Multi-Orientation Liquid-Collection Canister with Segmented Gas Pathways
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Solution Overview
Problem
Existing reduced pressure systems and liquid-collection canisters face challenges in efficiently collecting liquids from tissue sites while maintaining the application of reduced pressure, as they often fail to operate effectively in multiple orientations and can become clogged as they fill with liquid, disrupting the pressure delivery.
Innovation Solution
The design incorporates a liquid-collection canister with multiple gas-communication pathways and liquid-air separators that allow gaseous communication between the liquid collection chamber and the pathways, preventing liquid from entering the pathways and ensuring continued pressure delivery even as the canister fills, enabling operation in various orientations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single gas-communication pathway is used in existing canisters, then the structure is simple, but the canister becomes clogged as it fills with liquid, disrupting pressure delivery
Solution Approach 1:
The gas-communication pathway is segmented into multiple separate pathways (first gas-communication pathway and second gas-communication pathway) within the canister walls. This segmentation ensures that if one pathway becomes clogged with liquid, the other pathways remain open for gas communication, thereby maintaining pressure delivery continuity while managing the complexity through modular wall structures with integrated apertures and liquid-air separators.
Solution Approach 2:
Different portions of the canister walls are equipped with specific local features: first and second apertures with corresponding liquid-air separators are positioned at strategic locations to allow gaseous communication while preventing liquid entry. This local quality enhancement at critical points (apertures and separators) ensures reliable pressure delivery without requiring complete redesign of the entire canister structure.
2Reliability
If liquid-air separators are positioned at multiple apertures, then liquid is prevented from entering pathways, but the device complexity increases
Solution Approach 1:
The liquid-air separators are merged with the canister wall structure itself, where the separators are integrated into the wall material or positioned within recesses formed in the outer surfaces of the walls. This merging approach prevents liquid from entering the gas-communication pathways while minimizing additional construction complexity by combining multiple functions (structural support, gas communication, and liquid separation) into a unified canister design.
Solution Approach 2:
Liquid-air separators act as intermediary elements positioned at the apertures where the canister walls allow gaseous communication. These separators mediate between the liquid collection chamber and the gas-communication pathways, selectively allowing gas passage while blocking liquid entry. The intermediaries are strategically positioned at first and second apertures in different walls, providing effective liquid separation without requiring complex internal structures.
3Adaptability or versatility
If the canister operates in a single orientation, then the design is simple, but it fails to collect liquid efficiently in multiple orientations
Solution Approach 1:
The canister is designed with universal multi-functionality to operate efficiently in multiple orientations. Gas-communication pathways are configured in at least two different walls (first wall and second wall) with corresponding apertures and liquid-air separators. This multi-functional configuration allows the canister to maintain gas communication capability regardless of its orientation, as liquid will always settle away from at least one functional aperture-separator assembly, enabling versatile operation without requiring orientation-specific designs.
Solution Approach 2:
The gas-communication pathways are distributed across multiple dimensional planes within the canister structure. By positioning first and second apertures in different walls and configuring pathways in at least two different walls, the design transitions from a single-plane (one-dimensional) approach to a multi-plane (three-dimensional) configuration. This dimensional expansion ensures that liquid accumulation in any orientation will not block all gas communication pathways simultaneously, achieving multi-orientation operation capability.
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 configuration allows for efficient collection of large volumes of liquid while maintaining reduced pressure application, preventing liquid from entering the gas-communication pathways and ensuring continuous pressure delivery, even when the canister is nearly full, thus enhancing the effectiveness of reduced pressure treatment systems.
Implementation Method 1
A first liquid-air separator is positioned over the first aperture to substantially prevent liquid passing through the first aperture, and a second liquid-air separator is positioned over the second aperture to substantially prevent liquid passing through the second aperture
Data Source
AI summary
A liquid-collection canister includes a liquid collection chamber defined by at least one wall and a first and second gas-communication pathway formed within the at least one wall. A first aperture is positioned between the first gas-communication pathway and the liquid collection chamber to allow gaseous communication between the liquid collection chamber and the first gas-communication pathway. A second aperture is positioned between the second gas-communication pathway and the liquid collection chamber to allow gaseous communication between the liquid collection chamber and the second gas-communication pathway. A first and a second liquid-air separator are positioned over the first aperture and the second aperture, respectively, to substantially prevent liquid passing through the first and second apertures.