EGCG Pre-emptive Priming for Scar Quality

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Solution Overview

Problem

Current scar management strategies often result in suboptimal scarring outcomes, particularly for hypertrophic and keloid scars, which can be challenging to treat and may have a significant physical and psychological impact on individuals.

Innovation Solution

The use of (-)-epigallocatechin-3-gallate (EGCG) as a topical agent for pre-emptive priming of the skin at potential surgical sites, applied at least 3 days prior to surgery, to enhance scar quality and reduce the risk of abnormal scarring.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If topical treatment is delayed until after wound healing and scar formation, then the treatment can be applied to established scars, but the scar quality outcome is suboptimal and abnormal scarring may have already occurred

Engineering Contradiction:
Improvescar quality outcomeVSAvoidtime delay in treatment initiation
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies EGCG topical treatment pre-emptively before surgical injury occurs, rather than waiting for wound healing or scar formation. This preliminary action modifies the skin's healing response in advance, preventing abnormal scarring before it can develop, thereby achieving superior scar quality outcomes without time delay.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent uses EGCG to prevent mast cell activation and excessive inflammation before injury occurs. This preliminary anti-action counteracts the harmful effects that would normally drive abnormal scarring, thereby improving scar quality by preventing the problematic processes before they can occur.

Inventive Principle:
Principle #9Preliminary anti-action

2Ease of manufacture

If conventional scar management is used, then treatment can be applied to existing scars, but hypertrophic and keloid scars may develop and are difficult to manage

Engineering Contradiction:
Improveease of scar managementVSAvoidrisk of hypertrophic and keloid scarring
Core Design Contradiction:
Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

The patent applies EGCG treatment before surgery to pre-emptively modify the skin's healing response. This preliminary action prevents mast cell activation and excessive inflammation that would otherwise lead to hypertrophic and keloid scarring, making scar management easier by preventing difficult-to-treat scar types before they develop.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent converts the potentially harmful inflammatory response that leads to abnormal scarring into a beneficial controlled response. By applying EGCG pre-emptively, the treatment transforms what would be harmful mast cell activation into a regulated process, preventing hypertrophic and keloid scar formation while maintaining normal healing functions.

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

3Manufacturing precision

If immediate topical application is made at the zone of injury, then scar thickness and angiogenesis are reduced, but the treatment must be applied precisely at the optimal time which is counterintuitive to conventional practice

Engineering Contradiction:
Improveprecision of treatment timingVSAvoidease of treatment implementation
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The patent applies EGCG treatment before surgery rather than at the time of injury or after scar formation. This preliminary action allows the treatment to be implemented easily in advance of the surgical procedure, eliminating the need for precise timing at the moment of injury while still achieving the desired reduction in scar thickness and angiogenesis.

Inventive Principle:
Principle #10Preliminary action

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

Pre-emptive priming with EGCG significantly reduces mast cell numbers, angiogenesis, and scar thickness while increasing elastin content, leading to improved cosmetic outcomes and a reduced risk of hypertrophic or keloid scars.

Implementation Method 1

Catechins are a family of phenolic compounds, naturally occurring in plants, such as green and black tea, which have been shown to have antioxidant, anti-inflammatory, antiangiogenic, antiallergic, and antimicrobial effects.

Methodology Applied
Scientific EffectAnti-inflammatory effect:

Implementation Method 2

Catechins are a family of phenolic compounds, naturally occurring in plants, such as green and black tea, which have been shown to have antioxidant, anti-inflammatory, antiangiogenic, antiallergic, and antimicrobial effects.

Methodology Applied
Scientific EffectAntiangiogenic effect:

Implementation Method 3

Pre-emptive priming with EGCG significantly reduces mast cell numbers, angiogenesis, and scar thickness while increasing elastin content

Methodology Applied
Scientific EffectElastin synthesis stimulation:

Implementation Method 4

Catechins are a family of phenolic compounds, naturally occurring in plants, such as green and black tea, which have been shown to have antioxidant, anti-inflammatory, antiangiogenic, antiallergic, and antimicrobial effects.

Methodology Applied
Scientific EffectAntioxidant effect:

Data Source

PatentEP4203912B1Method for reducing cutaneous skin scarring by pre-emptive priming and compounds and compositions comprising (-)-epigallocatechin-3-gallate for its implementation
Publication Date: 2025.02.19 SOS SCIENCE OF SKIN LTD
  • EP4203912B1 patent drawingFigure 1
  • EP4203912B1 patent drawingFigure 1
  • EP4203912B1 patent drawingFigure 2

AI summary

A method of enhancing the quality of a skin scar by topical application of an agent for improving scar quality is characterised in that said agent is pre-emptively applied to a potential surgical cutaneous site in advance of surgery, including surgery involving use of lasers. The topical agent may be a polyphenol, such as (-)-epigallocatechin-3-gallate (EGCG). Use of such a topical agent in advance of surgery leads to significant beneficial effects on dermal scarring by reducing mast cells, angiogenesis, skin thickness and simultaneously increasing elastin content. The topical agent may be applied directly or incorporated in a dressing, such as in a dermal patch comprising an adhesive silicone sheet, and can be worn both in the lead up to surgery and post-operatively.