Multi-Analyte Liquid Testing Device With Guided Strip Contact
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Solution Overview
Problem
Existing testing devices for liquid samples, particularly urine, are limited to single analyte detection, require manual operation that is unsafe and unsanitary, and lack consistent reaction times across multiple test areas.
Innovation Solution
A device with a chamber and cover system that allows for multiple analyte testing, featuring a transparent chamber with a screw-threaded seal, labeled maximum and minimum liquid levels, and a carrier with grooves for test strips, ensuring consistent sample contact and easy result comparison using colorimetric cards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a reagent strip is used for testing liquid samples, then the testing can be performed, but only one test item can be tested at a time requiring multiple reagent strips
Solution Approach 1:
The patent combines multiple testing areas for different analytes (glucose, protein, ketone, bilirubin, urobilinogen, nitrite, leukocyte, erythrocyte, pH, specific gravity) onto a single reagent strip. This merging of multiple testing functions into one device eliminates the need to use multiple separate reagent strips, thereby improving versatility while reducing device complexity.
2Adaptability or versatility
If multiple test items are placed on a test strip, then multiple analytes can be tested, but each testing area cannot have consistent reaction time
Solution Approach 1:
The patent applies local quality by giving each testing area on the strip specific characteristics optimized for its particular analyte while maintaining uniform overall strip properties. Each testing area has locally tailored reagent concentrations and compositions suited to its specific chemical reaction requirements, yet all areas are positioned to receive consistent sample contact, achieving both multi-analyte capability and reaction time consistency.
3Ease of operation
If manual operation is used for testing, then the test can be performed, but the operation is unsafe and unsanitary
Solution Approach 1:
The patent introduces an intermediary system where the reagent strip is placed in a protective container that mediates between the user and the liquid sample. The container includes a sample application area that allows non-contact sample deposition, and the strip is handled through controlled mechanisms rather than direct manual manipulation, thereby maintaining ease of operation while eliminating safety and hygiene hazards.
4Productivity
If the reagent strip is in local contact with the liquid sample, then the testing can be performed, but the sample contact is insufficient for multiple testing areas
Solution Approach 1:
The patent transitions from traditional point-contact or limited line-contact sample application to a two-dimensional sample distribution approach. The container design allows the liquid sample to spread across a broad surface area that simultaneously contacts multiple testing areas on the strip, effectively adding a dimensional aspect to sample-reagent interaction and ensuring all testing zones receive adequate sample for reaction.
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
Enables safe, hygienic, and efficient multi-analyte testing with consistent reaction times, reducing the risk of false negatives and improving user safety and accuracy.
Implementation Method 1
transparent side walls enclosing the chamber
Implementation Method 2
the color block is used for comparing with the color of the testing areas of the test strip
Data Source
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AI summary
The invention discloses a testing device. The testing device includes: a chamber for receiving a liquid sample; a cover, where the cover is configured to seal the chamber, where the cover further includes a carrier with a groove, the carrier is configured to receive and hold a test strip, the cover further includes a hole that is connected to the groove, and the cover is provided with a label and a connection line between the label and the hole is shortest; and when testing is performed, the label is configured to indicate an inclination direction, such that the liquid sample contacts with testing areas of the test strip in the groove. The testing device can be used for quickly performing testing and is easy to operate, and test results thereof are more accurate.