Medicament Delivery Support Structure Guide Element
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Solution Overview
Problem
Existing medicament delivery devices face issues with medicament containers having dimensions outside specifications, leading to a risk of jamming due to variations in radius measures, which can cause malfunction when arc-shaped support structures enter the passage between the container's inner surface and plunger rod.
Innovation Solution
An intermediate structure with a ring-shaped element and guide elements is introduced to guide flexible support structures outwardly, preventing jamming by ensuring they do not enter the medicament container's passage, and allowing the plunger rod to access the distal end for dose expulsion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If arc-shaped flexible support structures are used to prevent medicament container movement, then the medicament container is held securely and cannot rattle or move inside the housing, but when medicament containers have dimensions outside specification (large radiuses), the flexible support structures may enter into the passage between the container's inner surface and plunger rod, causing jamming and device malfunction
Solution Approach 1:
A guide element acts as an intermediary component between the flexible support structure and the medicament container. The guide element has a guide surface that directs the flexible support structure away from the passage between the container and plunger rod, preventing jamming while maintaining secure holding functionality
Solution Approach 2:
The support structure is divided into separate functional elements: the arc-shaped flexible support structure for holding the container, and a separate guide element for directing the support structure away from critical passages. This segmentation allows each element to perform its specific function without interfering with the other
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 solution effectively prevents jamming and ensures smooth operation by maintaining the flexible support structures away from the medicament container, allowing for reliable dose delivery without compromising the device's length or functionality.
Implementation Method 1
a flexible element arranged to exert a force on a distal end surface of the medicament container
Data Source
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AI summary
The present application relates to an intermediate structure (50; 60) for a support structure (40) of a medicament delivery device, which support structure is to cooperate with a medicament container (18), said support structure (40) comprising a flexible element (48) arranged to exert a force on a distal end surface of said medicament container (18), wherein said intermediate structure (50; 60) is arranged between said flexible element (48) and said end surface and arranged to guide said flexible element (48) in an outwardly direction in relation to a longitudinal axis (L) when exerting a force on said medicament container (18).