Reagent Cassette Ejection Mechanism for Reliable Reagent Release
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Solution Overview
Problem
Existing biological sample testing systems face issues with manual reagent release mechanisms that are prone to incomplete or accidental reagent release, leading to inaccurate test results and contamination risks, and require complex operations.
Innovation Solution
A testing system with a reagent reaction vessel containing a reagent storage portion and a push rod, sealed by a sealing element, which is automatically released using an ejection rod within a test cassette, ensuring complete reagent release and reducing manual handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a thin film is manually torn off to release liquid reagent, then the reagent can be released, but the thin film is likely to be broken or incompletely torn off, resulting in insufficient reagent and test deviation
Solution Approach 1:
The patent replaces the manual mechanical tearing action with an automated mechanical ejection system. The ejection rod, driven by a driving component, pushes the sealing element (thin film) to rupture it in a controlled manner, ensuring complete and reliable reagent release without manual intervention.
Solution Approach 2:
The system performs the reagent release function automatically without requiring manual operation. The ejection rod and driving component work together to automatically rupture the sealing element and release the reagent, making the system self-sufficient and eliminating human error.
2Ease of operation
If the thin film is exposed to air during non-test period, then the thin film can be accessed, but it is prone to tear-off or damage by human or other factors
Solution Approach 1:
The patent replaces manual access to the thin film with an automated ejection rod mechanism. The sealing element remains protected until the ejection rod, driven by the driving component, pushes it to rupture in a controlled manner during the test period.
Solution Approach 2:
The system prepares the sealing element for controlled rupture in advance by positioning the ejection rod and driving component. The sealing element is designed to rupture at a specific location when the ejection rod pushes it, ensuring reliable reagent release while maintaining protection during storage.
3Reliability
If a push rod is used to separate the sealing element, then reagent release can be controlled, but the push rod needs to be precisely positioned and coordinated with the ejection rod
Solution Approach 1:
The patent merges the push rod and ejection rod into a single integrated ejection rod structure. The ejection rod serves both to push the sealing element and to coordinate with the driving component, simplifying the overall mechanism while maintaining precise control over the reagent release process.
Solution Approach 2:
The ejection rod performs multiple functions: it pushes the sealing element to rupture, coordinates with the driving component for automated operation, and ensures precise positioning. This multi-functional design reduces the need for separate components and simplifies the overall system.
Data Source
AI summary
The present invention relates to the field of biological sample testing technology, and in particular, to a testing system. The testing system includes a reagent reaction vessel and a test device. A reagent storage portion and a push rod movable relative to the reagent storage portion are packaged in the reagent reaction vessel, the reagent storage portion comprises at least one reagent containing cavity, and the reagent containing cavity is sealed by a sealing element; and the push rod is connected to the sealing element, and the push rod is used for cooperation with the test device to separate the sealing element from the reagent storage portion. The test device includes a test cassette, wherein an ejection rod is arranged in the test cassette, and the ejection rod cooperates with the push rod to separate the sealing element from the reagent storage portion. According to the present invention, when the reagent storage portion is inserted, the ejection rod can be quickly pushed to operate, and one operation completes multiple functions such as releasing the reagent, fixing the reagent reaction vessel, and focusing on a test area at the same time, thereby simplifying the reaction steps.