Disposable Test Strip with Pressing Part for Cross-Infection Prevention
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Solution Overview
Problem
Existing test strips for self-monitoring blood glucose levels are prone to cross-infection due to blood contamination and have complex, cumbersome devices that are difficult to use and maintain, leading to frequent malfunctions.
Innovation Solution
A test strip design featuring an inner sampling area around a sampling hole that guides samples into reaction areas, combined with a pressing part to facilitate blood flow and prevent cross-infection, used in conjunction with a test device that integrates sampling and testing functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a lancing device is used repeatedly for blood sample collection, then the device can be used multiple times, but cross-infection occurs due to blood contamination on the contact area
Solution Approach 1:
The test strip is designed as a disposable item that is discarded after a single use. The sampling area on the test strip comes into contact with the user's blood, and the entire test strip is thrown away after one test, eliminating the risk of cross-infection while maintaining productivity through continuous use of new strips.
2Adaptability or versatility
If a test device combines lancing device and test meter, then sampling and testing functions are integrated, but the structure becomes complicated and difficult to use and maintain
Solution Approach 1:
The system is divided into separate functional modules: a simple lancing device for sample collection and a test meter for analysis, with the test strip serving as the connecting interface. This segmentation allows each component to remain structurally simple while achieving integrated functionality through the test strip's sampling and testing capabilities.
3Adaptability or versatility
If a complex test device structure is used, then sampling and testing functions are combined, but the device tends to be out of order frequently
Solution Approach 1:
The test strip performs self-contained sample collection and guiding functions through its integrated sampling area and channels. The strip automatically guides the blood sample from the sampling area through predefined channels to the reaction area, eliminating the need for complex mechanical sampling mechanisms and reducing points of failure in the overall system.
4Measurement precision
If blood sample collection and testing are performed by different devices, then each device can be specialized, but the overall system becomes complicated
Solution Approach 1:
The test strip merges the sampling function and testing function into a single integrated component. The sampling area, sampling channels, and reaction areas are all part of the same test strip, which is then inserted into the test meter for analysis. This merging simplifies the overall system while maintaining the precision of specialized testing through the dedicated reaction areas and electrode configurations.
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 test strip enables easy sample collection and electrochemical testing while preventing cross-infection and simplifying the test device structure, reducing maintenance and operational issues.
Implementation Method 1
an inner sampling area disposed around a sampling hole of the test strip is used to collect samples and guide samples entering to at least one reaction area
Implementation Method 2
The specific enzyme reagents react with glucose in the blood sample and electrochemical reaction occurs. Then the test meter measures an electric current generated
Implementation Method 3
at least one pressing part located around a sampling hole. The pressing part is used to press against a test area of a person to be tested, allowing samples flowing from the test area
Data Source
AI summary
A test strip is revealed. The test strip includes a detection area, at least one outer sampling area, and a circuit system. The detection area includes a sampling hole, at least one sampling channel corresponding to the sampling hole, and at least one reaction area in the sampling channel. An inner sampling area is disposed around the sampling hole and an inner sampling opening is on an edge of the inner sampling area for communicating with the sampling channel and the sampling hole. The outer sampling area is located on an outer side of the test strip. The outer sampling area includes an outer sampling opening in communication with the sampling channel. The circuit system is electrically connected to the reaction area. The test strip further includes at least one pressing part located around the sampling hole for pressing against a test area and preventing cross-infection.