test piece to be used for the test. At this time, the position control of the specimen is to position the test specimen to the position where the sample can be placed or the result measurement position according to the signal transmitted in the control step (5).

The sample processing step (2) is a step of transferring the various solutions used for sampling and / or testing the sample to be analyzed by the sampling module (7) and the valve / pump module (8), according to the type of material to be tested The type and amount of use buffer are controlled by controlling the opening and closing of the valve of the valve / pump module 8 according to the control signal of the control step 5.

The result measuring step (3) is a step performed by the result measuring module (9) for measuring a test result and controls the condition value according to the signal applied in the control step (5) according to the type of analyte to be analyzed and In addition, the reaction degree of the analyte is measured to transmit a predetermined signal to the control module 11.

The result display step (4) is a step performed by the result display module (10) and according to a signal transmitted in the control step (5) by the liquid crystal display device constituting the result display module 10, etc. Output the result.

The control step (5) is a step performed by the control module (11) with a built-in microcontroller to determine whether the specimen is supplied or not, and transmits a control signal to the specimen supply step (1), which is determined according to the inspection target material. The control signal for the type and amount of used buffer is transmitted to the sample processing step (2), and the condition value control signal according to the analysis type is transmitted to the result measuring step (3), and the result measured in the result measuring step (3) The interpreted chromatographic image of the specimen is transferred to the results display step (4).

Hereinafter, the technical configuration of the present invention will be described in more detail with reference to the following examples.

Figure 3 shows one specific embodiment of a method for precise analysis of the biological material using a parallel transfer immunochromatography of the present invention. As shown in FIG. 3, the test specimen 32 is supplied by the specimen supply module as shown in FIG. 7. The specimen supply module 6 may be configured by a rotational supply method such as (A) of FIG. 7 or a linear supply method shown in (B) of FIG. 7, but the supply of test specimens is not necessarily limited to this method.

The parallel immunoassay test specimen 32 shown in FIG. 3 may be used in the form of a strip or a cassette in which the plastic cover is protected by an external plastic cover, but the shape of the test specimen is not necessarily limited thereto.

The parallel immunochromatography test specimen is made of a material such as cellulose, plastic, glass fiber, nitrocellulose and physiologically active substances such as proteins, nucleic acids, and carbohydrates, and is mainly assembled in the form shown in FIG. 8. The analyte-reporter coupled to the reporter material in the reporter-material reaction part 82 combines with the reporter material while the sample introduced into the sample 81 moves toward the absorption part 84 according to the chromatographic principle. This means that the material combination is fixed in the immobilization material portion 83 so that it cannot move any more.

The sampling arm 34 of FIG. 3 and the sampling nozzle 33 of FIG. 3 constitute the sampling module 7 of FIG.

The inspection sample 31 of FIG. 6 may be supplied by a rotational supply method as shown in FIG. 6A or by a linear supply method as shown in FIG. 6B. However, the supply of the inspection sample is not limited to this method. no.

In the sample processing step 2 of FIG. 1, the sampling (sample collection) module 7 of FIG. 2 composed of the sampling nozzle 33 of FIG. 3 and the sampling arm 34 of FIG. Go to the test sample 31 position of FIG. 3, and as shown in FIG. 3, by the action of the pump module 35 and the valve module 36, the test sample 31 is sucked, and the rotary sample moves up and down again. After reaching the specimen 32, it is composed of the process of releasing the sample sucked in the sample inlet 41 of FIG.

If additional buffer solution is required in the sample processing step (2), as shown in FIG. 3, a separate container 37 is connected to the pump / valve module 8 of FIG. do. Sampling may be directly processed by the subject's body, such as a fingertip, using the sampling module and pump / valve module.

The sampling nozzle is preferably made of a transparent material such as glass, polypropylene, or polycarbonate so that the tester can check the amount of sample to be collected. In case of collecting the sample directly from the subject's body, to prevent contamination and infection. It is preferable to use a disposable nozzle for this purpose.

The result measuring step 3 is performed by the result measuring module 9. When the predetermined time input to the control module 11 of FIG. 2 elapses after the processing of the test specimen in the specimen processing step (2) has elapsed, the result measuring module 38 of FIG. 3 operates to measure the test result. . The measurement of the test results should be carried out using a suitable method depending on the nature of the detection material contained in the chromatographic apparatus. For example, in the case of a reporter material that has a visible color such as colloidal gold or dyed latex, the test result is mainly measured by using an image sensor such as a CCD or a CMOS and emits light particles. In the case of using a luminescent material as a reporter material, the analyte is quantitatively analyzed by using an optical sensor or an optical amplification tube.In the case of using the magnetic material as a reporter material, the magnetic material immobilized in one place by a test reaction is produced. Quantitative analysis by weighing magnetism, but the method of measuring results is not necessarily limited to these methods.

The result display step 4 of FIG. 1 is performed by the result display module 10 of FIG. 2. The result display module 10 is mainly a liquid crystal display device, a printer, a speaker, etc. so that a tester can recognize and use a result. But is not necessarily limited thereto.

The control step 5 is executed by the control module 11 of FIG. 2 and the specimen supply module 6 of FIG. 2, the sampling module 7, the pump / valve module of FIG. 2 for carrying out the respective steps shown in FIG. 1. In (8), the moving distance and the moving speed of the instruments constituting each module are controlled, and in the result measurement module 9, the measurement result value is calculated through the acquisition of the raw data, the processing of the raw data, and the result display module 10 Control the communication with the tester.

1: sample supply step 2: sample processing step
3: result measurement step 4: result display step
5: control step 6: specimen supply module
7: Sampling Module 8: Valve / Pump Module
9: result measurement module 10: result display module
11: control module 31: inspection sample
32: test specimen 33: sampling nozzle
34: sampling arm 35: pump module
36: valve module 37: container
38: measurement module 81: sample collection unit
82: reporter material reaction part 83: immobilization material part
84: absorber

Claims (1)

A specimen supplying step of supplying a test specimen by controlling the position of the specimen to a position into which the specimen can be put or a result measurement according to the signal of the control step;
A sample processing step of collecting a sample and supplying a test solution whose type and amount of use buffer according to the type of the test target material are determined according to the valve opening / closing control of the valve pump module;
A result measuring step of measuring an image of a test result by a specimen and a specimen by controlling a condition value according to the type of analyte;
A result display step of outputting data generated in the result measurement step according to a signal in a control step;
The control signal is transmitted to the specimen supply stage by determining whether the specimen is supplied, the control signal for the type and amount of the buffer used according to the test substance is transmitted to the specimen processing stage, and the condition value control signal according to the analysis type A control step of transmitting the result of the chromatographic image of the specimen detected in the result measuring step to the result display step to control the result display step according to the signal input at each step; Precision analysis method of a biological material using a parallel transfer immunochromatography, characterized in that consisting of.

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