Medication Container Tamper-Evident Bead Design
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Solution Overview
Problem
Medication containers lack effective protection against manipulation and unauthorized access, particularly at the lower edge of the closure cap, which is a weak point in existing tamper-evident closure systems.
Innovation Solution
The container opening is designed with a thickened or widened 'lower' outer bead serving as a protective ring, with a bead width at least three times that of adjacent beads, to securely cover the lower edge of the closure cap and prevent unwanted access, combined with a snap-on cap and locking ring for enhanced security, and optionally an RFID chip for automated handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard closure cap is used without additional protective structures, then the device complexity is reduced and ease of manufacture is improved, but the protection against manipulation and unauthorized access is insufficient
Solution Approach 1:
The closure system is divided into functionally distinct elements: a standard closure cap for sealing, and additional protective outer beads arranged circumferentially at different heights. These segmented elements each perform specific protective functions, with the lower outer bead specifically addressing manipulation protection while the upper beads provide sealing and identification functions.
Solution Approach 2:
The protective outer beads are integrated into the closure system structure, with the lower outer bead positioned beneath the closure cap and upper outer beads positioned above it. This nested arrangement allows multiple protective functions to be incorporated without significantly increasing overall device complexity, as the beads are arranged concentrically around the closure cap axis.
2Reliability
If the lower edge of the closure cap is left exposed, then the ease of operation and access to contents is improved, but the protection against unauthorized access and tampering is compromised
Solution Approach 1:
The lower outer bead is designed with specific local qualities: it is positioned at the lower edge of the closure cap, has a specific radial position, and provides localized protection against manipulation from below. This localized protective structure does not interfere with the overall ease of access to contents while specifically addressing the tamper evidence requirement at the vulnerable lower edge area.
3Reliability
If outer beads are made with uniform width, then the manufacturing precision is improved and device complexity is reduced, but the protective function against manipulation from below is insufficient
Solution Approach 1:
The outer beads are designed with non-uniform widths where the lower outer bead has a specific width optimized for protection against manipulation from below, while upper outer beads may have different widths optimized for sealing and identification functions. This local quality differentiation ensures each bead performs its specific function effectively.
Solution Approach 2:
The bead width parameter is varied intentionally across different positions (lower vs. upper beads) to optimize protective functions. The lower outer bead has a width specifically designed to prevent manipulation from below, while other beads have widths optimized for their respective functions, demonstrating that parameter variation enhances rather than compromises manufacturing precision when designed purposefully.
Data Source
Figure 1~2
Figure 3a~3b
Figure 4a~4b
AI summary
A drug container (1) for a medicinal active ingredient or a drug, the interior (4) of which is accessible via a container opening (6) designed in the manner of a bottle mouth, is intended to offer particularly high-quality and reliable protection against tampering with its contents. According to the invention, for this purpose, a number, preferably three, of circumferential outer ridges (12, 16) are arranged on the outside of the container opening, wherein the lowest or proximal outer ridge (16) viewed in the direction of the opening (14) is designed as a limiting outer ridge (16) and has a ridge width (W) of at least 150% of the ridge width (w) of the adjacent outer ridge (12).