Extensible Dressings With Pleated Resilient Layer
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Solution Overview
Problem
Conventional wound dressings lack extensibility, making it difficult for them to conform to body contours and move with the skin surface, which can hinder wound healing and comfort.
Innovation Solution
A dressing comprising a layer of resilient material with pleats and a backing layer attached by discrete adhesive regions, allowing the dressing to stretch and conform to body contours while maintaining adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dressing uses conventional materials and construction, then it provides basic wound coverage and protection, but it lacks extensibility and cannot conform to body contours or move with skin surface
Solution Approach 1:
The backing layer is segmented into discrete adhesive regions rather than continuous adhesive coverage. This segmentation allows the resilient material layer to extend and conform to body contours while the discrete adhesive regions maintain structural integrity and attachment to the skin without restricting movement.
Solution Approach 2:
The dressing incorporates a layer of resilient material with pleats that can dynamically extend and retract with skin movement. The pleated structure allows the material to adapt to body contours and move with the skin surface while maintaining wound coverage and protection.
2Adaptability or versatility
If a dressing is made extensible to move with skin, then it improves conformability and comfort, but it may compromise adhesion and structural stability
Solution Approach 1:
The adhesive is applied in discrete regions rather than continuously across the entire backing layer. This segmentation allows the resilient material to extend freely in non-adhesive areas while maintaining reliable attachment at specific anchor points, thus preserving both extensibility and adhesion strength.
Solution Approach 2:
Different regions of the backing layer have different properties: areas with discrete adhesive regions provide strong attachment, while areas without adhesive allow for extension and movement. This local differentiation enables the dressing to simultaneously achieve extensibility and adhesion reliability.
3Adaptability or versatility
If a dressing uses discrete adhesive regions instead of continuous adhesive, then it improves extensibility and conformability, but it increases manufacturing complexity
Solution Approach 1:
The adhesive application is segmented into discrete regions that can be efficiently applied using modern manufacturing techniques such as screen printing, spray application, or adhesive tapes. This segmentation simplifies the manufacturing process compared to achieving uniform thin-layer adhesive coverage while maintaining the extensibility benefits.
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 provides improved extensibility and conformability to body contours, enhancing wound healing and user comfort by allowing for movement without restricting the skin.
Implementation Method 1
a layer of resilient material... which is extensible so as to at least partially conform to a body contour at wound surface upon stretching of the dressing
Implementation Method 2
a backing layer attached to the layer of resilient material by discrete adhesive regions disposed on a surface of the layer of resilient material
Data Source
AI summary
The present invention relates to dressings such as bandages or tapes improved extensibility. The present invention further relates to dressings such as bandages or tapes which are extensible so as to at least partially conform to a body contour at wound surface upon stretching of the dressing.