Antiseptic Applicator With Protective Device
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Solution Overview
Problem
Conventional antiseptic applicators risk user injury from shards of glass or glass particles penetrating the applicator member due to over-squeezing, which can cause extreme fracturing of the frangible ampoule.
Innovation Solution
An antiseptic applicator assembly with an integral protective device and a closed, liquid-filled ampoule, where the ampoule is enclosed in a pocket within the body and an applicator member is secured to allow fluid flow through the protective device and applicator member upon ampoule fracture, using breaking tappets and a retaining tappet to localize fracturing forces and prevent ampoule movement, and through-holes in the protective device to allow fluid passage while blocking shards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the user applies excessive squeezing force to activate the ampoule, then the ampoule fractures and releases the antimicrobial solution, but glass shards may penetrate through the applicator member and injure the user
Solution Approach 1:
A protective device is introduced as an intermediary component positioned between the ampoule and the applicator member. This protective device has a protective surface that blocks glass shards from reaching the applicator member while allowing the antimicrobial solution to pass through, thus mediating the interaction between the fracturing ampoule and the user-safe applicator member
Solution Approach 2:
The protective device is divided into multiple functional zones: a protective surface for blocking glass shards, through-holes or porous regions for fluid passage, and structural support elements. This segmentation allows different portions of the protective device to perform different functions simultaneously - blocking shards while permitting solution flow
2Productivity
If the applicator member is placed directly over the ampoule to ensure fluid contact, then efficient fluid distribution is achieved, but glass shards can directly reach the applicator member
Solution Approach 1:
The protective device serves as an intermediary layer between the ampoule and applicator member, positioned such that it does not significantly impede fluid flow from the ampoule to the applicator member while simultaneously blocking glass shards. The through-holes or porous structure of the protective device maintains fluid passage pathways
Solution Approach 2:
The protective device exhibits local quality variations with regions of different porosity or hole sizes. Areas closer to the ampoule may have larger openings to facilitate fluid release, while areas closer to the applicator member have smaller openings or denser structures to block glass shards, creating a gradient of protective quality
3Ease of operation
If the ampoule is made more fragile to ensure easy activation, then the ampoule fractures more readily, but the risk of extreme fracturing and shard projection increases
Solution Approach 1:
The protective device is pre-positioned and secured to the applicator member before the ampoule is activated. This beforehand protective measure ensures that when the ampoule fractures - regardless of the degree of fracturing - glass shards are immediately blocked by the protective surface, cushioning the system against the hazard of shard projection
Solution Approach 2:
The protective device converts the potentially harmful effect of extreme ampoule fracturing into a beneficial outcome by capturing and containing glass shards. The protective surface that would otherwise be exposed to shard impact is instead used to trap and contain the shards, preventing them from reaching the applicator member or user
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 reduces the risk of user injury by ensuring controlled ampoule fracture and fluid distribution, preventing glass shards from reaching the applicator member, while enhancing manufacturing efficiency and cost-effectiveness through integrated components.
Implementation Method 1
through-holes in the protective device to allow fluid passage while blocking shards
Implementation Method 2
breaking tappets and a retaining tappet to localize fracturing forces and prevent ampoule movement
Data Source
AI summary
An applicator assembly includes a body defining a pocket, a closed ampoule received in the pocket, an integrated protective device attached to the body and enclosing the pocket, a lever projecting from the body, at least one tappet that bears against an external surface of the pocket and fractures the ampoule when the lever is pivoted, and an application member secured to the body, wherein an interior of the pocket is placed in fluid communication with the application member by way of through-holes provided in the integrated protective device. A method for manufacturing the applicator assembly includes rotating the protective device from an open position into a closed position to enclose the ampoule in the pocket before the application member is attached to the body so that the fluid to be dispensed will flow through the protective device and contact the application member when the ampoule is fractured.