Compressible Absorbent Sample Collector for Fluid Analysis
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Solution Overview
Problem
Existing sample collection and test devices are inefficient in extracting and storing fluid samples for confirmation testing, often requiring complex designs and expensive materials, and fail to allow for sample preservation after initial testing.
Innovation Solution
A device with a compressible absorbent sample collector and a receiving cup that secures in a locked position, allowing the absorbent material to be compressed and fluid to be extracted onto a test element for analyte detection, using screw threads or snap fit connections, and enabling sample storage for later confirmation testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a syringe type fluid sampling device is used, then fluid sample collection is achieved, but the collected fluid sample cannot be saved for confirmation testing at a later time
Solution Approach 1:
The absorbent member is placed inside the sample collector, which is then inserted into the receiving cup. The test element is nested within the sample collector structure. This nested arrangement allows multiple functions (collection, storage, testing) to be integrated in a compact design without requiring complex external systems.
Solution Approach 2:
The sample collector serves multiple functions: it collects the fluid sample, stores it for later testing, and facilitates transfer to the test element. The absorbent member both absorbs the sample and enables its transfer. This multi-functionality eliminates the need for separate collection and storage devices.
2Productivity
If filter paper is used to collect saliva, then sample collection is achieved, but sample extraction efficiency is poor
Solution Approach 1:
The absorbent member is compressed during the transfer process by inserting the sample collector into the receiving cup. This compression changes the physical state of the absorbent material, forcing the absorbed sample to be expelled onto the test element, thereby improving extraction efficiency.
Solution Approach 2:
Instead of using complex mechanical extraction systems, the invention uses a simple compression mechanism achieved by the insertion motion itself. The mechanical action of inserting the sample collector into the receiving cup automatically compresses the absorbent member and transfers the sample.
3Reliability
If complex sample collection devices are used, then sample collection capability is achieved, but manufacturing cost increases
Solution Approach 1:
The device is divided into separate components: the sample collector, the receiving cup, the absorbent member, and the test element. This segmentation allows each component to be manufactured independently using simple, cost-effective methods and then assembled, reducing overall manufacturing complexity and cost.
Solution Approach 2:
The sample collector and absorbent member are designed as disposable components that can be manufactured at low cost. After a single use, they are discarded, eliminating the need for expensive, reusable materials and complex sterilization systems.
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 effectively detects the presence or amount of analytes in fluid samples, such as saliva, by compressing the absorbent material to extract the sample onto a test element, allowing for both immediate analysis and later confirmation testing without leakage or flooding, using cost-effective materials and simplified design.
Implementation Method 1
a compressible absorbent member for collecting the fluid sample
Implementation Method 2
an absorbent material configured so that the sample collector is conveniently placed into the mouth of a test subject
Implementation Method 3
the absorbent member to be compressed and sample to be extracted and moved onto a test element
Implementation Method 4
This causes the absorbent material to be compressed and sample to be extracted
Data Source
AI summary
A device for detecting the presence or amount of an analyte in a fluid sample and method thereof, comprises a sample collector and a receiving cup for receiving and holding the sample collector within the receiving cup. The sample collector contains a compressible absorbent member for collecting the fluid sample, and has a first position and a second, locked position within the receiving cup. The absorbent member is uncompressed in the first position and is compressed in the second, locked position. The sample collector or the receiving cup has at least one test element having reagents for detecting the presence or amount of the analyte in the fluid sample.