Resilient Shield Remover Assembly for Misaligned Syringe Caps
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Solution Overview
Problem
Existing medicament delivery devices face challenges in reliably and easily removing delivery member shields, particularly for elderly or arthritic users, due to the difficulty in aligning the syringe with the stripper mechanism, which can lead to improper removal or damage.
Innovation Solution
A resiliently connected delivery member shield remover assembly with a housing and a shield remover that moves between the shield and container, using a bias threshold to detach the shield automatically or manually, accommodating misalignments and varying container sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid needle shield stripper mechanism is used to remove the delivery member shield, then the shield can be removed, but the mechanism requires precise lateral alignment between the syringe and stripper, making it difficult to operate for elderly or arthritic users
Solution Approach 1:
The shield remover is designed as a resilient, movable component that can dynamically adapt its position along the longitudinal axis of the container. The remover moves from an initial position to a final position, and can be biased by a spring mechanism, allowing it to accommodate variations in container size and alignment while maintaining reliable shield removal functionality
Solution Approach 2:
The shield remover assembly is designed to work with containers of varying sizes and alignment positions. The movable remover can interact with shields on different container types (insulin pens, syringes, auto-injectors) and accommodate longitudinal placement variations, making the mechanism universally applicable across multiple device configurations
2Device complexity
If the shield remover is fixed in position, then the structure is simple, but it cannot accommodate misalignments or varying container sizes
Solution Approach 1:
The shield remover transitions from a fixed structure to a movable, resilient component that can adjust its position dynamically. The remover is connected to the housing via a movable connection (such as a hinge or sliding mechanism) and can be biased by a spring, enabling it to adapt to different container sizes and alignment positions while maintaining structural integrity
Solution Approach 2:
The shield remover is nested within the housing structure, allowing it to move along the longitudinal axis while remaining contained within the device. The remover can be positioned in different locations (initial and final positions) within the housing, enabling adaptability without adding external complexity to the overall device structure
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
Facilitates easy and robust removal of delivery member shields, ensuring compatibility with various container sizes and alignments, reducing user effort and preventing damage to the removal mechanism.
Implementation Method 1
a delivery member shield remover having a free end and a fixed end and wherein said delivery member shield remover is resiliently connected to the housing
Implementation Method 2
forces the free end of the delivery member shield remover to move in a distal direction until the delivery member shield remover reaches a bias threshold
Data Source
AI summary
A delivery member shield remover assembly is presented that includes a housing which extends along a longitudinal axis L and which has a proximal and a distal end; and a delivery member shield remover having a free end and a fixed end and wherein said delivery member shield remover is resiliently connected to the housing, wherein the fixed end is connected to the housing and the free end of the delivery member shield remover is configured to be positioned in a gap defined between the medicament container and the delivery member shield such that a distal movement of the movable medicament container in relation to the housing, forces the free end of the delivery member shield remover to move in a distal direction until the delivery member shield remover reaches a bias threshold and forces the delivery member shield to detach from the movable medicament container.