Child-Resistant Topical Dispenser With Push-and-Turn Dosing Lock
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Solution Overview
Problem
Existing topical dispensers for flowable compositions, such as creams and lotions, lack effective child-resistant mechanisms to prevent access by children while maintaining ease of use for adults, particularly for medications like opioids and corticosteroids.
Innovation Solution
A child-resistant closure system and rotatable base system are integrated into the dispenser, requiring specific actions like push-down-and-turn or push-in-and-turn to open the cap and rotate the base, respectively, ensuring secure access is restricted.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a child-resistant closure system with engagement mechanisms is implemented, then child safety is improved, but device complexity increases
Solution Approach 1:
The closure system is divided into separate functional components: the cap with applicator engagement mechanisms and the applicator with cap engagement mechanisms. This segmentation allows each component to have specialized child-resistant features while maintaining overall system functionality. The engagement mechanisms are distributed across multiple parts rather than concentrated in a single complex assembly.
Solution Approach 2:
The patent introduces an intermediary engagement mechanism system that requires specific actions (push-down-and-turn or push-in-and-turn) to activate. This intermediary mechanism serves as a mediator between the cap and applicator, ensuring that only intentional adult use can overcome the child-resistant lock while preventing accidental activation by children.
2Reliability
If a child-resistant rotatable base system with engagement mechanisms is implemented, then prevention of unauthorized dispensing is improved, but ease of operation deteriorates
Solution Approach 1:
The rotatable base system incorporates dynamic engagement mechanisms that can be activated through specific rotational actions. The outer base can rotate independently for easy access, but the inner base requires a coordinated push-in-and-turn action to engage the drive screw and enable controlled dispensing. This dynamic system adapts to different user actions, providing ease of operation for legitimate use while preventing unauthorized access.
Solution Approach 2:
The system requires preliminary actions (push-in-and-turn) before the main dispensing function can be activated. This preliminary action sequence ensures that children cannot accidentally dispense medication while allowing adults to easily operate the dispenser after the initial engagement step.
3Reliability
If multiple engagement mechanisms are integrated into the cap and applicator, then child-resistant protection is improved, but manufacturing complexity increases
Solution Approach 1:
The engagement mechanisms are segmented and distributed across the cap and applicator components rather than integrated into a single complex unit. This allows each component to be manufactured separately using standard molding techniques, then assembled together. The modular approach simplifies manufacturing while maintaining the child-resistant functionality.
Solution Approach 2:
The patent utilizes parameter changes in the engagement mechanisms, such as the deflectable top wall of the cap that transitions between deflected and undeflected states. This allows the same component to serve multiple functions: providing child-resistant protection when engaged and enabling easy operation when deflected. The parameter change approach reduces the need for multiple separate mechanisms.
Data Source
AI summary
A topical dosing dispenser including a child resistant closure system and/or a child resistant rotatable base system.