Injection Device Holder Segmentation for Pen Stability
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Solution Overview
Problem
Existing injection devices for hypodermic syringes and pen devices lack effective mechanisms to securely hold and stabilize pre-filled pen devices during injection, leading to potential misalignment and discomfort for users.
Innovation Solution
The injection device features a housing with a tubular element and a movable element that includes a holder with two parts: a first holding part for engaging and fixing the pen device and a second part for locking it in place, using mechanisms such as snap-lock, threaded, or conic locks to ensure correct positioning and stability during injection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple holder structure is used to hold the pen device, then the device complexity is reduced, but the pen device becomes unstable and may move during injection
Solution Approach 1:
The holder is divided into two distinct holding parts: a first holding part with a first means for engaging and fixing the pen device in correct position, and a second holding part with a second means for locking the pen device and preventing movement. This segmentation allows each part to perform a specific stabilization function, ensuring the pen device remains stable during injection without requiring an overly complex monolithic structure.
2Manufacturing precision
If a secure locking mechanism is added to prevent pen device movement, then the injection precision is improved, but the device complexity increases
Solution Approach 1:
The locking mechanism is segmented into two functional parts working together: the first holding part engages and fixes the pen device in the correct position for injection, while the second holding part locks the pen device to prevent any movement relative to the movable element. This segmentation achieves precise injection positioning without requiring a single overly complex locking system.
Data Source
AI summary
An injection device adapted for injecting a durable or pre-filled pen device along an injection direction defining an injection axis. The injection device is provided with a certain holder and locking mechanism for fixing and holding a pen device in a correct position for injection into human skin.