Automated Fluid Transfer Device Pressure Balancing
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Solution Overview
Problem
Automated fluid transfer systems face challenges in accurately transferring medications between medicinal containers like syringes and IV bags due to pressure imbalances and fluid locking issues, which can lead to incorrect dosages and inefficiencies.
Innovation Solution
The system employs a method to balance pressure within medical containers with ambient pressure using a fluid transfer device, incorporates a robotic gripper with tapered contact surfaces for secure handling, and utilizes UV sanitization and ionized air to mitigate static charge and contamination, along with a fast pull technique to remove air from containers, ensuring precise fluid transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If pressure balancing operations are performed repeatedly to equalize container pressure with ambient pressure, then fluid transfer accuracy is improved, but the time required for fluid transfer operations increases
Solution Approach 1:
The system performs pressure balancing operations before the fluid transfer operation to pre-equalize the pressure between the container and ambient environment. This preliminary action prevents pressure differential from interfering with the subsequent fluid transfer, ensuring accuracy without requiring time-consuming pressure adjustments during the transfer itself.
Solution Approach 2:
The fluid transfer device is designed to automatically perform pressure balancing through its own structure - by inserting the needle into the container, the system creates a pressure equalization pathway that allows pressure to self-regulate without requiring separate external balancing operations.
2Productivity
If automated fluid transfer systems are implemented to improve efficiency, then productivity increases, but fluid locking issues and pressure imbalances cause transfer accuracy to deteriorate
Solution Approach 1:
The system incorporates pressure sensing capabilities that monitor the pressure differential between the container and ambient environment. Based on this feedback, the control system automatically adjusts the fluid transfer device's operations - such as modulating pump speed or adjusting needle insertion depth - to compensate for pressure imbalances and prevent fluid locking, thereby maintaining transfer accuracy while preserving automated efficiency.
Solution Approach 2:
The fluid transfer device employs dynamic pressure equalization mechanisms that adapt in real-time to changing pressure conditions. The system can dynamically adjust flow rates, activation sequences, and mechanical parameters during the transfer operation to maintain optimal performance despite pressure variations, preventing fluid locking while sustaining high productivity.
3Productivity
If rapid fluid transfer operations are performed to reduce processing time, then productivity improves, but pressure imbalances cause fluid locking and dosing accuracy to worsen
Solution Approach 1:
The system performs rapid pressure equalization before initiating high-speed fluid transfer. By pre-balancing the pressure differential through quick activation sequences or pressure equalization valves, the system creates optimal conditions for rapid transfer without risking fluid locking or dosage inaccuracy, enabling both speed and precision.
Solution Approach 2:
The system replaces purely mechanical rapid transfer mechanisms with a hybrid approach that incorporates electronic pressure sensing and control. This substitution allows the system to maintain high transfer speeds while using electronic feedback to dynamically adjust for pressure imbalances, preventing fluid locking and ensuring accurate dosing despite the rapid 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
This approach enhances the accuracy and efficiency of fluid transfers by preventing fluid locking, ensuring precise dosages, and reducing waste, while maintaining a clean and controlled environment for medicinal fluid handling.
Implementation Method 1
balancing the pressure within the medical container with a pressure within the fluid transfer device that is substantially at ambient pressure
Implementation Method 2
UV sanitization and ionized air to mitigate static charge and contamination
Implementation Method 3
ionized air to mitigate static charge and contamination
Data Source
AI summary
Automated system and techniques for controlling fluid transfers among medical containers such as syringes, vials and IV bag are disclosed. In one aspect, an automated method for substantially balancing a pressure within a medical container such as a vial with ambient pressure using a fluid transfer device such as a needled syringe is disclosed. In another aspect, an automated method for substantially removing a volume of air from a medical container such as an IV bag using a fast pull technique is disclosed.