Transparent Hydrogel Dressing for Wound Observation

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Solution Overview

Problem

Current medical bandages are opaque, making it difficult to observe wounds without frequent removal, which can lead to irritation and increased infection risk, and transparent bandages face issues with adhesive sticking to the skin and inadequate exudate absorption.

Innovation Solution

A bandage design featuring a transparent hydrogel layer with antibacterial properties, supported by a silicone gel layer and a protective layer, allowing wound observation while absorbing exudate and reducing infection risk through a biocompatible adhesive and breathable structure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If transparent materials are used for the bandage, then wound observation is enabled, but adhesive sticks to patient's skin causing discomfort

Engineering Contradiction:

Improvewound observation capabilityVSAvoidadhesive skin sticking

Core Design Contradiction:

Loss of informationVSObject-affected harmful factors

Solution Approach 1:

The bandage is divided into multiple functional layers: a transparent top film for observation, a silicone gel layer for gentle adhesion, and a hydrogel layer for exudate absorption. This segmentation allows each layer to perform its specific function without the adhesive directly contacting the wound or causing skin sticking.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The silicone gel layer acts as an intermediary between the transparent top film and the patient's skin, providing a non-irritating adhesive interface that prevents direct contact between the transparent material and skin, thereby eliminating the sticking problem while maintaining transparency for observation.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of information

If transparent film is used for the bandage, then wound observation is possible, but wound exudate cannot be absorbed timely

Engineering Contradiction:

Improvewound observation capabilityVSAvoidexudate absorption capacity

Core Design Contradiction:

Loss of informationVSQuantity of substance

Solution Approach 1:

The bandage structure separates the observation function (transparent top film) from the absorption function (hydrogel layer), allowing each to optimize its performance independently while working together as a unified system.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The hydrogel layer serves as an intermediary absorption medium between the wound and the transparent top film, capturing exudate before it can compromise the adhesion or clarity of the upper layers, thus maintaining both observation capability and absorption efficiency.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Quantity of substance

If multilayer structure is used in transparent film, then exudate absorption is improved, but bubbles form on surface interfering with observation

Engineering Contradiction:

Improveexudate absorption capacityVSAvoidobservation clarity

Core Design Contradiction:

Quantity of substanceVSLoss of information

Solution Approach 1:

The top film is designed as a single-layer flexible transparent film that conforms to the wound area without trapping air bubbles, while the hydrogel layer beneath provides the necessary absorption capacity, separating the optical function from the absorption function.

Inventive Principle:

Principle #30Flexible shells and thin films

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

Enables continuous wound observation without removal, effective exudate absorption, and reduced infection risk, with antibacterial efficacy exceeding 99.9% and contact pressure reduction by over 50%, promoting healing and preventing pressure ulcers.

Implementation Method 1

the hydrogel layer includes a support layer supporting hydrogel material

Methodology Applied

Scientific EffectCapillary action: Capillary Action

Implementation Method 2

the hydrogel layer includes a support layer supporting hydrogel material

Methodology Applied

Scientific EffectOsmosis: Osmosis

Implementation Method 3

the silicone gel layer, hydrogel layer, adhesive layer and top film are transparent to allow observation of a wound through the medical dressing

Methodology Applied

Scientific EffectAdhesion: Adhesive

Implementation Method 4

the silicone gel layer, hydrogel layer, adhesive layer and top film are transparent to allow observation of a wound through the medical dressing

Methodology Applied

Scientific EffectLight transmission: Light

Implementation Method 5

the hydrogel layer includes a support layer supporting hydrogel material; the bandage may include antibacterial material to prevent infection

Methodology Applied

Scientific EffectAntibacterial action:

Data Source

PatentUS20240016974A1Transparent dressing with hydrogel layer

Publication Date: 2024.01.18 DUKAL LLC

AI summary

A dressing including a top film, an adhesive layer positioned adjacent the top film closer to a user's skin when the bandage is in use, a hydrogel layer including a support layer, below the adhesive layer closer to the user's skin when the bandage is in use, and a lower perforated layer positioned under the hydrogel layer for adhering the bandage to a user's skin. All of the layers may be transparent or at least partially translucent to allow a user to view the user's skin through the bandage. The hydrogel layer provides pressure distribution to reduce stress on the user's skin and reduce the likelihood of pressure ulcers.