Rotating Cavity Fluid Specimen Mixing Device
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Solution Overview
Problem
Existing devices for collecting and testing fluid specimens, such as saliva, often result in specimen pollution or infection during extrusion and are inconvenient for mixing with buffer solutions, as they require external force and may not ensure adequate mixing for further tests.
Innovation Solution
A device with interconnected first and second cavities that allow for mutual rotation, where the volume of the first cavity can be reduced to facilitate fluid flow into the second cavity, ensuring adequate mixing with a buffer solution, using a moving element like a slot or compressible carrier to absorb and extrude specimens efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If specimens are extruded into the collection cavity under external force, then specimens can be collected, but specimens may result in pollution or infection through contact with operator
Solution Approach 1:
The device is divided into separate functional modules: a collection cavity for receiving specimens, a storage cavity for buffer solution, and a mixing cavity for combining them. This segmentation allows each component to perform its function independently, reducing cross-contamination risks while maintaining ease of operation through modular design.
Solution Approach 2:
The patent introduces an intermediary mechanism (the movable partition or rotating structure) that transfers specimens from the collection cavity to the storage cavity without direct operator contact. This intermediary system automates the transfer process, eliminating the need for manual extrusion and reducing infection risks.
2Manufacturing precision
If specimens are mixed with buffer solution, then adequate mixing facilitates further tests, but existing devices are inconvenient for operation
Solution Approach 1:
The device employs dynamic mixing mechanisms such as a movable partition that can shift positions or a rotating structure that搅动 the fluid mixture. These dynamic elements automatically mix specimens with buffer solution through motion, ensuring adequate mixing without requiring manual intervention or complex operational steps.
Solution Approach 2:
The collection, storage, and mixing functions are merged into a single integrated device. The movable partition or rotating structure simultaneously performs multiple functions: separating cavities, transferring specimens, and mixing solutions. This combination simplifies operation while ensuring adequate mixing for subsequent tests.
3Quantity of substance
If the volume of the first cavity is reduced, then fluid flows into the second cavity, but the first cavity must be designed with variable volume
Solution Approach 1:
The first cavity is designed with a movable partition or rotating structure that dynamically changes its effective volume. When the partition moves or the structure rotates, the cavity volume decreases, automatically forcing fluid to flow into the second cavity. This dynamic design achieves efficient fluid transfer without requiring complex multi-component systems.
Solution Approach 2:
The movable partition or rotating structure serves multiple functions: it defines the boundary of the first cavity, changes the cavity volume to drive fluid flow, and may also assist in mixing operations. This multi-functionality reduces the need for separate components, thereby simplifying the overall device structure while achieving effective fluid transfer.
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 easy collection, storage, and transportation of fluid specimens while ensuring full and even mixing with buffer solutions, facilitating further tests by allowing fluid specimens to flow into the second cavity for adequate mixing and processing.
Implementation Method 1
the volume of the first cavity rotated to the second position is reduced compared to the volume of the first cavity rotated to the first position to facilitate fluid inside it to flow into the second cavity
Data Source
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AI summary
This invention is related to a device for collection and test of fluid specimens, comprising a first cavity and a second cavity; wherein, the first cavity is located inside the second cavity; furthermore, the first and second cavities are interconnected; the said first cavity is available for mutual rotation with the second cavity to facilitate fluid to flow between them; the first cavity is provided with a first position and a second position inside the second cavity. The device of this invention can ensure adequate and uniform mixing of fluid inside the second cavity to facilitate further tests.