Integrated Stool Sample Collection Detector with Valve Assembly
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Solution Overview
Problem
Current stool testing methods face challenges such as contamination, difficulty in sample collection and handling, and lack of appropriate devices for convenient sampling and testing, leading to low testing rates due to the need for professional handling and storage of stool samples.
Innovation Solution
A sample collection detector integrating a sampling device with a sampling chamber and a communicating device, featuring a valve assembly that allows for controlled sample delivery and detection, enabling quantitative sampling and closed detection of sample mixtures, thus addressing the challenges of contamination and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional open stool testing methods are used, then testing can be performed, but contamination and spillage occur, and handling is inconvenient
Solution Approach 1:
The patent merges the sampling chamber, buffer solution container, and detection device into a single integrated closed system. The sampling needle penetrates the sealing membrane to deliver stool samples directly into the buffer solution without opening the system, eliminating contamination risks while maintaining ease of operation through unified design.
Solution Approach 2:
The patent employs a sealing membrane (thin film) that allows the sampling needle to penetrate through it for sample delivery while maintaining the closed state of the system. This flexible film structure enables controlled access to the buffer solution without compromising the integrity of the closed system, preventing contamination and spillage.
2Measurement precision
If manual stool sampling is performed, then samples can be collected, but sampling size control is difficult and professional handling is required
Solution Approach 1:
The sampling needle is designed to be self-limiting in its penetration depth through the sealing membrane, automatically controlling the sampling size without requiring professional operation. The needle's structure and the membrane's properties work together to ensure consistent sample delivery, enabling non-professionals to perform accurate sampling.
Solution Approach 2:
The buffer solution is pre-prepared and sealed in the detection device before use. The sampling chamber is pre-loaded with stool samples. When testing, the user simply needs to penetrate the membrane with the sampling needle, and the pre-arranged system automatically controls the sampling process and size, eliminating the need for complex professional handling procedures.
3Ease of operation
If stool samples are dissolved in buffer solution, then immunodetection can be performed, but the process is scattered and inconvenient to carry
Solution Approach 1:
The patent combines the sampling chamber, buffer solution container, mixing mechanism, and detection device into a single portable integrated unit. This merging eliminates the need for multiple separate containers and operations, making the system convenient to carry while performing complete stool dissolution and detection in one device.
Solution Approach 2:
The detection device serves multiple functions: it stores the buffer solution, receives stool samples through the sealing membrane, performs mixing/dissolution, and conducts immunodetection. This multi-functionality reduces the number of separate devices needed, improving portability without oversimplifying the integrated system's capabilities.
Data Source
AI summary
The present invention provides a sample collection detector, comprising a sampling device, a detecting device and a communicating device, wherein the sampling device has a sampling chamber and a sample feeding rod, the sample feeding rod is inserted into the sampling chamber to finish sampling; the communicating device has a sample feeding channel that is in communication with the sampling chamber and detecting device, a valve assembly is provided between the sample feeding channel and the sampling chamber, the valve assembly is initially closed, the sample feeding channel is separated from the sampling chamber, the sample feeding rod triggers the valve assembly to open and communicate the sample feeding channel and the sampling chamber.