Tamper Evident IV Needle Cap with Segmented Locking Clasp
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Solution Overview
Problem
Existing tamper-resistant solutions for IV needle assemblies lack a secure and evident mechanism to prevent unauthorized use while ensuring visual indication of tampering.
Innovation Solution
A two-part cover assembly with a needle receiving portion and a cap clasp portion featuring trans-axially aligned closure clasp and dual spaced locking tabs, which transitions from an open access position to a closed locked position, providing a tamper-evident and resistant barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hinged tamper proof cover is used, then the cover can be opened to access the needle, but the mechanism becomes complex and may not provide clear visual indication of tampering
Solution Approach 1:
The cover is divided into two distinct parts: a base portion that receives the needle and a separate clasp portion that provides locking functionality. This segmentation allows each part to perform its specific function independently, simplifying the overall mechanism while maintaining tamper resistance through the engagement interface between the segmented parts.
Solution Approach 2:
The locking tabs are pre-formed on the clasp portion and the registerable features are pre-formed on the base portion. When the clasp is engaged with the base, the locking tabs automatically align with and engage the registerable features, providing preliminary locking action without requiring additional complex mechanisms or steps.
2Reliability
If a secure locking mechanism is implemented, then unauthorized access is prevented, but visual indication of tampering becomes difficult to detect
Solution Approach 1:
The patent incorporates visual indicators that change or reveal their state when tampering occurs. The registration features and locking tabs are designed to provide visual confirmation of proper engagement or tampering through color changes, visibility changes, or positional changes that are easily detectable by the user.
Solution Approach 2:
The locking tabs serve as an intermediary element between the clasp portion and base portion. These tabs provide both the mechanical locking function and the visual indication function, acting as a mediator that translates the secure engagement state into visible feedback for the user without requiring separate detection mechanisms.
3Reliability
If a two-part cover assembly with locking tabs is used, then tamper evidence is improved, but the device complexity increases
Solution Approach 1:
The locking and evidencing functions are merged into the basic engagement interface between the base and clasp portions. The same locking tabs that provide security also provide visual evidence of tampering, eliminating the need for separate mechanisms and reducing overall device complexity while maintaining high reliability.
Solution Approach 2:
The locking tabs and registerable features serve multiple functions simultaneously: they provide mechanical locking, visual indication of engagement status, and tamper evidence. This multi-functionality reduces the number of separate components needed, simplifying the overall assembly while improving tamper evidence capability.
Data Source
AI summary
A tamper resistant/evident cap cover for IV needle configurations to provide a single use engageable cap to prevent unauthorized access and use of an IV needle port. The cap cover has a threaded IV needle receiving base and a slidably disposed interengagement locking clasp. Oppositely disposed tamper evident latching tabs are receivably secured into the base by multiple clasp barbs defining a first position for access and a second closed locked position.