Needleless Syringe Connector Cap With Cross-Slit Aeration Valve
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Solution Overview
Problem
Existing container caps require needles for fluid withdrawal, which can be risky and inconvenient, especially when administering fluids orally or through feed tubes, and may lead to leakage and loss of valuable fluids during tilted or inverted use.
Innovation Solution
A needleless syringe connector cap with an elastically deformable plastic valve body featuring two cross-slit valves that adapt to different tapered syringe tips, sealing around them to prevent leakage and aerating the container to alleviate underpressure during fluid withdrawal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a needle is used to puncture a septum for fluid withdrawal, then fluid can be withdrawn effectively, but there is a risk of accidental sticking or injection and potential leakage
Solution Approach 1:
The invention extracts and eliminates the needle component from the fluid withdrawal system. Instead of using a needle to puncture a septum, the system uses a needleless syringe connector that interfaces directly with the container cap, removing the hazardous element while maintaining fluid withdrawal functionality
Solution Approach 2:
The invention introduces a needleless syringe connector cap as an intermediary component between the container and the syringe. This mediator enables safe fluid transfer by providing a controlled interface that eliminates the need for needle penetration while maintaining密封性和 fluid flow
2Ease of operation
If a thin membrane is used in the connector cap for needleless withdrawal, then needleless administration is enabled, but fluid leakage may occur during tilted or inverted use
Solution Approach 1:
The invention employs a dynamic membrane that can deform and adapt its shape based on orientation and pressure conditions. The membrane is designed to flex and conform to different positions, maintaining its sealing function whether the container is upright, tilted, or inverted by adjusting its configuration in response to gravitational and pressure forces
Solution Approach 2:
The invention uses a specially designed flexible membrane within the connector cap that maintains sealing through its elastic properties. The membrane is thin enough to allow needleless penetration by the syringe connector while being sufficiently flexible to conform to various orientations and maintain fluid containment without leakage
3Productivity
If fluid is withdrawn from a container, then the desired dose can be administered, but underpressure builds up in the container preventing further withdrawal
Solution Approach 1:
The invention introduces an aeration valve as an intermediary component that mediates between the sealed container interior and the external atmosphere. This valve selectively allows air to enter the container to equalize pressure during fluid withdrawal, enabling continuous dosing without compromising the hermetic seal when not in use
Solution Approach 2:
The aeration valve is designed to activate automatically in response to pressure differential. When underpressure develops during fluid withdrawal, the valve self-opens to allow air entry, and when pressure equalizes or reverses, it self-closes to maintain sealing, requiring no external control or intervention
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
Enables efficient and leak-free fluid withdrawal using needleless syringes, ensuring reliable sealing and aeration to facilitate fluid administration without the risks associated with needles, while maintaining container integrity even when tilted or inverted.
Implementation Method 1
an elastically deformable plastic valve body that is to be provided in or above said aperture at the top of the container
Implementation Method 2
the second cross-slit valve opens in response to an underpressure in said container resulting from said withdrawal, so as to aerate said container
Data Source
AI summary
A needleless syringe connector cap to be provided to a container having an aperture at its top, said cap comprising an elastically deformable plastic valve body. Said valve body comprises a first and second passage, each passage extending through the valve body. Both passages comprise a cross-slit valve in the extreme lower end of said passage, embodied as an aeration valve. The first passage is adapted to receive a first tapered syringe tip and the second passage is adapted to receive a second tapered syringe tip, wherein when fluid is withdrawn from a container to which the cap is provided through the first (second) passage using a first (second) tapered syringe tip to which said first (second) passage is adapted, the second (first) cross-slit valve opens in response to an under pressure in said container resulting from said withdrawal, so as to aerate said container.