Anti-flooding Channel Structure for Analyte Detection
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Solution Overview
Problem
Traditional detection cards with test strips often experience flooding issues due to unordered liquid flow, which disrupts the normal functioning and accuracy of the test strips, leading to inaccurate detection results.
Innovation Solution
The detection card incorporates an anti-flooding structure within the channel, which narrows the cross-sectional area at specific points to control fluid flow, reducing the likelihood of flooding and ensuring the test strip operates effectively by minimizing contact with the channel wall, thus allowing capillary action to function properly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the channel opening is wide to allow sample entry, then ease of operation is improved, but flooding into the channel increases
Solution Approach 1:
The channel is segmented into different sections with varying cross-sectional areas. The channel includes a first section with a larger cross-sectional area near the opening for easy sample entry, and a second section with a smaller cross-sectional area downstream to restrict flooding. This segmentation allows the channel to simultaneously accommodate easy sample application and prevent excessive liquid flow into the test strip area.
2Reliability
If the channel cross-sectional area is reduced to prevent flooding, then reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The channel exhibits local quality variations along its length. The first section near the opening has a larger cross-sectional area to facilitate sample application, while the second section downstream has a smaller cross-sectional area to prevent flooding. This local differentiation allows each section to perform its specific function optimally without compromising the other.
3Measurement precision
If the channel is narrow to maintain capillary action, then measurement precision is improved, but productivity decreases due to slower sample flow
Solution Approach 1:
The channel is divided into two functional sections: the first section with larger cross-sectional area enables faster sample flow and higher productivity, while the second section with smaller cross-sectional area maintains strong capillary action for precise detection. This segmentation resolves the contradiction between flow speed and detection precision by providing both conditions in different locations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The anti-flooding structure significantly reduces the flooding phenomenon by 20-30%, enhancing the detection performance and maintaining the integrity of the capillary action, resulting in more accurate and reliable detection results.
Implementation Method 1
ensuring the test strip operates effectively by minimizing contact with the channel wall, thus allowing capillary action to function properly
Data Source
AI summary
The present invention provides an apparatus for detecting an analyte in liquid sample, including a channel for arranging the test strip, with one opened end and the other end is closed, wherein the channel includes an anti-flooding structure where the cross sectional area of the channel is reduced. The apparatus provided in the present invention can prevent the flooding phenomenon of the test strip, and reduce the error rate.