Dynamic Barrier Isolation Chamber Multi-Wall Containment
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Solution Overview
Problem
Conventional isolation chambers fail to maintain effective containment of hazardous and aseptic compounds due to leakage and contamination risks, posing risks to operators and compromising the integrity of aseptic environments.
Innovation Solution
A dynamic barrier isolation chamber with a multi-walled structure and elevated pressure fluid barrier system that uses a dynamic fluid barrier to prevent ingress of contaminants and egress of hazardous substances, maintaining aseptic integrity through controlled fluid pressure and filtration systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional isolation chambers are used to contain hazardous compounds, then operator protection is provided, but leakage and contamination risks occur due to mechanical failures and seal wear
Solution Approach 1:
The isolation chamber is divided into multiple separate containment walls (inner wall, intermediate wall, outer wall) creating distinct containment zones. This segmentation ensures that a breach in one wall does not compromise the entire containment system, as the other walls remain intact to prevent leakage and contamination.
Solution Approach 2:
The system maintains elevated pressure in the barrier space between containment walls as a preventive measure. This pressure cushion proactively compensates for potential seal wear and mechanical failures by ensuring that any breaches are immediately sealed by the pressure differential, preventing hazardous compound leakage before it can occur.
2Object-affected harmful factors
If reduced internal pressure is maintained to prevent cytotoxin escape, then operator safety is improved, but airborne pyrogens are drawn into the chamber through breaches
Solution Approach 1:
Instead of maintaining reduced pressure inside the isolation chamber to prevent cytotoxin escape, the system inverts the approach by maintaining elevated pressure in the barrier space between containment walls. This reversed pressure configuration prevents both cytotoxin escape and pyrogen ingress simultaneously, as the pressure differential flows from the barrier space outward through any breaches.
Solution Approach 2:
The barrier space with elevated pressure acts as an intermediary zone between the isolation chamber and ambient environment. This intermediate pressure buffer seals breaches proactively, preventing direct communication between the isolation chamber and ambient air, thereby blocking both cytotoxin escape and pyrogen contamination pathways.
3Device complexity
If conventional single-walled chambers are used, then device complexity is reduced, but containment integrity cannot be maintained during mechanical failures
Solution Approach 1:
The chamber structure is segmented into multiple walls (inner, intermediate, outer) with distinct containment zones. This segmentation transforms a single point of failure into multiple independent barriers, ensuring that containment integrity is maintained even when one wall experiences mechanical failure.
Solution Approach 2:
The containment structure uses a nested multi-walled configuration where the inner wall, intermediate wall, and outer wall are arranged concentrically. This nesting provides redundant containment layers, allowing the system to maintain integrity during mechanical failures while adding only moderate complexity to the overall structure.
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 ensures continuous aseptic isolation and containment by proactively sealing breaches and filtering fluids, preventing contamination and maintaining a clean environment, even in the event of mechanical failures, thus enhancing safety and reducing the risk of exposure to hazardous substances.
Implementation Method 1
A dynamic fluid barrier, which is at an elevated pressure with respect to the isolation space and ambient, is positioned between the first and second containers
Implementation Method 2
An intake filter is associated with the second intake duct for filtering fluid passing from the ambient into the barrier and isolation spaces. An exhaust filter is associated with the first exhaust duct for filtering fluid passing from the isolation space to the ambient
Implementation Method 3
A fluid pump is associated with one of the intake and exhaust ducts for moving fluid from the ambient through the isolation space and the barrier space and back to the ambient
Data Source
AI summary
The invention concerns an isolation chamber for isolating substances from the ambient while simultaneously maintaining aseptic conditions within the isolation chamber and protecting the operator from potent compounds. The isolation chamber comprises a first container surrounding and defining an isolation space of holding the substances and a second container surrounding the first container. Preferably, the pressure of the isolation space is lower than the pressure of the barrier space.