Medicament Delivery Housing Blank Folded Assembly
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Solution Overview
Problem
The complexity and cost of producing disposable medicament delivery devices are increased due to the need for multiple parts in their assembly, which raises production time and costs, and the risk of the housing falling apart when dropped.
Innovation Solution
A housing blank and activation member blank are designed with fold lines that allow them to be molded and assembled into a single, locked unit, reducing the number of parts and simplifying production, while ensuring the device remains intact even if dropped.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If multiple parts are used for assembling the housing and activation member, then the device can be manufactured using standard injection moulding processes, but the production time and cost increase
Solution Approach 1:
The patent combines multiple housing parts into a single integrated housing blank and multiple activation member parts into a single activation member blank. Each blank is designed with fold lines that allow the different functional sections to be folded and assembled into the final multi-part structure from a single molded piece, thereby reducing assembly time while maintaining manufacturing feasibility
Solution Approach 2:
The housing blank and activation member blank are designed with integrated segmentation features including fold lines and break lines. These pre-defined segmentation elements allow the single-piece blanks to be easily divided into multiple functional parts during assembly, combining the benefits of single-piece molding with multi-part functionality
2Adaptability or versatility
If multiple parts are used for assembling the housing and activation member, then each part can be optimized for its specific function, but the number of moulds required increases production cost
Solution Approach 1:
The patent merges multiple functionally optimized parts into single integrated blanks. The housing blank integrates sections for different functions (medicament container reception, activation member reception, needle shield accommodation) while the activation member blank integrates the plunger, needle shield, and actuation components, reducing the total number of parts and moulds needed
Solution Approach 2:
The integrated blanks incorporate pre-defined segmentation features (fold lines, break lines) that allow the single piece to be divided into multiple functionally optimized sections during assembly, maintaining the ability to optimize each section for its specific function while reducing overall part count
3Ease of operation
If the housing is assembled from multiple parts, then assembly flexibility is maintained, but the housing may fall apart when dropped
Solution Approach 1:
The patent incorporates pre-defined fold lines and break lines during the molding process that enable easy assembly and disassembly. These pre-prepared features allow the housing to be taken apart and reassembled during manufacturing or servicing while maintaining structural integrity during normal use, as the fold lines are designed to flex during assembly but provide rigid connections during operation
Data Source
AI summary
A housing blank and an activation member blank for a medicament delivery device are disclosed, with a kit including a housing blank and an activation member blank, and a medicament delivery device assembled from the kit. The housing blank includes a mid portion having a through-opening for receiving a proximal end portion of a medicament container assembly, and first and second legs foldable relative to the proximal end portion. The activation member blank includes a central portion and a first and second arm foldable relative to the proximal end portion.