Sulphonated Hydrogel Dressing for Chronic Ulcer Management
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Solution Overview
Problem
Current treatments for chronic ulcerous skin lesions are inadequate due to issues such as maceration, incomplete exudate absorption, contact dermatitis, frequent dressing changes causing pain and increased healthcare costs, and the need for opiate pain relief leading to dependency.
Innovation Solution
A hydrogel dressing with a hydrophilic polymer carrying multiple pendant sulphonyl groups and optionally pendant carboxylic groups, which provides a controlled-moisture environment, antimicrobial action, wound debridement, pain relief, and promotes healing by selectively concentrating naturally exuded salts in the wound bed without external bioactive agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional wound dressings are used to manage chronic ulcerous skin lesions, then exudate absorption is provided, but maceration and contact dermatitis occur, and frequent dressing changes are required causing pain and increased healthcare costs
Solution Approach 1:
The patent applies parameter changes by modifying the chemical composition of the wound dressing through incorporation of sulphonated proteoglycans and specific ion channels. This changes the biochemical parameters of the dressing to enable selective ion transport and controlled moisture regulation, thereby maintaining wound healing effectiveness while preventing maceration and contact dermatitis through reduced irritancy and optimized exudate management
Solution Approach 2:
The patent uses composite materials by combining multiple functional components in a single dressing system: hydrophilic polymer matrix, sulphonated proteoglycans (heparin, chondroitin sulfate, dermatan sulfate), and ion channel modulators. This composite structure enables simultaneous exudate absorption, selective ion transport, and anti-inflammatory effects, resolving the contradiction between effective wound management and prevention of harmful skin reactions
2Reliability
If frequent dressing changes are performed to manage chronic wounds, then wound cleanliness is maintained, but patient pain increases and healthcare costs rise
Solution Approach 1:
The patent implements continuity of useful action through a dressing system that maintains continuous wound care benefits without frequent removal and reapplication. The hydrogel-based dressing with embedded sulphonated proteoglycans and ion channel modulators provides sustained exudate management, ion regulation, and anti-inflammatory effects over extended periods, reducing the frequency of dressing changes while maintaining wound cleanliness and patient comfort
Solution Approach 2:
The patent applies self-service through the dressing system's ability to autonomously regulate wound environment without frequent human intervention. The hydrogel matrix with incorporated proteoglycans and ion channel modulators automatically absorbs exudate, regulates ion concentrations, and maintains optimal wound conditions, eliminating the need for frequent manual dressing changes and reducing both patient discomfort and healthcare costs
3Reliability
If traditional wound treatments are used, then wound healing is attempted, but opiate pain relief is required leading to dependency
Solution Approach 1:
The patent converts harmful factors into beneficial effects by incorporating ion channel modulators and anti-inflammatory agents within the hydrogel dressing. These components naturally reduce wound pain and inflammation through physiological mechanisms, transforming the need for external opiate pain relief into an self-regulating system that eliminates dependency while maintaining effective wound healing through controlled moisture and ion regulation
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 hydrogel dressing reduces pain, exudation, and malodour, enhances wound debridement, and promotes healing with fewer dressing changes, reducing healthcare costs and minimizing opiate dependency, while effectively managing chronic ulcerous skin lesions without the need for additional bioactive agents.
Implementation Method 1
a hydrogel dressing in contact with the wound provides in use a controlled-moisture environment for the wound
Implementation Method 2
The hydrogel used is a certain type of hydrous hydrophilic (ionic) polymer
Implementation Method 3
selective uptake of proteins and ions from the wound
Implementation Method 4
The ions covalently linked to the polymer molecule are anions; the cations are present as counterions
Implementation Method 5
beneficial antimicrobial action
Implementation Method 6
beneficial wound debridement
Data Source
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AI summary
The invention provides a method of treating a wound (for example, a chronic ulcerous skin lesion) in a human or non-human mammal (particularly a human). The wound is contacted with a topical hydrogel composition comprising a hydrophilic polymer carrying multiple pendant sulphonyl groups, optionally with multiple pendant carboxylic groups, on each polymer molecule.