Dual-Interface Fluidic Conditioning Chamber for Anaerobic Membrane Analysis
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Solution Overview
Problem
Existing systems for investigating biological membranes face challenges in monitoring and sampling over long periods without constant anaerobic gas supply, requiring large anaerobic glove boxes to maintain controlled conditions and prevent sample degradation.
Innovation Solution
A system with a conditioning chamber that maintains a controlled anaerobic atmosphere, allowing for recirculation of liquid medium and placement of a flow cell outside the chamber, enabling easy access and reducing the need for continuous gas flushing, with integrated sensors for oxygen monitoring and pressure regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the system uses a constant anaerobic gas flow to maintain controlled conditions, then sample integrity is preserved, but operational complexity and equipment size increase
Solution Approach 1:
The system is divided into two distinct chambers: a conditioning chamber that maintains anaerobic conditions for liquid medium preparation, and a flow cell chamber that operates independently. This segmentation allows the anaerobic environment to be confined to only where needed (liquid medium storage), rather than requiring the entire system to be housed in a large anaerobic glove box, thus reducing overall equipment size while preserving sample integrity.
Solution Approach 2:
The flow cell is extracted from the anaerobic conditioning chamber and placed outside it. This allows the flow cell to be accessed and operated in ambient conditions while the liquid medium remains under controlled anaerobic conditions in the conditioning chamber. The extraction eliminates the need for the entire system to be enclosed in a large anaerobic environment, reducing equipment complexity.
2Reliability
If the system requires constant anaerobic gas supply to prevent sample degradation, then sample integrity is maintained, but operational simplicity decreases
Solution Approach 1:
The liquid medium is pre-conditioned in the anaerobic conditioning chamber before use, establishing the desired anaerobic environment in advance. This preliminary action ensures that when the medium is transferred to the flow cell, it already contains the appropriate gas composition, eliminating the need for continuous gas supply during operation and simplifying ongoing operations.
Solution Approach 2:
The recirculation system continuously circulates the liquid medium through the flow cell and back to the conditioning chamber, where it is re-conditioned with anaerobic gas. This self-service mechanism maintains sample integrity automatically without requiring constant manual intervention or complex gas supply systems, improving ease of operation.
3Reliability
If the flow cell is placed inside the anaerobic chamber, then sample integrity is maintained, but accessibility and ease of monitoring decrease
Solution Approach 1:
The system separates the flow cell from the anaerobic conditioning chamber, placing them in distinct locations. The conditioning chamber maintains anaerobic conditions for liquid medium preparation, while the flow cell operates independently in ambient conditions, providing easy accessibility for monitoring and sampling without compromising sample integrity through recirculation.
Solution Approach 2:
The liquid medium acts as an intermediary carrier, being conditioned in the anaerobic chamber and then transported to the flow cell via sealed tubing. This intermediary approach allows the flow cell to be accessible and operable in ambient conditions while the medium itself maintains the necessary anaerobic properties through continuous recirculation and re-conditioning.
4Reliability
If large anaerobic glove boxes are used to maintain controlled conditions, then sample integrity is preserved, but operational flexibility and accessibility decrease
Solution Approach 1:
The system segments the anaerobic environment to only the conditioning chamber where liquid medium is prepared and stored, rather than enclosing the entire system in a large anaerobic glove box. The flow cell operates independently outside the glove box, providing operational flexibility and accessibility while maintaining sample integrity through recirculation of pre-conditioned medium.
Solution Approach 2:
The system transitions from a spatial solution (large enclosed glove box) to a temporal/recirculation solution. Instead of maintaining anaerobic conditions throughout the entire system space, the medium is conditioned in time (pre-treated in the conditioning chamber) and then circulated, allowing the flow cell to be accessible and flexible in location while preserving sample integrity.
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
Enables long-term monitoring and sampling of biological membranes under controlled conditions without constant gas supply, reducing equipment size and operational costs, while maintaining sample integrity and allowing for precise control of oxygen levels.
Implementation Method 1
allowing for exchange of gasses with said controlled atmosphere
Implementation Method 2
The barrier is configured to (hermetically) seal an inside of the chamber from a surrounding environment
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A system (100) for investigating a membrane (T) comprises with a sealing chamber (10) containing a liquid container. The liquid container (11) is configured to hold a liquid medium (M1) in open communication with a controlled atmosphere (10a) inside the sealing chamber (10). A flow cell (30) is disposed outside the sealing chamber (10) and comprises flow channels (31,32) separated by the tissue. A set of liquid ducts (L13,L31) is connected to one of the flow channels (31) and configured to carry the liquid medium (M1) from the liquid container (11), through a barrier (10b,10t) of the sealing chamber (10) to an entrance of the flow channel (31) into the flow cell (30), and carry at least part of the liquid medium (M1') exiting the flow channel (31) from the flow cell (30) back into the liquid container (11).