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Liquid direction cup and detection test paper strip in liquid detection cup

A technology for detecting test strips and test strips, which is applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of inability to perform chromatography normally, hindered by chromatography, and low success rate of sample loading, etc., so as to solve the problem of blocked chromatography, Ensure effective sample loading and high sample loading success rate

Inactive Publication Date: 2015-09-30
GUANGZHOU WONDFO BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chromatographic process is as follows: when the test strip sample is just started, there is a certain gap between the test strip surface and the covering film layer, and the gas in the test strip is squeezed by the external liquid, and part of it will be discharged through the gap, but The test strip swells rapidly after absorbing water, and the cover film is closely attached to the water-absorbing and swollen test strip. The gap is quickly filled and disappears, and the gas in the test strip can no longer be discharged from here. At this point, the test strip is completely sealed stand up
And because the chromatographic reaction of the test strip occurs by capillary action, if the gas pressure in the test strip is greater than the pulling force generated by the capillary action, that is, if the capillary action pulling force cannot overcome the resistance generated by the gas in the test strip, the layer of the test strip will The analysis function will be hindered and the chromatography cannot be performed normally
As a result, the sample liquid cannot continue to be chromatographed under the traction of the absorbent paper, and the chromatography is hindered, slowed down or even stopped, resulting in the suspension of the reaction and the failure of the test. Therefore, the success rate of sample loading is low when using this test cup for testing

Method used

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  • Liquid direction cup and detection test paper strip in liquid detection cup
  • Liquid direction cup and detection test paper strip in liquid detection cup
  • Liquid direction cup and detection test paper strip in liquid detection cup

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A detection test strip, such as figure 1 As shown, a bottom plate 110 is included, and a sample pad 120, a marker pad (131, 132), a coating film 140 and an absorbent paper 150 are successively overlapped on the bottom plate 110, and a detection line and a quality control line are provided on the coating film 140. In this embodiment, the coating film is a nitrocellulose membrane, and the marking pads are two pieces (respectively the first marking pad 131 and the second marking pad 132), which are overlapped sequentially along the chromatography direction of the test strip. connected together, and the two marking pads are cut off from the middle of the conventional marking pads, and their lengths are both 4mm, such as Figure 6 shown.

[0038] In this embodiment, the marking pads have a thickness of 0.3 mm and a length of 4 mm, and the length of the overlapped part is 2 mm, which is 1 / 2 of the length of the marking pads. The thickness of the sample pad is 0.3-1 mm, and ...

Embodiment 2

[0042] A liquid detection cup, such as Figure 7-8 As shown, it includes a cup body 400, a test paper card board 300, a transparent cover film 200 and the test paper strip 100 in Embodiment 1; the test paper card board 300 is placed in the cup body 400, and a test paper slot 310 is provided on it. The test strip 100 is placed in the test strip slot 310 , and the covering film 200 is covered on the surface of the test strip 100 by the opening of the test strip slot.

[0043] In this embodiment, the distance from the bottom edge of the cover film to the bottom edge of the test strip is 2 / 3 of the length of the sample pad.

Embodiment 3

[0045] A liquid detection cup, which is basically the same as the liquid detection cup in embodiment 2, the main difference is:

[0046] The lengths of the marking pads are respectively 5 mm, and the length of the overlapped parts overlapping each other is 2.5 mm. The overlapping portion of the sample pad and the marker pad is 3 mm in length, which is 3 / 5 of the length of the marker pad.

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Abstract

The invention relates to a liquid direction cup and a detection test paper strip in the liquid detection cup and belongs to the technical field of bioinstrumentation. The detection test paper strip comprises a bottom plate, wherein a sample cushion, at least two mark cushions, a covering film and water absorption paper are overlapped with one another on the bottom plate; detection lines and quality control lines are arranged on the covering film; the at least two mark cushions are overlapped with one another. According to the liquid direction cup and the detection test paper strip, the at least two mark cushions are arranged and are overlapped with one another, so that the problem that chromatography is blocked as the test paper strip is completely sealed in the prior art can be relatively well solved, and the advantage that the sample feeding success rate is high can be realized.

Description

technical field [0001] The invention relates to the technical field of biological detection, in particular to a liquid detection cup and a detection test strip therein. Background technique [0002] The existing colloidal gold immunochromatographic liquid detection cup can be used for qualitative or quantitative detection of liquids such as urine and blood, such as qualitative detection of drug items on urine. The test paper card board is provided on the wall of the test cup, and the test paper card board is provided with a test paper slot for placing a test paper strip. The test paper strip used for testing is embedded in the test paper slot for use. , marking pad, nitrocellulose membrane, and absorbent paper are sequentially lapped and pasted on the bottom plate to form a conventional test strip. [0003] When a test is required, the urine test cup is given to the patient who needs to be tested, and the patient is allowed to fill the urine by himself. However, the patient...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/558
CPCG01N33/558
Inventor 陈立郑辉陈占文孙敏王继华
Owner GUANGZHOU WONDFO BIOTECH
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