Glass Luer Tip Marking for Leak-Free Female Fitting Connections
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Solution Overview
Problem
Existing luer slip connections between glass injection devices and female fittings are prone to leaks and detachment due to dimensional tolerances and user variability, leading to inconsistent and unsafe connections.
Innovation Solution
A glass-made male luer tip with marking means indicating the correct positioning of a female fitting for a secure and leak-free connection, manufactured using standardized gages to determine the marking location, which can be visual or tactile indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If standardized dimensions are used for luer slip connection, then compatibility between different devices is improved, but connection reliability deteriorates due to high dimensional tolerances in glass luer tips
Solution Approach 1:
The patent applies local quality by providing marking means at a specific location on the luer tip (at the distal end of the tapered section) to indicate the correct positioning of the female fitting. This localized marking allows users to achieve reliable connections despite the high dimensional tolerances inherent in glass luer tips, while still maintaining standardized dimensions for overall compatibility.
2Reliability
If push-and-twist connection method is used, then connection security is improved, but ease of operation deteriorates due to user variability in performing the connection
Solution Approach 1:
The patent applies preliminary action by pre-positioning marking means on the luer tip during manufacturing to indicate the exact location where the proximal end of the female fitting should be positioned. This eliminates the need for users to rely on their own judgment and experience, making the connection process easier and more consistent while maintaining the security benefits of the push-and-twist method.
3Device complexity
If no marking means are provided, then device complexity is reduced, but measurement precision deteriorates as users cannot determine correct positioning of the female fitting
Solution Approach 1:
The patent applies color changes by using marking means that provide visual indicators (such as colored rings, printed marks, or etched patterns) on the luer tip. These markings create visible references that allow users to precisely determine the correct positioning of the female fitting, significantly improving positioning precision while adding minimal complexity to the overall device structure.
Data Source
AI summary
The present invention relates to a glass luer tip with marking means for completing a leak-free luer slip connection with a female fitting. The invention also relates to a method for manufacturing such a marked glass luer tip. The method further relates to the use of such a marked glass luer tip for completing a leak-free luer slip connection.