Quantitative sampling and diluting device and method

Abstract

The invention discloses a quantitative sampling and diluting device and a quantitative sampling and diluting method. The device comprises a sample quantitative extracting component and a sample diluting vessel; the sample quantitative extracting component comprises an upper cover part and a lower sample extracting device which are arranged in a split manner, the lower sample extracting device comprises a capillary and a bearing part used for bearing the capillary, the upper end of the bearing part is buckled with the upper cover part, the lower end of the bearing part is adaptive to an opening end of the sample diluting vessel; the bearing part is provided with a through sampling hole, the upper cover part is provided with an upper cover plug, the shape of the outer wall of the upper cover plug is adaptive to that of the inner wall of the sampling hole; the upper cover plug blocks the sampling hole when the upper end of the bearing part is buckled with the upper cover part; and the capillary is arranged inside the sample diluting vessel through the bearing part. Therefore, a sample is diluted quantitatively, and the quantitative sample can also be moved to a kit to conduct a biochemical reaction.

Description

technical field [0001] The invention relates to a quantitative sampling dilution device and a method thereof, which are used for quantitative sampling dilution and mixing of trace samples. Background technique [0002] Immunolateral flow-through diagnostic technology is a stable and practical technology suitable for use in various point-of-care tests (POCT) or on-site. [0003] In the existing quantitative sampling device, after the sample is diluted and mixed, the liquid drops are dripped from the drip port above. This design has an advantage in the test of the finalized product because of its simplicity. However, in the case of quantitative product addition, the risk of adding one or two drops more or less by the operator brings a lot of uncertainty to the product quantification. At the same time, due to the generation of bubbles in the process of rotating and mixing the liquid up and down, in the process of dripping, the first drop of liquid will contain bubbles and the ...

AI Technical Summary

Problems solved by technology

However, if the sample is added to the quantitative product, the risk of the operator adding or adding one or two drops will bring a lot of uncertainty to the product quantification.

At the same time, due to the bubbles generated in the process of rotating the liquid up and down, it will cause the first drop of liquid to contain bubbles in the process of dripping, and the amount of liquid added will be inaccurate.

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