Needleless Connector Separator With Elastic Valve Disengagement
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Solution Overview
Problem
Conventional infusion systems face issues with residual high-concentration medicinal liquid accumulating in the space between the second flow channel of the output part and the insertion hole, leading to adverse patient reactions and inefficiencies in medication administration.
Innovation Solution
A separator with a snap-on needleless connector module and a screw-coupling structure is designed to easily disengage, preventing leakage and allowing for sterilization and reuse. The module includes a movable closed connector and a needleless connector with elastic valves that ensure secure engagement and easy separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the separator is designed with a secure engagement mechanism to prevent leakage during patient movement, then the reliability is improved, but the ease of operation deteriorates due to difficulty in disengagement
Solution Approach 1:
The separator employs a dynamic engagement mechanism where the first elastic valve and second elastic valve automatically adjust their sealing states based on connection status. During engagement, the valves are compressed to seal; during disengagement, they return to open state, enabling easy separation without compromising leakage prevention during use
Solution Approach 2:
The separator is divided into separable components: the first connector with first elastic valve, the second connector with second elastic valve, and the conduit connecting them. This segmentation allows independent disengagement of each connector, improving ease of operation while maintaining reliable sealing when connected
2Reliability
If the connector uses strong sealing force to prevent medicinal liquid leakage, then the reliability is improved, but the ease of operation worsens due to increased engagement force required
Solution Approach 1:
The elastic valves are designed to change their physical state based on compression force. During engagement, they deform to create seal; during normal operation, they maintain optimal sealing force; during disengagement, they return to original state. This parameter change allows effective sealing without requiring excessive engagement force
Solution Approach 2:
The elastic valves provide dynamic sealing that adapts to engagement force. The elasticity allows the valve to seal effectively with moderate force while automatically releasing when disengagement force is applied, resolving the contradiction between strong sealing and easy operation
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 separator effectively prevents leakage of medicinal liquid and blood, even during patient movement, and allows for safe reuse after sterilization, ensuring consistent medication delivery and reducing waste.
Implementation Method 1
a first elastic valve and a second elastic valve are respectively provided in the first connector and the second connector
Data Source
AI summary
Provided is a separator easy to disengage, including: a valve body, a screw-coupling structure, an output end, and a snap-on needleless connector module. The snap-on needleless connector module includes a movable closed connector and a needleless connector. The movable closed connector includes a main body, a first coupling part and a first elastic valve. The main body includes a sleeve and a first engaging part. The first engaging part is a bump and is provided on the sleeve. The needleless connector includes a shell, a second coupling part and a second elastic valve. The shell or the second coupling part has a second engaging part, the second engaging part is a bump, and the force of the first engaging part fixed on the second engaging part is 1.4-8.1 Newton-meters, easy to disengage. Thus, the movable closed connector and the needleless connector will immediately disengage to prevent leakage and damages.