Foldable Wound Dressing for Contoured Body Areas
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Solution Overview
Problem
Conventional wound dressings face challenges in applying to contoured body areas, such as the sacrum, without creasing or wrinkling, and in managing high fluid exudation while resisting maceration and desiccation, especially under pressure.
Innovation Solution
A wound dressing with a fibrous absorbent pad capable of folding, a flexible adhesive layer, and a design that includes a central fold line and lobed shape to enhance adhesion and fluid handling, using gel-forming fibers for high absorbency and pressure resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional planar adhesive dressing is applied to contoured body areas, then adhesion to skin is achieved, but creasing and wrinkling of the skin and dressing occur
Solution Approach 1:
The absorbent pad is divided into two parts by a fold line, allowing the dressing to be folded to match contoured body surfaces. This segmentation enables the dressing to conform to curves and angles without creasing the skin, while the adhesive layer maintains reliable adhesion to the skin surface.
2Reliability
If a conventional planar adhesive dressing is applied to contoured body areas, then adhesion to skin is achieved, but it becomes difficult and time-consuming to apply accurately over contours
Solution Approach 1:
The fold line is pre-formed in the absorbent pad during manufacturing, allowing the dressing to be easily folded and shaped to match contoured body surfaces before application. This preliminary preparation eliminates the need for complex shaping during application, reducing application time while maintaining accurate placement on contours.
3Quantity of substance
If alternative absorbent materials are used to tailor dressing properties, then fluid handling capacity is improved, but the dressing cannot be folded as in prior art
Solution Approach 1:
The absorbent pad is segmented by a fold line that extends through its thickness, enabling high-capacity absorbent materials to be used while maintaining foldability. The fold line allows the pad to be bent without compromising the structural integrity or fluid handling capacity of the absorbent material.
4Quantity of substance
If the absorbent pad is made larger to increase absorbency, then fluid handling capacity is improved, but adhesion to surrounding skin is reduced
Solution Approach 1:
The dressing features a lobed square shape with extended lobes at corners that provide additional adhesive surface area in regions where skin adhesion is difficult to achieve. This local quality enhancement ensures reliable adhesion to surrounding skin even when the central absorbent pad is large, by concentrating adhesive capability in strategic peripheral locations.
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 effectively manages high fluid exudation, reduces skin maceration, maintains adhesion under pressure, and allows for non-traumatic removal, providing a conformable and durable solution for contoured areas like the sacrum.
Implementation Method 1
an absorbent pad having one or more lines about which the dressing can fold, the absorbent pad being capable of absorbing exudate
Implementation Method 2
The absorbent pad desirably transports wound fluid away from the wound and absorbs exudate while limiting lateral spread
Implementation Method 3
a flexible adhesive layer on the non-wound contacting side of the absorbent pad
Data Source
Figure 1~2
Figure 3
AI summary
A wound dressing for use on contoured areas of the body comprising: an absorbent pad having one or more lines about which the dressing can fold, the absorbent pad being capable of absorbing exudate and a flexible adhesive layer on the non-wound contacting side of the absorbent pad. Such a dressing has the advantage that it can use alternative or additional absorbent materials due to the positioning of the pad and provision of the fold line in the pad.