Insulin Needle Self-Destruction Mechanism
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Solution Overview
Problem
Conventional insulin syringes pose a safety risk due to the exposure of the needle point during use and allow for potential reuse, leading to medical accidents.
Innovation Solution
A disposable safety self-destruction insulin needle design featuring a socket-type linkage structure with unevenly distributed spring plates and a self-destruction pressure seat that tilts and abuts against the safety sleeve, preventing reuse by ensuring the needle tube remains covered after use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the needle point is exposed during use for injection, then the ease of operation is improved, but the safety is worsened due to potential needle exposure and reuse
Solution Approach 1:
The safety sleeve is pre-positioned to cover the needle tube before use. After injection, the safety sleeve automatically returns to its initial position to cover and protect the needle point, preventing accidental exposure and reuse. This preliminary positioning and automatic return mechanism ensures safety without compromising ease of operation.
Solution Approach 2:
The spring mechanism provides self-service by automatically returning the safety sleeve to its protective position after injection without requiring manual intervention. The elastic force of the spring self-activates to cover the needle point, eliminating the need for user action to ensure safety.
2Productivity
If the insulin needle allows repeated utilization, then the productivity is improved, but the safety is worsened due to potential medical accidents from reuse
Solution Approach 1:
The clamping parts are asymmetrically distributed on the safety sleeve, creating an asymmetric clamping force on the self-destruction pressure seat. This asymmetry ensures that when the safety sleeve moves, the self-destruction pressure seat tilts to one side and becomes permanently jammed, preventing any possibility of reuse while maintaining structural simplicity.
Solution Approach 2:
The insulin needle is designed as a disposable single-use device. The self-destruction mechanism ensures the needle cannot be reused, aligning with the principle of using inexpensive single-use items to eliminate safety risks associated with reuse, while the simple structure keeps costs low.
3Reliability
If a safety mechanism is added to prevent needle exposure, then the safety is improved, but the device complexity increases
Solution Approach 1:
The safety mechanism is merged with the existing structure of the insulin needle. The safety sleeve integrates the protective function and the self-destruction function into a single component that moves along the needle tube. The spring mechanism is combined with the clamping parts to create a unified safety system, avoiding the need for separate complex safety devices.
Solution Approach 2:
The safety mechanism uses dynamic movement of the safety sleeve along the needle tube. During use, the sleeve moves to allow injection; after injection, the spring automatically returns the sleeve to cover the needle point. This dynamic operation provides safety without requiring complex static structures or additional control systems.
4Manufacturing precision
If the self-destruction pressure seat is clamped symmetrically, then the manufacturing precision is improved, but the reliability is worsened because the linkage assembly can be reset to prior-to-use state
Solution Approach 1:
The clamping parts are intentionally designed with asymmetric distribution on the safety sleeve. This asymmetry creates unequal clamping forces on different sections of the self-destruction pressure seat, ensuring that when the safety sleeve moves, the pressure seat tilts to one side and becomes permanently jammed between the spring plate and needle tube substrate, preventing any reset possibility.
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
The design effectively prevents needle exposure and reuse, enhancing safety by utilizing the asymmetrical distribution of spring plates to ensure the needle's self-destruction mechanism, thus eliminating the risk of medical accidents associated with reusable syringes.
Implementation Method 1
utilizing supporting force of the inner elastic parts
Implementation Method 2
the at least three spring plates exert unsymmetrical resistance on different sections of the annular lump, such that the self-destruction pressure seat is deflected and tilted
Data Source
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AI summary
The present invention discloses a disposable safety self-destruction insulin needle, it comprises an insulin needle body which is provided with a needle base therein and is provided on the center of the upper surface of the substrate of the needle tube thereof with a spring holding post, at least one flexible plate is provided on the inner wall of the upper side of the needle tube and extends diagonally in the inner wall of the inner chamber of the needle tube, a spring fits over the spring holding post and abuts downward against the upper surface of the substrate of the needle tube with one end thereof, and upward against a safety sleeve with the other end thereof, which the safety sleeve is provided on the lower end with a safety clamping base, a self-destruction pressure base fits over the spring and has an upper section located within the chamber of the safety sleeve. The invention uses a sleeve-connected linkage structure and realizes an instant reset of the safety sleeve by means of the spring located in the middle axis so as to ensure that the needle tube is not exposed and preferably realizes a tilting and deflection of the self-destruction pressure base by means of the a plurality of flexible plates unevenly distributed on the inner wall in the needle base so as to finally ensure that the insulin needle cannot be used a second time, in so doing the safety self-destruction operation of the insulin needle is realized.