Medicament Cap Shield Remover With Slit Protrusions
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Solution Overview
Problem
Existing medicament delivery device needle shield removers are difficult to incorporate into the manufacturing process and require high force for assembly, affecting user experience and production efficiency.
Innovation Solution
A medicament delivery member shield remover with a tubular body, slit, and protruding elements, where the slit extends along the axial direction and the protrusions are arranged on opposite sides, allowing for easier assembly and reduced initial force required for cap removal, featuring a tapered portion to enhance grip only when partially removed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a traditional needle shield remover design is used, then the grip on the needle shield is sufficient, but the force required for assembly is high and manufacturing is difficult
Solution Approach 1:
The needle shield remover is divided into a tubular body and separate protruding elements. The protruding elements can be inserted through the tubular body and engage with the needle shield, allowing the grip force to be concentrated at specific engagement points rather than distributed throughout the entire structure. This segmentation enables sufficient grip strength while simplifying the manufacturing process as components can be produced separately and assembled more easily.
Solution Approach 2:
The invention introduces protruding elements that extend radially outward from the tubular body in a direction perpendicular to the axial length. This dimensional addition creates new engagement surfaces that contact the needle shield, providing enhanced grip without increasing the axial length or overall complexity of the assembly process.
2Reliability
If a tight grip on the needle shield is maintained throughout, then the needle shield is securely held, but excessive force is required during cap removal before actual use
Solution Approach 1:
The protruding elements are designed to be movable relative to the tubular body, allowing them to dynamically adjust their engagement with the needle shield. During normal handling, the elements maintain a relaxed position with minimal engagement, making cap removal easy. When the needle shield needs to be secured, the protruding elements can engage more firmly, providing reliable holding without requiring excessive force during routine cap removal.
Solution Approach 2:
The grip force is localized to specific regions where the protruding elements contact the needle shield, rather than being applied uniformly throughout the entire cap assembly. This localized engagement ensures secure holding of the needle shield at critical points while minimizing friction and resistance during normal cap removal operations.
Data Source
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AI summary
The invention concerns a cap for a medicament delivery device (80), the cap comprising a cap body (40, 60) and a medicament delivery member shield remover (10) arranged in the cap body (40, 60). The medicament delivery member shield remover (10) comprises a tubular body (12) extending along an axis (20) in an axial direction (22) from a proximal end (24) to a distal end (26) and extending in a circumferential direction (28) around the axis (20), a slit (14) in the tubular body (12) extending in the axial direction (22), and a first protruding element (16) extending from the tubular body (12) towards the axis (20), and a second protruding element. The second protruding element comprises two protrusions (18, 19) extending from the tubular body (12) away from the axis (20). The two protrusions (18, 19) are arranged on opposite sides of the slit (14) in the circumferential direction (28). The cap body (40, 60) comprises a tubular body (42) extending in the axial direction (22) from a proximal end (24) to a distal end (26), and a slit (48) in the tubular body (42) of the cap body (40, 60), the slit (48) extending in the axial direction (22), wherein the slit (48) comprises a tapered portion (50) that tapers towards the distal end of the tubular body of the cap body. The medicament delivery member shield remover (10) is moveable in the axial direction (22) relative to the cap body (40, 60). The two protrusions (18, 19) of the medicament delivery member shield remover (10) are arranged in the slit (48) of the cap body (40, 60). A medicament delivery device comprising a cap as described above is also described, along with embodiments of the medicament delivery member shield remover and the cap.