Injection Device Guide for Skin Positioning
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Solution Overview
Problem
Users face difficulties in positioning and stabilizing auto-injectors correctly against the skin, which can lead to unreliable operation due to the complexity of engaging and maintaining the sliding sleeve at the correct angle.
Innovation Solution
A guide with a first end to engage the injection device housing and a second end to engage the user's skin, ensuring correct angular movement and stability, featuring a cylindrical shape, flared end for stability, and optional ratchet mechanism for controlled incremental movement, and resilient elements for skin pinching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sliding sleeve locking mechanism is used to prevent premature activation, then safety is improved, but the complexity of positioning and stabilizing the device against skin increases
Solution Approach 1:
A guide structure is introduced as an intermediary component between the injection device and the skin surface. The guide includes a stabilizing element that contacts the skin and a guide body that directs the injection device, mediating the interaction to ensure correct positioning without requiring the user to directly manipulate the sliding sleeve at difficult angles
2Ease of operation
If the sliding sleeve must be forced against tissue at the correct angle, then the locking mechanism can be disengaged, but maintaining stability during activation becomes difficult
Solution Approach 1:
The guide is positioned and stabilized on the skin surface before the injection device is activated. The stabilizing element is first engaged with the skin, establishing a stable base, and then the injection device is advanced through the guide, ensuring correct positioning is achieved before the sliding sleeve needs to be disengaged
3Measurement precision
If the guide structure is added to ensure correct positioning, then positioning accuracy is improved, but the device complexity increases
Solution Approach 1:
The guide is segmented into distinct functional components: a stabilizing element for skin contact and positioning, and a guide body for directing the injection device. This segmentation allows each component to perform its specific function efficiently while keeping the overall structure relatively simple and manageable
Data Source
AI summary
There is provided a guide 200 for contacting an injection device 110 with a user; the guide 200 having a first end 210 adapted to engage a housing 112 of the injection device 110 and a second end 220 adapted to engage the surface of a user's skin, wherein the guide 200 permits movement of the housing 112 towards the user's skin.