Extensible Wound Dressing With Elastic Modulus Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wound dressings lack sufficient extensibility, which restricts their ability to accommodate the natural movement of the skin and wound healing process effectively.
Innovation Solution
A wound dressing assembly comprising an extensible absorbent body with a positioning adhesive and a backing layer, where the absorbent body has an elastic modulus equal to or lower than the backing layer, allowing directional extension of the backing layer to correspondingly extend the absorbent body, while a less extensible wound contacting layer prevents restriction on the absorbent body's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the absorbent body is made less extensible to maintain structural integrity, then the dressing stability improves, but the ability to accommodate skin movement deteriorates
Solution Approach 1:
The patent applies parameter changes by carefully controlling the elastic modulus of the absorbent body to be less than or equal to that of the backing layer. This parameter relationship ensures that when the backing layer is extended, the absorbent body follows suit without resisting, thereby achieving both stability and extensibility. The specific parameter control (elastic modulus ratio) resolves the contradiction between maintaining structural integrity and accommodating skin movement.
2Adaptability or versatility
If the absorbent body is made more extensible to accommodate skin movement, then the adaptability improves, but the structural integrity deteriorates
Solution Approach 1:
The patent resolves this contradiction through parameter changes by establishing that the absorbent body's elastic modulus must be less than or equal to the backing layer's elastic modulus. This ensures the absorbent body is sufficiently extensible to accommodate skin movement while maintaining structural integrity through the controlled relationship between the two layers' mechanical properties.
3Adaptability or versatility
If the absorbent body is extended directionally to accommodate wound movement, then the adaptability improves, but the absorbency capacity deteriorates
Solution Approach 1:
The patent addresses this contradiction through parameter changes by controlling the elastic modulus relationship between the absorbent body and backing layer. This ensures that directional extension of the backing layer causes corresponding extension of the absorbent body without compromising its absorbency capacity, as the absorbent body maintains its structural integrity during stretching.
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 solution enhances the extensibility of wound dressings, facilitating better skin movement and wound healing by ensuring the absorbent body can stretch directionally without restriction, maintaining its ability to absorb and retain liquids effectively.
Implementation Method 1
a positioning adhesive contacting at least a portion of the second surface of the absorbent body; and an extensible backing layer adhered to the second surface of the absorbent body by the positioning adhesive
Implementation Method 2
an extensible absorbent body... maintaining its ability to absorb and retain liquids effectively
Implementation Method 3
absorbent body having a first surface and a second surface... capable of absorbing and retaining liquids
Data Source
AI summary
The present invention relates to dressings such as bandages improved extensibility. The present invention further relates to dressings comprising an absorbent body and backing layer having improved extensibility.