Robotic Fluid Transfer Station for Leak-Proof Septum Coupling
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Solution Overview
Problem
Existing robotic pharmaceutical preparation systems face challenges in securely transferring fluids between containers and fluid transfer assemblies, particularly in closed systems, due to the need for precise alignment and secure coupling of septa without relying on external fixing means like screws or snaps.
Innovation Solution
A robotic system with a manipulator and controller is used to securely align and maintain contact between container-septa and fluid transfer connector septa by applying a predetermined compression threshold force, ensuring leak-proof fluid transfer without external fixing elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If external fixing means like screws or snaps are used to couple septa, then the coupling strength is improved, but the device complexity increases
Solution Approach 1:
The patent removes external fixing means (screws, snaps, extensions) from the connector design, extracting the coupling function from separate components and integrating it into the septum itself through elastic deformation and contact pressure
Solution Approach 2:
The septum performs self-coupling through its elastic properties, where the deformation of the septum material itself provides the coupling force without requiring external fixing components
2Reliability
If a robotic manipulator applies compression force to secure septum contact, then the reliability of fluid transfer is improved, but the force control precision requirements increase
Solution Approach 1:
The patent utilizes elastic deformation as a parameter change mechanism, where the septum's material properties and deformation state provide a self-regulating coupling force that is less sensitive to precise force control requirements
Solution Approach 2:
The elastic deformation of the septum acts as a cushioning mechanism that absorbs variations in applied force, providing a buffer that maintains reliable contact even with variations in robotic force application
3Ease of operation
If septa are elastically deformed to maintain contact, then the ease of operation is improved, but the stress on the septum material increases
Solution Approach 1:
The patent exploits elastic deformation as a reversible parameter change that allows the septum to conform to contact surfaces and maintain sealing under operational stresses without permanent damage
Solution Approach 2:
The elastic properties of the septum material provide a cushioning effect that distributes stress over time and prevents stress concentration, allowing repeated deformation cycles without material failure
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 system effectively transfers fluids by elastically deforming septa to maintain secure contact, preventing leakage and enhancing the reliability of fluid transfer operations in robotic pharmaceutical preparation systems.
Implementation Method 1
The manipulator is configured to press at least one of the container-septum and the fluid transfer connector septum onto the other one of the container-septum and the fluid transfer connector septum to perform said securing of the contact therebetween
Data Source
AI summary
A robotic system and method are provided for transfer of fluid between a container accessible via a container-septum and a fluid transfer assembly accessible via a fluid transfer connector septum. The robotic system includes a controller and a manipulator controllable by the controller to manipulate at least one of the container and the fluid transfer assembly. The controller is configured to operate the manipulator to secure contact between the container-septum and the fluid transfer connector septum during at least a portion of the transfer of the fluid.