Low Profile Wound Therapy Connector With Pneumatic Isolation
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Solution Overview
Problem
Current negative-pressure therapy systems for wound treatment lack efficient mechanisms for delivering negative pressure and fluid management, leading to issues with fluid flow and pressure sensing, which can result in blockages and reduced effectiveness in wound healing.
Innovation Solution
A low-profile, breathable conduit system with pneumatically isolated fluid pathways is introduced, featuring a dressing interface with a pressure feedback path and a negative-pressure delivery path, utilizing hydrophobic materials to prevent exudate ingress and clotting, and a pressure-offloading layer to distribute compressive forces, enhancing resistance to collapse and blockage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single fluid pathway is used in the conduit system, then the device complexity is reduced, but the reliability is worsened due to potential blockages and lack of pressure feedback
Solution Approach 1:
The single fluid pathway is divided into two separate pathways: a negative-pressure delivery pathway and a pressure feedback pathway. This segmentation allows each pathway to serve its specific function independently, preventing blockages in one pathway from affecting the other, thereby improving reliability while maintaining manageable device complexity through the use of hydrophobic materials that prevent exudate ingress.
Solution Approach 2:
A hydrophobic material is introduced as an intermediary element within the fluid pathways. This material acts as a mediator that prevents exudate and contaminants from blocking the pathways while allowing the negative pressure and feedback signals to pass through, thus ensuring continuous reliable operation without requiring complex cleaning mechanisms.
2Object-affected harmful factors
If the conduit system is made breathable to allow gas exchange, then the wound healing environment is improved, but the negative pressure delivery is worsened due to potential pressure leakage
Solution Approach 1:
Different regions of the conduit system are assigned different properties: the outer cover is made breathable to allow gas exchange and prevent contamination at the wound site, while the inner fluid pathways are made hydrophobic to maintain negative pressure integrity. This local differentiation of material properties allows the system to simultaneously achieve breathability for wound healing and pressure maintenance for therapy effectiveness.
3Ease of operation
If the dressing interface is made low-profile to reduce pressure on surrounding tissue, then the comfort and adaptability are improved, but the resistance to collapse under compression is worsened
Solution Approach 1:
The dressing interface is constructed as a composite structure combining a low-profile outer cover made of flexible breathable material with an inner hydrophobic fluid pathway system. This composite design allows the outer layer to provide comfort and adaptability by conforming to tissue contours while the inner hydrophobic pathways maintain their structural integrity and resist collapse under compression, ensuring both low-profile comfort and pressure delivery effectiveness.
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 maintains negative pressure and fluid flow, reducing the risk of blockages and improving wound healing by ensuring consistent delivery and sensing of pressure, thereby accelerating tissue growth and reducing healing times.
Implementation Method 1
utilizing hydrophobic materials to prevent exudate ingress and clotting
Implementation Method 2
a pressure-offloading layer to distribute compressive forces, enhancing resistance to collapse and blockage
Implementation Method 3
A low-profile, breathable conduit system with pneumatically isolated fluid pathways is introduced
Data Source
AI summary
Systems, apparatuses, and methods for providing negative pressure to a tissue site are disclosed. Illustrative embodiments may include an apparatus or system for delivering negative-pressure to a tissue site, which can be used in conjunction with low-profile distribution components for wound therapy. Such apparatus may include a low-profile dressing interface or connector comprising at least two fluid pathways fluidly coupled to a recessed space of the connector, one for providing negative pressure to a tissue interface or manifold and the other for sensing the negative pressure within the recessed space adjacent the tissue interface. In some embodiments, a pressure-offloading layer may be disposed against at least one of the fluid pathways. The pressure-offloading layer may comprise a polymeric foam to distribute compressive forces being applied to the dressing interface, thereby enhancing resistance of the fluid pathways to collapsing and blockage when the dressing interface is subject to external compression. In some embodiments, two pressure-offloading layers may be utilized.