Secure Sampling Cassette for Aerosol Nanoobject Integrity
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Solution Overview
Problem
Existing aerosol sampling methods face challenges in ensuring the integrity and traceability of samples, particularly due to the risk of unauthorized opening of sampling cassettes, which can lead to contamination, loss of material, and invalidation of analysis.
Innovation Solution
A secure sampling cassette design featuring clipping means that are inaccessible from the outside, even with tools, and requiring removal from the device for opening, combined with an integrated detection system for unauthorized access, ensuring the cassette remains sealed during sampling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cassette is designed with easily accessible opening mechanisms, then the ease of operation is improved, but the reliability of sample integrity deteriorates due to unauthorized opening
Solution Approach 1:
A detection system acts as an intermediary between the cassette opening mechanism and the external environment. This system monitors the cassette status and triggers an alert when unauthorized opening is detected, thereby protecting sample integrity while maintaining operational accessibility.
Solution Approach 2:
The cassette incorporates a detection system that provides feedback about its opening status. When the cassette is opened, the system detects this change and generates an alert signal, creating a feedback loop that ensures sample integrity monitoring while allowing operational access.
2Reliability
If the cassette opening mechanism is made inaccessible from outside, then the reliability of sample integrity is improved, but the ease of operation deteriorates
Solution Approach 1:
The detection system serves as an intermediary that mediates between the need for secure closure and operational accessibility. It allows the cassette to remain securely closed during sampling while enabling controlled opening when needed, with automatic detection and alerting to maintain integrity.
Solution Approach 2:
The cassette system performs self-monitoring through its integrated detection mechanism. The system automatically detects opening events and generates alerts without requiring external monitoring, thereby maintaining sample integrity while allowing authorized operation.
3Reliability
If the cassette design includes secure locking mechanisms, then the reliability of sample integrity is improved, but the device complexity increases
Solution Approach 1:
The detection system acts as a relatively simple intermediary component that adds monitoring capability without requiring complex locking mechanisms. This approach maintains sample integrity through detection and alerting rather than through mechanical complexity.
Solution Approach 2:
The system uses a feedback-based approach with a relatively simple detection mechanism rather than complex mechanical locks. The detection system monitors cassette status and provides feedback through alerts, achieving reliable sample integrity protection with minimal added complexity.
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 solution enhances the security and traceability of aerosol samples by preventing unauthorized access and contamination, maintaining the integrity of the sample until analysis, while also reducing manufacturing costs and improving ergonomics and storage efficiency.
Implementation Method 1
a porous sampling filter capable of trapping nano-objects likely to be suspended in the aerosol
Implementation Method 2
a sampling device incorporating a suction pump and a housing in which the cassette, in the assembled configuration of the two parts, can be removably fixed to perform the sampling of contaminants by the suction pump
Data Source
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Figure 4A~5
AI summary
The present invention relates to an assembly for picking and transporting nanoobjects, comprising: a cassette consisting of a first and a second component which are provided with means of mutual assembly and with means for holding the filter, the first and second components defining, when the components are in their assembled configuration, a cavity in which the filter is housed and held therein, the means of mutual assembly comprising first clipping means secured to the first component, second clipping means secured to the second component and able to collaborate with the first means so as to clip the two components together; a picking device comprising suction means and to which the cassette is able to be removably attached, the clipping means being configured not to be accessible from the outside when the components are in the assembled configuration with the cassette fixed to the device.