Wound Dressing With Homogeneous Multi-Directional Stretch

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Solution Overview

Problem

Existing wound dressings lack the ability to stretch in multiple directions, leading to discomfort, prolonged healing times, and difficulty in evaluating wound progress due to inflexibility and the need for frequent changes, especially in sensitive or hard-to-reach areas.

Innovation Solution

A textile planar structure wound dressing with identical or near-identical stretching properties in two main directions, produced using chain weaving or Raschel warp-knitting machines, incorporating elastomeric fibers and silk for enhanced elasticity, permeability, and adaptability to body movements, allowing for pain-free and efficient wound healing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional gauze or hydrocolloid bandages are used, then wound coverage is provided, but the dressing becomes hard and inflexible causing patient pain during movement

Engineering Contradiction:

Improvestructural integrityVSAvoidflexibility during movement

Core Design Contradiction:

StrengthVSAdaptability or versatility

Solution Approach 1:

The wound dressing combines silk fibers with elastomeric fibers to create a composite textile structure that integrates both structural integrity and elasticity. The silk provides strength and wound contact quality, while the elastomeric fibers provide homogeneous stretching properties in multiple directions, resolving the contradiction between structural integrity and flexibility during movement.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention changes the physical parameters of the dressing material by incorporating elastomeric fibers that provide controlled elasticity. This allows the dressing to maintain its structural form while adapting its flexibility to match skin movement, eliminating the hardness and inflexibility of traditional dressings.

Inventive Principle:

Principle #35Parameter changes

2Object-affected harmful factors

If hydrocolloid bandages are used, then patient pain is reduced, but the dressing separates from awkward sites and requires frequent changes

Engineering Contradiction:

Improvepatient pain levelVSAvoiddressing retention time

Core Design Contradiction:

Object-affected harmful factorsVSDuration of action of stationary object

Solution Approach 1:

The invention changes the elasticity parameters of the dressing to match the physiological stretching properties of skin. This allows the dressing to conform to awkward anatomical sites and maintain adhesion during body movements, preventing separation and extending retention time without increasing patient pain.

Inventive Principle:

Principle #35Parameter changes

3Stability of the object's composition

If dressings with different elasticity in various directions are used, then structural stability is maintained, but the dressing cannot follow patient body movement adequately

Engineering Contradiction:

Improvestructural stabilityVSAvoidconformity to body movement

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The composite textile structure combines silk fibers for structural stability with elastomeric fibers that provide homogeneous elasticity in multiple directions. This composite structure maintains structural integrity while enabling the dressing to conform to body movements in all directions, resolving the contradiction between stability and adaptability.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The invention applies different fiber types in specific orientations within the textile structure. Silk fibers provide structural stability in certain directions while elastomeric fibers provide elasticity in other directions, creating a material with both stability and multi-directional conformity to body movement.

Inventive Principle:

Principle #3Local quality

4Object-affected harmful factors

If silicone-coated dressings are used, then wound protection is improved, but the bordering surface cannot be adequately reached with hydrophilic topical treatments

Engineering Contradiction:

Improvewound protectionVSAvoidaccessibility for topical treatment

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The invention applies silk fibers with inherent hydrophilic properties at the wound-contact surface, while the overall textile structure provides protective coverage. This localized hydrophilic quality allows bordering surface wounds to be adequately treated with hydrophilic topicals while maintaining wound protection through the textile structure.

Inventive Principle:

Principle #3Local quality

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 wound dressing provides homogeneous stretching properties, reducing pain and promoting rapid healing by conforming to body movements, maintaining wound contact, and facilitating gas and fluid exchange, while allowing for easy evaluation of wound progress without frequent changes.

Implementation Method 1

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentUS10085890B2Wound dressing, glove and method for production of a wound dressing

Publication Date: 2018.10.02 PREVOR INT

AI summary

According to the invention, a wound dressing may be further developed, whereby a wound dressing made from a planar structure with a first main direction of extension and at least one further main direction of extension, whereby the textile planar structure, at least along the main directions of extension comprises extensibility properties which differ by less than 80%, preferably less than 50%.