Movable Inner Cavity Sample Collection Device
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Solution Overview
Problem
Existing sample collection and testing devices face challenges in maximizing sample volume collection and ensuring thorough mixing or reaction of samples with reagents, especially when dealing with small sample volumes or multiple analytes that require pretreatment.
Innovation Solution
A sample collection and testing device featuring a movable inner cavity within an outer cavity, equipped with a limiting snap ring mechanism and a reaction pad, allows for efficient sample collection, pretreatment, and testing by facilitating the movement of the inner cavity between collection and discharge positions, ensuring thorough sample reaction with reagents and maximizing sample volume usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a traditional test cup or testing device is used to collect samples, then the device structure is simple, but the sample volume collected is limited and cannot be maximized for testing multiple analytes
Solution Approach 1:
The device is divided into an inner cavity and an outer cavity, where the inner cavity collects the sample and the outer cavity receives the sample after the inner cavity is pulled out. This segmentation allows the device to collect maximum sample volume while maintaining a relatively simple overall structure.
Solution Approach 2:
The inner cavity is nested within the outer cavity, with the inner cavity having a smaller volume than the outer cavity. This nesting arrangement allows the sample to be transferred from the inner cavity to the outer cavity, maximizing the usable sample volume for multiple analyte tests.
2Quantity of substance
If samples are collected in small volumes, then the device structure remains simple, but the samples cannot be thoroughly mixed with reagents or treated before testing
Solution Approach 1:
The device includes a reaction pad placed in the outer cavity that can react with the sample in advance before the sample is transferred to the test strip. This preliminary action allows thorough mixing and treatment of the sample, ensuring proper dilution and chemical reactions occur before testing.
Solution Approach 2:
The device separates the collection function (inner cavity) from the treatment and testing functions (outer cavity with reaction pad). This segmentation allows the sample to be thoroughly mixed and treated in the outer cavity before being applied to the test strip, improving the ease of operation for samples requiring pretreatment.
3Productivity
If the inner cavity is fixed in position, then the device structure is simpler, but the sample cannot be efficiently transferred to the outer cavity for testing
Solution Approach 1:
The inner cavity is designed to be movable relative to the outer cavity, allowing it to be pulled out after sample collection. This dynamic design enables efficient sample transfer from the inner cavity to the outer cavity, improving productivity while adding only minimal complexity through a simple movable structure.
Solution Approach 2:
The inner cavity can be extracted or pulled out from the outer cavity after sample collection. This extraction mechanism allows the sample to be efficiently transferred from the inner cavity to the outer cavity for subsequent treatment and testing, improving sample transfer efficiency without requiring a complex automated system.
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 device enables one-stop collection, pretreatment, and testing of liquid samples, improving test accuracy and allowing for the analysis of multiple analytes within a single sample, while ensuring efficient sample transfer and reaction with reagents.
Implementation Method 1
The collection inner cavity is movable between a first position and a second position relative to the collection outer cavity. When the collection inner cavity is at the first position, the liquid sample is collected into the collection outer cavity, and when the collection inner cavity is at the second position, the liquid sample is discharged out of the collection outer cavity.
Implementation Method 2
The collection inner cavity communicates with the collection outer cavity via through holes at a bottom portion of the collection inner cavity.
Data Source
AI summary
The present invention relates to a sample collection and testing device for analyzing and testing an analyte in a liquid sample. The sample collection device includes a collection inner cavity and a collection outer cavity. The collection inner cavity is disposed inside the collection outer cavity. The collection inner cavity communicates with the collection outer cavity via through holes at a bottom portion of the collection inner cavity. The collection inner cavity is movable between a first position and a second position relative to the collection outer cavity. When the collection inner cavity is at the first position, the liquid sample is collected into the collection outer cavity. When the collection inner cavity is at the second position, the liquid sample is discharged out of the collection outer cavity.