Auto Disposable Syringe with Protective Funnel and Spring Mechanism
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Solution Overview
Problem
Current syringes lack protection mechanisms, posing a risk of blood-borne disease transmission to healthcare staff and patients, leading to accidental infections and increased stress and economic burdens.
Innovation Solution
A high-security syringe design featuring a cylinder with a piston, a needle mechanism comprising a spring and membrane, and a protective funnel that prevents accidental needle exposure, ensuring leakproofness and secure handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional syringes without protection mechanisms are used, then the device complexity is low and ease of operation is high, but the reliability is poor and harmful factors increase due to accidental needle exposure and blood-borne disease transmission risk
Solution Approach 1:
The needle mechanism is nested inside the cylinder body, with the needle housed within a protective chamber. The protective funnel is integrated into the cylinder structure, creating a nested configuration where the needle mechanism (3) is contained within the cylinder (1), and the protective funnel (13) surrounds the needle tip area. This nesting approach provides protection without requiring entirely separate external components.
Solution Approach 2:
The syringe is designed with pre-activated safety features where the needle is automatically covered by the protective funnel after use. The spring mechanism is pre-loaded to automatically推进 the needle into the protective chamber when the plunger is pushed, eliminating the need for manual activation of safety features by the user.
2Object-affected harmful factors
If a protective mechanism is added to the syringe, then the reliability improves and harmful factors are reduced, but the device complexity increases
Solution Approach 1:
The needle is extracted from the traditional exposed configuration and placed inside a dedicated protective chamber within the cylinder. The needle mechanism (3) including the needle (31), spring (32), and membrane (33) is completely separated from the external environment during storage and transport, and only becomes accessible when the protective funnel is activated during the injection process.
Solution Approach 2:
The protective funnel (13) acts as an intermediary barrier between the needle and the external environment. It includes a hood designed to adapt to any Luer hub and a protector where the needle body is pressure-locked, serving as a mediating structure that allows the needle to function when needed while providing protection when not in use.
3Reliability
If a secure needle mechanism with spring and membrane is implemented, then the reliability and protection against accidental injection improve, but the ease of operation decreases due to the activation mechanism
Solution Approach 1:
The spring mechanism (32) is designed to automatically推进 the needle (31) through the membrane (33) when the plunger is pushed, without requiring any additional manual activation steps. The system serves itself by using the injection force to trigger the needle deployment, eliminating the need for the user to manually activate safety features or perform complex operations.
Solution Approach 2:
The spring (32) is pre-compressed and stored in the needle mechanism (3) ready to propel the needle forward. The membrane (33) is pre-positioned to cover the needle tip, and all components are pre-assembled in the correct configuration, so that the only action required from the user is to push the plunger, which then automatically triggers the injection sequence.
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 syringe provides a safe injection system that minimizes the risk of accidental infections, reduces stress for healthcare staff, and reduces economic and legal burdens by preventing needle exposure and ensuring secure handling and disposal.
Implementation Method 1
The spring, the function of which is to be compressed and bear the load of the needle with the membrane, releasing its energy once the mechanism is activated.
Implementation Method 2
One of its key points is its sharp crown, which allows breaking the membrane to activate the mechanism at will.
Data Source
AI summary
The present invention relates to a security syringe comprising a hollow cylinder (1) with a pair of wings (11) and a tip (12), which houses: the injection mechanism (3), a piston (2), and an injection mechanism (3) with a needle (31), a spring (32) and a membrane (33). The piston (2) has a serrated crown in the lower part (21) thereof where a chamber seal exists (22) and breaks only with the interior point of the needle (31), having the ends of the piston (2) of an inferior disk (24) and a superior disk (25) that steadies the piston (2) inside the cylinder (1). Around the cylinder (1) there is a protective funnel (13) against accidental injections. The piston comprises a cap (26) which guarantees the hermeticity of the empty chamber.