Low-Profile Fluid Conduit for Leak-Resistant Wound Pressure Therapy
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Solution Overview
Problem
Existing wound therapy systems face challenges in efficiently managing fluid from tissue sites, including leaks and blockages, which disrupt treatment and cause patient discomfort, while also requiring frequent maintenance and alignment issues.
Innovation Solution
A therapy system comprising a tissue interface with integrated fluid pathways and sensors to monitor and maintain negative pressure, combined with a cover layer for sealing and a bridge structure for fluid management, which includes lumens and apertures to facilitate efficient fluid flow and pressure control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional fluid management systems are used in wound therapy, then fluid can be removed from tissue sites, but leaks and blockages occur disrupting treatment
Solution Approach 1:
The fluid conduit is divided into multiple segments including a foam layer with interconnected fluid pathways, a bridge component with lumens, and a cover layer. This segmentation allows each layer to perform specific functions (absorption, transport, sealing) independently, reducing the risk of complete system failure from leaks or blockages.
Solution Approach 2:
The conduit incorporates a foam layer and cover layer that can flex and conform to tissue contours while maintaining fluid pathway integrity. The flexible structure adapts to movement and deformation without creating blockages or leaks.
2Reliability
If complex fluid management components are used to prevent leaks and blockages, then treatment reliability improves, but device complexity increases
Solution Approach 1:
Multiple fluid management functions are merged into a single integrated conduit structure that combines the foam layer with embedded pathways, the bridge component with lumens and apertures, and the cover layer. This consolidation achieves reliable fluid management without requiring multiple separate components.
Solution Approach 2:
The conduit is designed as a multi-functional component that simultaneously performs fluid absorption, fluid transport, pressure distribution, and sealing functions. The foam layer absorbs and distributes fluid while maintaining structural integrity, the bridge transports fluid through lumens, and the cover seals the system.
3Ease of manufacture
If traditional conduits are used for fluid removal, then fluid management is achieved, but alignment issues require frequent maintenance
Solution Approach 1:
The conduit integrates multiple components (foam layer, bridge, cover) into a single assembled unit with pre-formed fluid pathways and alignment features. This integration eliminates the need for field assembly and alignment adjustments, reducing maintenance requirements.
4Productivity
If the conduit is made thicker to accommodate multiple fluid pathways, then fluid management capability improves, but profile height increases
Solution Approach 1:
The foam layer contains interconnected fluid pathways that extend in multiple dimensions within the foam matrix, allowing efficient fluid distribution without increasing overall conduit thickness. The pathways utilize the three-dimensional structure of the foam to achieve comprehensive fluid management.
Solution Approach 2:
The conduit structure varies locally with the foam layer providing absorption and distribution functions in specific regions, while the bridge component provides targeted fluid transport through lumens. This localized optimization achieves efficient fluid management without uniformly increasing conduit thickness throughout.
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 manages fluid from tissue sites, reduces leaks and blockages, minimizes maintenance, and ensures consistent treatment by continuously monitoring for leaks and blockages, enhancing patient comfort and therapy efficacy.
Implementation Method 1
The first layer can comprise a foam
Implementation Method 2
The first layer can comprise a foam
Implementation Method 3
The bridge can also have an inner surface, an outer surface, and a thickness between the inner surface and the outer surface. The bridge can include a first lumen formed on the inner surface and along a length of the bridge
Implementation Method 4
reducing pressure in proximity to a tissue site can augment and accelerate growth of new tissue at the tissue site
Data Source
AI summary
An apparatus for managing fluid from a tissue site may include a first layer and a second layer. The first layer may comprise a first end, a second end, a first surface, a thickness between the first surface and the second surface, a first fluid pathway disposed in the first surface, and a second fluid pathway disposed in the first surface. The first fluid pathway and the second fluid pathway can extend from the first end to the second end. The second layer may have a first end, a second end, a first surface, and a second surface. The second surface of the second layer can be coupled to the first surface of the first layer.