Syringe Safe Disposal Locking Protrusion
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Solution Overview
Problem
Existing syringe designs with needle safety protectors often obstruct during injection and are cumbersome to dispose of safely, as the foldable housing or cover shakes and requires manual folding against a surface, making it difficult to prevent reuse and ensure safe disposal.
Innovation Solution
A syringe design with a locking protrusion on the needle safety protector and 'V'-shaped bending grooves on the cover allows for stable injection without obstruction and easy, one-handed disposal by folding the cover against a surface, ensuring the needle is securely locked and bent for non-reusability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a foldable needle housing is connected to the needle hub by a hinge, then the used injection needle can be disposed of safely, but the needle housing shakes and becomes an obstructive factor during injection
Solution Approach 1:
The cover is designed to be movable between an unfolded state during injection and a folded state for disposal. A locking protrusion on the needle safety protector engages with a locking groove on the cover to maintain stability during injection, while allowing the cover to be folded for safe disposal after use.
2Ease of operation
If the needle housing is formed in a linear shape, then it can be folded for disposal, but it is difficult to press against a wall surface and requires two-handed operation
Solution Approach 1:
The cover is designed with a curved shape that allows it to be folded along a bending line when pressed against a surface. This curved geometry enables the cover to conform to surface contours, allowing one-handed operation by simply pressing the cover against a wall or desk surface to achieve folding for disposal.
3Stability of the object's composition
If the cover is pushed rearward to lock, then the syringe maintains stable locked state, but the structure becomes more complex
Solution Approach 1:
The locking mechanism operates automatically through user interaction. When the cover is pushed rearward, the locking protrusion automatically engages with the locking groove, locking the cover in place without requiring additional components or complex mechanisms. The structure uses simple geometric features rather than complex mechanical systems.
Data Source
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AI summary
A syringe with a safe disposal structure and a function improvement structure is proposed. In the syringe, a locking protrusion protrudes on a needle safety protector main body, and a cover has a locking protrusion insertion groove, so that the cover is tightly locked alongside a barrel of a syringe assembly as the cover is pushed rearward while the locking protrusion and the locking protrusion insertion groove are engaged together. Accordingly, the injection is performed in a stable state without the obstruction of the shaking cover, and after the injection is completed, the syringe assembly is held by one hand and the cover of the needle safety protector is pressed against a surface such as a wall surface or a floor surface, so that the cover is bent around "V"-shaped bending grooves of the cover and the injection needle held in the cover is also bent, thereby preventing the reuse of the syringe.