Negative-Pressure Wound Dressing With Segmented Foam And Transparent Manifold
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Solution Overview
Problem
Current negative-pressure wound therapy systems lack efficient designs for fluid management and tissue visualization, leading to suboptimal wound healing and increased risk of maceration and tissue ingrowth.
Innovation Solution
A dressing system comprising multiple layers, including a non-porous film, transparent manifold layers with apertures and blisters, and a foam layer that allows fluid transfer while minimizing tissue exposure to the foam, enabling effective fluid management and visualization of the wound site.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a foam layer is used in negative-pressure wound therapy, then fluid management is improved, but tissue exposure to the foam increases causing maceration and tissue ingrowth
Solution Approach 1:
The foam layer is segmented into discrete zones separated by impermeable barriers, creating distinct fluid management regions that limit tissue exposure while maintaining effective fluid removal capabilities
Solution Approach 2:
Impermeable barriers are introduced as intermediary elements between the foam layer and tissue, preventing direct contact between foam and tissue while allowing fluid to be managed effectively through the barrier system
2Reliability
If the dressing obscures the wound site, then fluid management is improved, but visualization of the wound site is reduced
Solution Approach 1:
The dressing incorporates transparent or translucent materials that maintain structural functionality while allowing visual observation of the wound site, eliminating the need to remove the dressing for inspection
Solution Approach 2:
Thin transparent film layers are used to create the dressing structure, providing fluid management capabilities while maintaining optical transparency for continuous wound site visualization
3Object-affected harmful factors
If frequent dressing changes are made to prevent maceration, then maceration risk is reduced, but treatment time and complexity increase
Solution Approach 1:
The dressing incorporates protective barriers and controlled fluid management features that prevent maceration before it occurs, allowing extended wear time without increasing maceration risk
Solution Approach 2:
The dressing provides enhanced fluid management capacity beyond basic requirements, using impermeable barriers and segmented foam zones to create a protective environment that extends dressing change intervals
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 dressing system enhances wound healing by promoting granulation tissue growth, reducing maceration, and allowing extended wear times while preventing tissue ingrowth into the dressing layers, thus improving therapeutic outcomes and user convenience.
Implementation Method 1
a non-porous film
Implementation Method 2
transparent manifold layers with apertures and blisters
Implementation Method 3
a foam layer that allows fluid transfer while minimizing tissue exposure to the foam
Data Source
AI summary
Dressings for treating a tissue site with negative pressure are disclosed, which may include a dressing having at least three layers assembled in a stacked relationship. In one example embodiment, a first film may comprise a non-porous material and a plurality of fluid restrictions. A first manifold layer may be adjacent to the first film and may comprise a second film of a transparent material having blisters and a manifold area. The first manifold layer may further comprise apertures configured to allow fluid transfer through the second film. A second manifold layer may be adjacent to the first manifold layer and may comprise foam having a contact area that is less than the manifold area of the first manifold layer.