Syringe Tip Cap Assembly for Sterile VAD Disinfection
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Solution Overview
Problem
Conventional flush syringes for vascular access devices (VADs) are prone to contamination due to exposure of the luer tip, leading to cumbersome and time-consuming disinfection processes, which often result in non-compliance with aseptic techniques, increasing the risk of catheter-associated bloodstream infections.
Innovation Solution
An integrated disinfection device with a cup and cap assembly featuring flexible locking mechanisms, such as clips, tabs, and alignment teeth, that securely attach to form a sealed unit, providing mechanical and chemical disinfection without adhesives, ensuring sterility and simplifying the disinfection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate disinfection cap and syringe are used, then disinfection function is provided, but device complexity and number of steps increase
Solution Approach 1:
The patent combines the syringe and disinfection cap into a single integrated unit. The syringe barrel includes an integrated cap assembly with a peeler seal that covers the luer tip, eliminating the need for separate disinfection caps and reducing the number of components while maintaining disinfection functionality.
Solution Approach 2:
The integrated cap assembly serves multiple functions: it seals the luer tip during storage, provides disinfection capability through integrated swabs, and maintains sterility throughout the flushing process. This multi-functional design eliminates the need for multiple separate apparatuses.
2Reliability
If conventional separate disinfection process is used, then disinfection is provided, but time consumption increases
Solution Approach 1:
The disinfection swabs are pre-positioned within the integrated cap assembly during manufacturing. The peeler seal is pre-applied to cover the luer tip. These preliminary actions eliminate the need for multiple separate disinfection steps during clinical use, reducing time while maintaining compliance.
Solution Approach 2:
Multiple disinfection actions (sealing, swabbing, and protection) are merged into a single integrated unit that is applied once, eliminating the need for repeated separate disinfection steps and significantly reducing process time.
3Ease of operation
If luer tip is exposed to environment, then syringe can be used, but contamination risk increases
Solution Approach 1:
The peeler seal is a flexible thin film that covers and seals the luer tip during storage and transport. It can be easily peeled off when needed, providing continuous protection against contamination while not interfering with syringe usability.
Solution Approach 2:
The integrated cap assembly acts as an intermediary barrier between the luer tip and the environment. It provides continuous protection during storage and can be easily removed when the syringe needs to be used, eliminating contamination risk without compromising usability.
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 integrated disinfection device enhances compliance with aseptic techniques by reducing the number of steps and apparatuses, minimizing contamination risks, and ensuring sterility during VAD maintenance, thereby reducing the incidence of bloodstream infections.
Implementation Method 1
flexible locking mechanisms, such as clips, tabs, and alignment teeth, that securely attach to form a sealed unit
Data Source
AI summary
Syringe tip caps are described herein. Such syringe tip caps may include a cup, a cap, a locking feature, a peelable seal and an absorbent material. The cap having locking features and a chamber appropriately sized to adapt to and interlock with an annular wall of the cup.