Medicament Container Holder With Flexible Tongues for RNS Stability
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Solution Overview
Problem
Medicament containers with rigid needle shields (RNS) face issues of loose fit and rattling due to varying tolerances, leading to instability in existing holders, especially when accommodated from the distal end.
Innovation Solution
A medicament container holder with proximally directed tongues that deflect radially outward upon engaging the RNS, ensuring a stressed state for secure engagement with the neck portion, combined with a distal flange support, providing a robust and stable fit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the diameter of the medicament container holder is made larger to accommodate the RNS, then the RNS can be properly received, but too much play occurs between the syringe and the holder in the radial direction, causing rattling
Solution Approach 1:
The proximal part of the medicament container holder is designed to be flexible in the radial direction, allowing it to dynamically adapt during insertion. The holder flexes outward when the RNS passes through and then returns to its original shape, creating engagement ledges that stabilize the syringe in the radial direction and prevent rattling.
2Stability of the object's composition
If inwardly directed ledges are arranged at the proximal end of the medicament container holder to hold the syringe, then the syringe can be secured, but the RNS blocks the path when inserted from the distal direction
Solution Approach 1:
The proximal part of the holder is designed with dynamic flexibility, allowing it to deform radially outward during insertion to accommodate the RNS, then return to its original shape to form engagement ledges that secure the syringe neck portion after insertion is complete.
Solution Approach 2:
The holder is designed in advance with a flexible proximal part that automatically performs the action of creating engagement ledges through its elastic recovery after being deformed during insertion, eliminating the need for separate mechanical components.
3Stability of the object's composition
If resilient sections with shoulder portions are used to engage the RNS and prevent syringe movement, then the syringe can be held in place, but tolerance variations cause loose fit and rattling when the sections return to their non-deflected state
Solution Approach 1:
The holder utilizes changes in the physical state of the proximal part between flexed and recovered states. By controlling the elastic deformation and recovery of the proximal part, the holder ensures reliable engagement with the syringe neck portion while maintaining stability despite manufacturing tolerances.
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
Ensures secure and stable positioning of medicament containers with RNS, preventing rattling and ensuring proper engagement despite tolerance variations, enhancing delivery precision.
Implementation Method 1
proximally directed tongues (38) arranged at the proximal end of the body (12), the tongues (38) being flexible in a generally radial direction
Data Source
AI summary
The present invention relates to a medicament container holder (10) comprising a body (12) adapted to receive a medicament container (14), the body (12) comprising proximally directed tongues (38) at its proximal end, engagement elements (42) arranged at the proximal end of the tongues (38), directed inwards, which engagement elements (42) are arranged to engage a neck portion (46) of the medicament container (14); wherein the tongues (38) deflect radially outwards when engaged by a needle shield (16) of said medicament container (14). The invention is characterized in that said tongues (38) with said engagement elements (42), engage with said neck portion (46) of said medicament container (14) for preventing the medicament container (14) from moving in a proximal direction relative the medicament container holder (10), when disengaged with said needle shield, wherein said tongues (38) are in a stressed state when in engagement with said neck portion (46).