Sliding Biological Test Cassette With Flexible Tube Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional biological test cassettes require complex structures with high processing accuracy and high failure rates due to the need for precise sealing between separate chambers, leading to increased costs.
Innovation Solution
A biological test cassette design featuring a support, cassette body, and a chip with flexible connecting tubes that allow the chip to be slidably pulled out and pushed back, ensuring smooth fluid transfer between chambers without obstructing the connecting tubes, thereby simplifying the structure and reducing processing requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressure contact between two structural elements is adopted for sealing the docking channel, then sealing between chambers is achieved, but the structure becomes complex and requires extremely high processing accuracy
Solution Approach 1:
The patent merges the sealing function into the flexible membrane itself, which naturally conforms to the docking channel geometry through elastic deformation. This eliminates the need for separate sealing structures and pressure contact mechanisms, thereby reducing structural complexity while maintaining reliable sealing between the pretreatment chamber and analysis chamber.
Solution Approach 2:
The patent utilizes the elastic properties of the flexible membrane to achieve sealing through deformation rather than rigid pressure contact. By changing the physical state from rigid-to-rigid pressure contact to flexible-to-geometry conformation, the system reduces processing accuracy requirements while maintaining sealing reliability.
2Reliability
If pressure contact between two structural elements is adopted for sealing the docking channel, then sealing between chambers is achieved, but processing accuracy requirements become extremely high
Solution Approach 1:
The patent changes the sealing mechanism from rigid pressure contact requiring high dimensional accuracy to flexible membrane deformation that adapts to the docking channel geometry. The flexible membrane's elasticity allows it to conform to slight variations in manufacturing tolerances, significantly reducing processing accuracy requirements while maintaining reliable sealing.
Solution Approach 2:
The patent employs a flexible membrane as the sealing element, which can deform elastically to match the docking channel shape. This flexible sealing approach eliminates the need for extremely precise rigid sealing surfaces, thereby reducing manufacturing precision requirements while ensuring reliable sealing between chambers.
3Ease of operation
If the chip is exposed during analysis operations, then external testing can be performed, but the chip is at risk of damage
Solution Approach 1:
The patent divides the system into a removable chip module and a stationary support structure. The chip can be extracted from the support for external analysis operations, then returned for protection. This segmentation allows the chip to be accessible when needed and protected when not in use, balancing operational accessibility with chip protection.
Solution Approach 2:
Instead of having the chip permanently exposed or fixed in place, the patent inverts the approach by making the chip removable and returnable. The chip is protected by default in the support, and only exposed temporarily when extracted for analysis, thereby reversing the typical exposure-protection paradigm to achieve both accessibility and protection.
Data Source
AI summary
The present disclosure relates to a biological test cassette and a medical test system, the biological test cassette comprising a support, a cassette body, a chip, a first connecting tube and a second connecting tube. The support is provided with a first via hole. The cassette body is provided with a second via hole corresponding to the position of the first via hole, mounted on a top surface of the support, and further provided with a pretreatment chamber and a first flow channel in communication with the pretreatment chamber. The chip is slidably provided on a bottom surface of the support, and provided with an analyzing and processing chamber and a second flow channel in communication with the analyzing and processing chamber. The second connecting tube can be freely bent and deformed during the process of pulling the chip out from or pushing the chip back into the support.