Transfer Device with Dual Lumens for Infusion Venting
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Solution Overview
Problem
Conventional transfer devices for infusion liquid containers often experience vapor lock, leading to incomplete medicine transfer, resulting in highly concentrated undiluted medicine being introduced into the infusion line or improper dosing, posing risks and concerns.
Innovation Solution
A transfer device with a three-way or four-way connector body, featuring a vial adapter with a vial spike for fluid communication, an IV spike for infusion liquid container insertion, and user-controlled venting or one-way valves to ensure complete and controlled fluid transfer, preventing airlock and liquid lock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional transfer devices are used for fluid transfer, then the device structure is simple, but vapor lock occurs leading to incomplete medicine transfer
Solution Approach 1:
The connector body is divided into multiple lumens (first lumen for fluid transfer, second lumen for venting) that are physically separated but functionally coordinated. This segmentation allows independent control of fluid flow and air venting pathways, preventing vapor lock while maintaining reliable complete transfer of medicine from the media container to the infusion container.
2Reliability
If conventional transfer devices are used, then the device is easy to operate, but highly concentrated undiluted medicine may be introduced into the infusion line
Solution Approach 1:
The second lumen acts as an intermediary venting pathway that allows air to escape from the media container during fluid transfer. This intermediary mechanism prevents vapor lock and ensures complete transfer of the medicine solution, guaranteeing accurate dosing without requiring complex user control or monitoring.
3Reliability
If conventional transfer devices are used, then the device structure is simple, but airlock or liquid lock may occur during transfer
Solution Approach 1:
The second lumen provides continuous air venting capability throughout the fluid transfer process, ensuring that air can continuously escape from the media container as fluid is transferred. This continuous venting action prevents airlock and liquid lock conditions, maintaining uninterrupted fluid flow from the media container through the first lumen to the infusion container.
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 device enables effective and complete transfer of medicine from medicament containers to infusion liquid containers, reducing the risk of undiluted or improperly diluted medicine reaching the infusion line, thereby ensuring safe and accurate dosing.
Implementation Method 1
the vial spike comprising at least one vial lumen; and an IV spike integral with the three-way connector body, having a first end for insertion into an infusion liquid container, a first IV lumen, and a second IV lumen adjacent the first IV lumen and in direct fluid communication with the at least one vial lumen
Implementation Method 2
the second lumen is configured for isolated, direct and continuous fluidic communication through the three-way connector body
Data Source
AI summary
Transfer devices with vial adapter and/or an infusion set for reducing overdosing/underdosing of an infusion bag are provided. The transfer device provides user-controlled fluid transferring between an infusion liquid container and a drug-containing container. In one aspect, the transfer device provides user-controlled venting that can be used during liquid transfer between the infusion liquid container and a drug-containing container.