Wound Dressing Adhesive Border Wicking Perspiration

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Solution Overview

Problem

Conventional wound dressings face challenges in adhering to wound sites due to excessive wound exudate and perspiration, leading to premature lifting and inadequate absorption, necessitating improved management of moisture and fluid leakage.

Innovation Solution

A wound dressing comprising a patient interface layer, a wicking layer, and an absorbent layer, with a cover layer forming an adhesive border to prevent fluid leakage, where the wicking layer peripherally wicks perspiration and wound exudate from underneath the adhesive border towards the absorbent layer for effective absorption and evaporation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If a foam or absorbent layer is used to absorb wound exudate, then the absorption capacity is improved, but the dressing may prematurely lift from the skin due to perspiration

Engineering Contradiction:

Improveabsorption capacityVSAvoidadhesion stability

Core Design Contradiction:

Quantity of substanceVSReliability

Solution Approach 1:

The wound dressing is divided into distinct functional layers: an adhesive border layer for securing the dressing, a wicking layer for transporting perspiration, and an absorbent layer for absorbing wound exudate. This segmentation allows each layer to perform its specific function optimally without interfering with the adhesion stability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The wicking layer acts as an intermediary between the adhesive border and the absorbent layer, as well as between the skin and the dressing core. It transports perspiration laterally from the adhesive border area to the absorbent layer, preventing moisture accumulation that would compromise adhesion while maintaining the integrity of the absorbent layer.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If materials with high moisture vapor transmission rates are used, then perspiration management is improved, but wound exudate may leak from the dressing

Engineering Contradiction:

Improveperspiration managementVSAvoidfluid leakage

Core Design Contradiction:

Object-affected harmful factorsVSObject-generated harmful factors

Solution Approach 1:

Different regions of the wound dressing have different properties: the adhesive border provides secure attachment and fluid barrier, the wicking layer provides moisture transport pathways, and the absorbent layer provides high absorption capacity. This local differentiation allows high MVTR materials to be used in the center while maintaining leak prevention at the periphery.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The adhesive border is designed to trap perspiration and wound exudate that reach it, converting the potential harm of fluid leakage into a benefit by directing these fluids laterally through the wicking layer to the absorbent layer, where they are contained and absorbed.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Quantity of substance

If the absorbent layer is made large to increase absorption, then the absorption capacity is improved, but the dressing complexity increases

Engineering Contradiction:

Improveabsorption capacityVSAvoiddressing structure

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The absorbent function is segmented from the adhesive function by using separate layers. The adhesive border layer provides secure attachment with a smaller surface area, while the absorbent layer can be optimized for maximum absorption capacity without compromising adhesion. This segmentation simplifies the overall design by assigning specific functions to specific layers.

Inventive Principle:

Principle #1Segmentation

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 wound exudate management, prevents dressing lift-off, and maintains fluid absorption within the dressing, reducing the risk of maceration and fluid leakage, thereby promoting wound healing and patient comfort.

Implementation Method 1

the wicking layer is configured to peripherally wick perspiration from underneath the adhesive border towards the center of the wicking layer and upwards towards the absorbent layer

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Implementation Method 2

wound dressings include a layer of foam or other absorbent layer configured to absorb the wound exudate from the wound bed

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Implementation Method 3

construct wound dressings with materials having high moisture vapor transmission rates (MVTR)

Methodology Applied

Scientific EffectEvaporation: Evaporation

Data Source

PatentUS12121418B2Wound dressing construct with high wicking adhesive border

Publication Date: 2024.10.22 SOLVENTUM INTELLECTUAL PROPERTIES CO

AI summary

A wound dressing includes a patient interface layer, a wicking layer, an absorbent layer, and a cover layer. The patient interface layer is configured to engage a wound bed and has a first side and a second side, the second side configured to face the wound bed. The wicking layer, absorbent layer, and cover layer all also have a first side and a second side. A perimeter of the first side of the wicking layer is adhered to the second side of the cover layer, forming an adhesive border surrounding the wicking layer and the absorbent layer, and the wicking layer is configured to peripherally wick perspiration from underneath the adhesive border towards the center of the wicking layer and upwards towards the absorbent layer.