Lattice Wound Dressing Extensibility and Visibility
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Solution Overview
Problem
Conventional wound dressings, particularly those with foam elements, face limitations in extensibility, visibility, and controlled exudate management, requiring frequent changes and offering minimal visibility and flexibility when applied to curved areas.
Innovation Solution
A wound dressing with a lattice structure formed by slits that expand into apertures upon application, allowing for increased extensibility and visibility without material weakening, and a retaining mechanism to maintain the extended conformation for controlled exudate release and contractile force promotion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If foam-based materials are used for wound dressings, then absorbency is improved, but extensibility deteriorates
Solution Approach 1:
The foam material is segmented into a lattice structure with interconnected cells and apertures. This segmentation allows the material to extend by opening up the lattice structure while maintaining the foam's absorbent properties within the cell walls, resolving the contradiction between absorbency and extensibility.
Solution Approach 2:
The lattice structure is designed to be dynamic, transitioning from a compressed state during application to an expanded state during wear. The apertures can open and close dynamically, allowing the dressing to adapt to body movements while maintaining both absorbency and extensibility.
2Quantity of substance
If opaque foam materials are used, then absorbency is improved, but visibility deteriorates
Solution Approach 1:
The lattice structure creates local transparent regions (apertures) within the otherwise opaque foam material. This local quality change allows visibility of the wound through the apertures while maintaining the absorbent foam structure in the cell walls, resolving the contradiction between absorbency and visibility.
3Loss of information
If lattice structure with apertures is created, then visibility is improved, but material strength deteriorates
Solution Approach 1:
The lattice structure combines the foam material with a lattice framework, creating a composite structure. The lattice provides structural strength while the apertures provide visibility, resolving the contradiction between visibility and material strength.
Solution Approach 2:
The lattice structure utilizes porous foam material where the cell walls maintain structural integrity while the interconnected apertures provide visibility. The porous structure allows light transmission without compromising the mechanical strength of the cell walls.
4Quantity of substance
If foam dressings are used, then absorbency is improved, but frequency of application deteriorates
Solution Approach 1:
The lattice structure enables continuous monitoring of the wound through the apertures, allowing for continuous assessment of exudate levels and wound healing progress. This continuity reduces the need for frequent dressing changes while maintaining high absorbency capacity.
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 lattice structure enhances wound dressing extensibility and visibility while maintaining structural integrity, allowing for controlled exudate release and promoting wound closure through contractile forces.
Implementation Method 1
the lattice having i) a first conformation, wherein the slit is substantially closed, and ii) a second conformation, wherein the lattice is stretched by the application of an extensive force expanding the slit to form an aperture
Data Source
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AI summary
The invention relates to a wound dressing, a method of manufacturing a wound dressing, and in particular to a material for use as and in a wound dressing.