Detection Device Lid With Sheath and Through Hole for Liquid Sample Control
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Solution Overview
Problem
Traditional devices for detecting liquid samples, such as urine for illegal drugs, face issues with sample leakage and inaccurate sample amounts, leading to incomplete or failed detections due to insufficient or excessive sample volumes.
Innovation Solution
A detection device with a cup lid featuring a sample inlet and a through hole that allows gas circulation while preventing liquid entry into the detection chamber, combined with a sheath to control liquid levels and a protrusion for stable orientation, ensuring accurate and quantified sample analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cup is reversed to allow sample entry into the detection device, then the sample can contact the detection reagent, but liquid sample may flood the detection chamber causing inaccurate detection
Solution Approach 1:
The patent applies local quality by creating different functional zones within the detection chamber. The first region has an open structure to receive liquid sample, while the second region contains the detection reagent. This spatial differentiation allows the sample to be received in one area without flooding the reagent area, solving the contradiction between sufficient sample contact and preventing overflow.
Solution Approach 2:
The detection chamber is segmented into distinct regions: a sample receiving area and a reagent detection area. This segmentation prevents the liquid sample from directly contacting and flooding the detection reagent, while still allowing controlled interaction for accurate detection.
2Quantity of substance
If the sample inlet allows liquid passage from collection chamber to detection chamber, then sample transfer is enabled, but gas circulation is blocked
Solution Approach 1:
The patent segments the fluid passage functionality by providing separate pathways: the sample inlet is dedicated to liquid sample transfer, while the through hole provides a separate pathway for gas circulation. This segmentation allows both liquid and gas to move freely through the device without interfering with each other, eliminating the need for complex valve mechanisms.
3Ease of operation
If the through hole allows gas circulation between detection chamber and collection chamber, then gas exchange is improved, but liquid sample may enter through the through hole
Solution Approach 1:
The patent applies local quality by positioning the through hole at a different location and orientation than the sample inlet. The through hole is configured specifically for gas circulation, while the sample inlet is positioned to receive liquid sample. This spatial differentiation ensures that gas can circulate through the through hole without liquid sample entering, preventing contamination while maintaining ease of gas exchange.
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 device maintains a consistent liquid sample volume in the detection chamber, allowing for accurate and reliable detection by preventing flooding and ensuring sufficient sample contact with the reagent strip, thereby enhancing detection accuracy and reliability.
Implementation Method 1
a through hole that allows gas but not liquid to pass through
Implementation Method 2
a sample inlet that allows liquid to pass from the collection chamber into the detection chamber
Data Source
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AI summary
A detection device and a detection method are disclosed. The detection device comprises a sample inlet (132) that allows liquid samples flowing from a collection chamber (20) to a detection chamber (10), which comprises a through hole (135) that allows gases circulation between the detection chamber and the collection chamber, and a sheath (140) that prevents liquid samples from entering into the detection chamber from the collection chamber via the through hole. The detection chamber contains test reagent strips (120) to detect whether samples contain interested analytes. The detection device further comprises a protrusion (131) that enables the detection device standing tilted in the traverse direction. The detection method comprises collecting liquid samples as the first step, followed by standing the device tilted in its traverse direction through a protrusion support, and detecting whether samples contain the analytes.