Micro-column gel card agglutination test result identification system and blood type analyzer

Abstract

A micro-column gel card agglutination test result identification system comprises: an image collection module, a micro-tube image capturing module, a target region acquisition module, an effective reactant region capturing and identification module, a standard setting module, and a determining and outputting module. The system performs fitting with respect to a boundary of an inner wall of a micro-tube automatically by means of a binary processing unit and a fitting and line-drawing unit and acquires a reaction region within the boundary of the inner wall of the micro-tube to be a target region for analysis, thus preventing a portion of the image outside the region from interfering with the analysis and determination, effectively increasing the accuracy of determination, thereby enabling the system to be applied to a variety of micro-column gel cards having different specifications and improving the universality thereof for analyzers of different specifications. The accuracy of result identification is increased by performing a classification determination, based on both a brightness position and relative area, on the effective reactant region in the target region under analysis, and then performing a comparative analysis of a coarse classification and a fine classification.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a microcolumn gel card agglutination detection result recognition system and a blood type analyzer. Background technique [0002] At present, clinical blood testing generally adopts the cassette detection method with simple operation, clear results and stability. To control the size of the gel gap, so that the gap can only allow free red blood cells to pass through, so that free red blood cells and aggregated red blood cells are separated. The detection principle is: when the antigen and antibody react, the blood cells agglutinate, and when centrifuged, the agglutination cannot pass through the gap of the gel, but stays in the upper layer of the gel tube, and the reaction is positive. Unagglutinated blood cells can pass through the gel gap during centrifugation and settle at the bottom of the gel tube, giving a negative reaction. [0003] In an automated blood analyzer, t...

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Problems solved by technology

However, the above-mentioned method of directly intercepting the image of the reaction area of ​​a fixed size in the microtube for analysis is only applicable to a certain size of the microcolumn gel card. When the width of the microcolumn gel card used is different, the intercepted reaction area It is not comprehensive, or the interception area is too large, which may affect the final analysis results and cause misjudgment.

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