Child-Resistant Blister Package One-Step Push Mechanism
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Solution Overview
Problem
Conventional child-resistant packaging is difficult for both children and adults, particularly the elderly or those with disabilities to open, and often requires complex multi-step processes, which can lead to accessibility issues.
Innovation Solution
A child-resistant blister package design featuring a one-step push-through mechanism with a protection layer, a blister layer containing cavities, and an access layer with a line of weakness, allowing unit doses to be removed easily by applying force to the top of the cavity, while maintaining stringent child-resistance standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional child-resistant packaging is used, then child-resistance is improved, but ease of operation deteriorates
Solution Approach 1:
The package is divided into three distinct layers (protection layer, blister layer, access layer) with different functions. The protection layer provides child-resistance, the blister layer contains the medication, and the access layer enables easy adult access through a tear line, resolving the contradiction between child-safety and adult-convenience
Solution Approach 2:
Different regions of the package have different mechanical properties tailored to their functions: the protection layer is designed to be difficult to penetrate (child-resistant), while the access layer contains a weakened tear line that is easy to activate (adult-friendly), allowing each region to optimize for its specific purpose
2Reliability
If multi-step opening process is used, then child-resistance is improved, but device complexity increases
Solution Approach 1:
The patent combines the child-protection function and the medication-access function into a single integrated package structure. The three layers work together in a unified system where the protection layer and access layer are permanently joined to the blister layer, eliminating the need for separate opening steps while maintaining child-resistance
Solution Approach 2:
The package is pre-configured with a tear line in the access layer and permanently joined layers during manufacturing. This preliminary preparation allows the package to provide child-resistance through its structure while enabling adults to access medication through a simple single-step tearing action, without requiring complex multi-step processes
Data Source
AI summary
A child-resistant blister package. The package has a top face, a bottom face, and a periphery. The package also has a protection layer with a top face, a bottom face and a periphery; a blister layer with one or more cavities; and an access layer with a top face, a bottom face, and a periphery. The bottom face of the access layer has a line of weakness that allows the unit dose to be removed from the cavity in one-step by applying a force to the top of the cavity and pressing the unit dose through the line of weakness. The bottom face of the protection layer and the top face of the access layer are permanently joined along substantially the entire periphery of the package. The blister package can also contain a tear resistant layer.