Extensible Dressing With Concentric Slitted Annuli for Joint Conformability
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Solution Overview
Problem
Conventional dressings lack sufficient extensibility and conformability to accommodate the dynamic contours of skin and joints, leading to discomfort and potential failure when applied to movable areas like joints, as they cannot dynamically conform to changing three-dimensional skin surfaces.
Innovation Solution
A dressing with a layer of non-cellulosic material featuring a pattern of concentric slitted annuli, where material free regions extend through the thickness and are arranged in a radially staggered pattern, allowing the dressing to expand and conform to changing skin contours while maintaining adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional dressings are applied to movable areas like joints, then they provide wound coverage, but they lack sufficient extensibility and conformability to accommodate dynamic skin contours, leading to discomfort and potential failure
Solution Approach 1:
The dressing incorporates an array of discrete protrusions distributed across its surface, each capable of independent deformation. This segmentation allows different regions of the dressing to move independently, accommodating the complex three-dimensional contours of joints and movable body parts while maintaining overall structural integrity and wound coverage.
Solution Approach 2:
The protrusions are designed to be resilient and movable, enabling the dressing to dynamically adapt to changing skin contours during movement. The resilient nature of the protrusions allows them to flex and deform with skin motion, ensuring continuous conformability and adherence throughout the range of motion without compromising wound protection.
2Stability of the object's composition
If a dressing is made rigid to maintain structural integrity, then it provides stable wound coverage, but it cannot dynamically conform to changing three-dimensional skin surfaces
Solution Approach 1:
By dividing the dressing into multiple discrete protrusion elements rather than a continuous rigid structure, the design achieves both individual element stability and overall system flexibility. Each protrusion maintains its structural integrity while the array as a whole can deform to conform to complex surfaces.
Solution Approach 2:
The protrusions are constructed as resilient, flexible elements that can deform under stress while returning to their original configuration. This flexibility allows the dressing to adapt to three-dimensional skin contours while the material properties maintain sufficient structural integrity for stable wound coverage.
3Adaptability or versatility
If a dressing is made highly extensible to accommodate joint movement, then it maintains adherence to movable areas, but it may compromise wound protection and structural stability
Solution Approach 1:
The segmented protrusion structure allows localized deformation at each element while the collective array maintains overall coverage integrity. This segmentation enables the dressing to extend and conform to joint movements without creating weak points that would compromise wound protection, as each protrusion independently adapts while maintaining its protective function.
Data Source
AI summary
The present invention generally relates to dressings such as bandages or tapes having improved extensibility and conformability to human skin and joints.