Hinged Package Assembly for Safe Medicament Device Setup
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Solution Overview
Problem
Existing medicament delivery devices risk unintentional firing during shipping or transportation due to their pre-assembled design, necessitating robust solutions for safe assembly by users without formal medical training.
Innovation Solution
A package assembly comprising a first and second subassembly of a medicament delivery device, where the first subassembly is attached to a first pulling element with a gripper, and the second subassembly is attached to a support via a hinge, allowing for easy assembly by opening the package, which pivots and pulls the subassemblies together.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the medicament delivery device is pre-assembled to facilitate user operation, then ease of operation is improved, but the risk of unintentional firing during shipping increases
Solution Approach 1:
The medicament delivery device is divided into separate subassemblies (first subassembly and second subassembly) that are stored separately in the package. The first subassembly contains the medicament delivery mechanism while the second subassembly contains the power pack and firing mechanism. This segmentation prevents unintentional firing during shipping while still allowing easy assembly by the user through the hinge mechanism.
Solution Approach 2:
The package is pre-configured with the first and second subassemblies positioned in specific chambers with a hinge connection already established. The pulling element is pre-attached to the first subassembly, and the gripper is pre-positioned to engage with the second subassembly. When the user opens the package, the assembly action occurs automatically through the hinge movement, requiring minimal user effort.
2Reliability
If the medicament delivery device is kept as two separate subassemblies to prevent unintentional firing, then reliability is improved, but the complexity of assembly increases
Solution Approach 1:
The package structure merges the storage function with the assembly function. The hinge connection between the first and second shells not only maintains separate storage of subassemblies for safety but also automatically performs the assembly function when the package is opened. The pulling element and gripper mechanism are integrated into the package structure, combining multiple functions into a unified system.
Solution Approach 2:
The package assembly system performs the assembly operation automatically when the user opens the package. The hinge movement between shells self-generates the pulling action that brings the subassemblies together. The gripper automatically engages with the second subassembly during the opening motion, eliminating the need for complex manual assembly steps by the user.
3Reliability
If a cap is used to seal the medicament exit to prevent unintentional firing, then reliability is improved, but the ease of operation decreases due to additional removal steps
Solution Approach 1:
The sealing function and assembly function are merged into a single operation. The cap on the second subassembly serves as both a protective seal during storage and an integral part of the assembly mechanism. When the pulling element engages the gripper and moves the subassemblies together, the cap is automatically removed or positioned correctly, combining the sealing protection with the assembly action in one motion.
Data Source
AI summary
An assembly for a medicament delivery device is presented where the medicament delivery device is arranged within a package as a first subassembly extending along a longitudinal axis from a first end to a second end and a second subassembly, where the package has a first shell with a first body that extends along the longitudinal axis and defines a first chamber inside the first body that holds the first subassembly. A second shell having a second body extends along the longitudinal axis and defines a second chamber that holds the second subassembly, where the second shell is attached to the first shell by a first hinge. The first shell has a first pulling element extending along the longitudinal axis and is attached to the first subassembly and is attached to the first body by a second, where the first pulling element has a first gripper arranged at a second end of the first pulling element.