Immunochromatographic detection device and method

Abstract

The invention relates to an immunochromatography detection device and method, comprising a housing, a display provided on the surface of the housing, a test strip provided in the housing with a detection area and a control area, an optical path cavity for the detection area, and a control area The optical path cavity, the measurement control circuit, the test strip sample inlet located at the end of the housing, the optical path cavity of the detection area is provided with a detection line detection window that communicates with the test strip detection area, and the control area The light path cavity is provided with a detection line detection window that communicates with the control area of ​​the test strip. The test strip is a light-transmitting immunochromatography test strip. It is arranged on different sides of the test strip, so that the optical path cavity in the detection area and the optical path cavity in the control area are independent of each other. The detection device of the invention completely isolates the mutual interference between the detection light in the detection area and the control area, enhances the reliability of the detection result, and is easy to operate, and the display result is quantitative and intuitive.

Description

technical field [0001] The invention relates to an immunochromatographic detection device and method. Background technique [0002] Immunochromatography (immunochromatography) is a rapid diagnostic technique that has emerged in recent years. Its principle is to fix specific antibodies on a certain zone of the nitrocellulose membrane, and when the dry nitrocellulose end is immersed in the sample ( After urine or serum), the sample will move forward along the membrane due to capillary action. When moving to the area where the antibody is immobilized, the corresponding antigen in the sample will specifically bind to the antibody. If immunocolloidal gold is used Or immunoenzyme staining can make the area show a certain color, so as to achieve specific immunodiagnosis. [0003] In the field of domestic medical rapid diagnosis in my country, visual inspection is usually used to judge the test results of immunochromatographic test strips, but this judgment varies from person to pe...

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Problems solved by technology

[0004] The Chinese invention patent application with the patent application number 200910214016.1 discloses a method and system for intelligently identifying and reading immunochromatographic test strips and its application. Although it realizes quantitative reading of the detection results of immunochromatographic test strips, but There are the following problems: 1. The operation steps are complicated, the test strip and the reading device are set separately, and the colored test strip needs to be manually placed in the reading device for reading, and it is easy to confuse different test strips

2. The detection area of ​​the test strip and the detection light of the control area are easy to interfere with each other, and the reading result is unreliable

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