IV Fluid Port Closure System with Segmented Sterilization
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Solution Overview
Problem
Current IV fluid containers face challenges in maintaining sterility due to careless handling and the complexity of autoclave sterilization, particularly in emergency situations, and require improved handling and manufacturing efficiency.
Innovation Solution
A port closure system with administrative and additive port closure assemblies that include a cap assembly to seal and protect the ports, allowing for easy access while preventing contamination, and a polymer blend that ensures secure sealing and ease of use with different needle and pin diameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If autoclave sterilization is performed on assembled container and ports, then sterility is achieved, but time and energy consumption increase significantly
Solution Approach 1:
The system divides the container into separate sterilizable components (container body, port assemblies, caps) that can be sterilized independently before assembly. This allows the container body to be sterilized quickly without waiting for the entire assembled system, reducing overall sterilization time while maintaining sterility through proper sealing at interfaces.
Solution Approach 2:
The cap assemblies and port closures are designed to be pre-sterilized and sealed before final assembly with the container. This preliminary sterilization action eliminates the need for extended autoclaving of the complete assembly, as the critical sterile interfaces are already prepared in advance.
2Reliability
If autoclave sterilization temperature and duration are increased to reach difficult areas, then sterility of innermost parts is improved, but energy consumption increases
Solution Approach 1:
The design extracts and removes air voids from critical areas by using air-tight seals and eliminating gaps between components. This allows standard autoclave temperatures to effectively reach all surfaces without requiring excessive energy input to penetrate air pockets, as the sealed design ensures complete fluid contact for sterilization.
Solution Approach 2:
The cap assemblies utilize flexible sealing membranes and thin film structures that conform to mating surfaces, creating air-tight barriers. These flexible seals eliminate dead air spaces while maintaining sterility, allowing energy-efficient sterilization of all internal surfaces without requiring prolonged or high-temperature autoclaving.
3Reliability
If port closure assemblies are designed with multiple sealing components, then contamination protection is improved, but device complexity increases
Solution Approach 1:
The cap assembly integrates multiple functions into a single unified component: sealing the port interface, providing a sterile barrier, and enabling needle/pin insertion. This merging of sealing and access functions eliminates the need for separate complex multi-component systems while maintaining robust contamination protection through the integrated seal design.
Solution Approach 2:
The cap assembly is designed as a universal component that works with both additive ports (needles) and administrative ports (pins), providing consistent sealing and protection across different port types. This multi-functionality reduces overall system complexity by using a single design solution for multiple applications rather than requiring specialized components for each port type.
4Adaptability or versatility
If the sleeve has differing diameters in upper and lower portions, then adaptability to different needle and pin diameters is improved, but manufacturing precision requirements increase
Solution Approach 1:
The sleeve incorporates localized dimensional variations with the upper portion having a larger diameter for needle compatibility and the lower portion having a smaller diameter for pin compatibility. These local quality changes are implemented through simple molding features rather than complex machining operations, maintaining ease of manufacture while providing adaptability to different access device diameters.
Data Source
AI summary
A port closure system for use with a fluid container having fluid ports includes administrative and additive port closure assemblies. The administrative assembly receives a piercing pin and includes an administrative housing which seals closed one fluid port. A sleeve extends from an interior surface past a base surface in the administrative housing. The sleeve has an upper portion and a lower portion, of differing diameters. A cap assembly mates with the administrative housing, sealing the interior surface of the administrative housing. A removable cap provides access to the interior surface. The additive assembly receives a needle and includes a reseal housing which seals closed another fluid port. Another cap assembly mates with the reseal housing, sealing an interior face of the reseal housing. Another removable cap provides access to the interior face. A reseal element is mechanically retained between the reseal housing and cap assembly.