Sample Collection Device Hollow Cavity Absorption Rod
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Solution Overview
Problem
Existing sample collection devices for fluid samples, such as saliva, are uncomfortable for users due to adhesive materials and require excessive force to collect and transfer samples, leading to incomplete collection and operator discomfort, especially for female operators.
Innovation Solution
A sample collector design featuring a collection rod with an absorption element connected via a hollow cavity, eliminating adhesive contact and using engaging teeth and a gasket for secure attachment, along with an extrusion cylinder for efficient sample extraction, facilitating easier and more complete sample collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive materials are used to bond the absorption element to the collection rod, then the absorption element is securely fixed, but the subject experiences discomfort and safety concerns due to chemical exposure
Solution Approach 1:
The invention extracts and removes the adhesive material from the system by replacing the bonding mechanism. The absorption element is no longer bonded with glue but is instead retained through the hollow cavity structure where the collection rod passes through the absorption element, eliminating chemical exposure while maintaining secure fixation.
Solution Approach 2:
The hollow cavity of the absorption element serves as an intermediary structure that replaces the adhesive bonding function. The collection rod passes through this cavity, creating a mechanical retention system that eliminates the need for chemical adhesives while maintaining the secure connection between components.
2Productivity
If pressure is applied through the collection cavity and handle to squeeze the absorption element, then the sample can be transferred out, but excessive force is required making operation difficult especially for female operators
Solution Approach 1:
The invention segments the sample transfer function by introducing a separate extrusion cylinder that independently performs the squeezing action on the absorption element. This separates the sample transfer mechanism from the collection handle, allowing for more efficient force application without requiring the operator to exert excessive force on the handle.
Solution Approach 2:
The manual squeezing action previously required from the operator is replaced by an automated or assisted extrusion mechanism. The extrusion cylinder provides the mechanical force needed to compress the absorption element and transfer the sample, substituting the operator's manual force with a more efficient mechanical system.
3Device complexity
If the absorption element is placed inside the collection cavity, then the structure is compact, but a large force is required to squeeze and compress the absorption element through the cavity
Solution Approach 1:
The invention changes the dimensional arrangement by having the collection rod pass through the absorption element rather than placing the absorption element inside the collection cavity. This dimensional reconfiguration allows for more efficient force application during extrusion while maintaining structural compactness, as the rod-transThrough configuration provides direct mechanical leverage.
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 design enhances user comfort, reduces the force required for sample collection, and ensures more complete sample transfer, making the process safer, simpler, and labor-saving while maintaining environmental friendliness.
Implementation Method 1
an absorption element, wherein the absorption element is provided with a hollow cavity
Data Source
AI summary
A sample collection and detection device includes a collection cavity. The device further includes a sample collector. The sample collector comprises a collection rod and an absorption element, and the absorption element has a hollow cavity. A part of the collection rod is received in the hollow cavity of the absorption element. A first lug for blocking and locating the absorption element is arranged on the collection rod. Also provided is a method for collecting and detecting sample using the sample collection and detection device.