Integral Vial Adapter for Infusion Liquid Transfer
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Solution Overview
Problem
Existing liquid transfer devices for infusion liquid containers allow multiple additions of medicament additives, which increases complexity and cost, whereas a simplified system with limited single additions is desired for cost savings and ease of use.
Innovation Solution
A liquid transfer device with an integral vial adapter for snap fit mounting on a vial, eliminating the need for a separate NC needleless additive port and incorporating an integral infusion set to reduce costs and simplify use, while ensuring secure medicament addition and administration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a needleless additive control valve with self-sealing access valve is used to enable multiple additions of medicament additives, then the versatility and reliability of the infusion system is improved, but the device complexity and cost increase
Solution Approach 1:
The patent extracts the self-sealing access valve component from the overall connector body, making it a separate replaceable element. This allows the complex self-sealing mechanism to be used only when multiple additions are needed, while simpler connectors can be used for single-addition applications, thus reducing overall device complexity while maintaining versatility.
Solution Approach 2:
The connector system is segmented into separate functional components: the connector body, the self-sealing access valve, and the vial adapter. This segmentation allows each component to be optimized independently and enables flexible configuration based on whether single or multiple additions are required, balancing versatility with complexity management.
2Adaptability or versatility
If a needleless additive control valve with self-sealing access valve is used to enable multiple additions of medicament additives, then the versatility and reliability of the infusion system is improved, but the cost increases
Solution Approach 1:
The self-sealing access valve is designed as a disposable component that is replaced after a single use or when contamination is suspected. This approach reduces the cost of maintaining expensive reusable self-sealing mechanisms while still enabling multiple additions during the infusion process, as new valves can be attached to the connector body as needed.
Solution Approach 2:
The system allows for preliminary preparation of medicament in vials that can be quickly exchanged at the bedside. By pre-filling vials with medicament and designing quick-exchange mechanisms, the system enables multiple additions without requiring complex reusable valves, thereby reducing overall system cost while maintaining versatility.
3Device complexity
If an integral vial adapter with snap fit mounting is used for single addition, then the device complexity and cost are reduced, but the versatility for multiple additions is limited
Solution Approach 1:
The connector body is designed with universal features that can accommodate both simple vial adapters for single additions and self-sealing access valves for multiple additions. This multi-functional design allows the same base connector to support different addition modes, providing versatility without requiring completely different connector systems.
4Reliability
If a separate NC needleless additive port is used, then the reliability and control of medicament addition is improved, but the device complexity increases
Solution Approach 1:
The patent merges the additive port functionality directly into the connector body, eliminating the need for a separate NC needleless additive port. The connector body itself provides the interface for vial adapter attachment and medicament transfer, simplifying the overall device structure while maintaining reliable control over medicament addition through the standardized connector design.
Data Source
AI summary
Liquid transfer devices based on commonly owned WIPO International Publication No. WO 2007/052252 entitled Needleless Additive Control Valve. The liquid transfer devices include either an integral vial adapter and/or an integral infusion set for reducing cost and facilitating use by reducing user steps.