Multi-layer Wound Dressing with Activated Carbon
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wound dressings are inadequate in providing sufficient contamination protection, odor adsorption, and absorption of excess secretions, particularly for complex or chronic wounds, and often rely on precious metals that pose side effects and do not effectively accelerate wound healing.
Innovation Solution
A multi-layer wound dressing comprising a hydrocolloid layer, preferably collagen, and an activated carbon layer with a high micropore volume fraction, which synergistically enhances wound healing by providing bacteriostatic protection, moisture management, and odor absorption without the need for precious metals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If precious metals (e.g., silver) are used for bacteriostatic protection in wound dressings, then contamination protection is improved, but side effects increase and cost increases
Solution Approach 1:
The patent replaces expensive precious metals with activated carbon, a cost-effective material that provides comparable or superior bacteriostatic protection without the harmful side effects associated with metal ions. The activated carbon layer is designed as a disposable component that can be discarded after use, eliminating long-term exposure risks.
Solution Approach 2:
The patent changes the material parameter from metallic (silver, zinc) to carbon-based, fundamentally altering the chemical properties while maintaining the bacteriostatic function. This parameter change eliminates ion release and associated toxicity while preserving antimicrobial efficacy through adsorption mechanisms.
2Reliability
If activated carbon with high micropore volume fraction is used, then odor adsorption and contamination protection are improved, but manufacturing complexity increases
Solution Approach 1:
The patent utilizes activated carbon's inherent porous structure, specifically requiring a micropore volume fraction of at least 60%, to provide enhanced odor adsorption and contamination protection. The porous structure naturally provides high surface area for adsorption without requiring additional complex manufacturing steps.
Solution Approach 2:
The patent creates a composite wound dressing structure combining hydrocolloid material with activated carbon layer. This composite approach integrates multiple functions (moisture management, odor adsorption, contamination protection) into a single product without significantly increasing manufacturing complexity, as the layers can be produced separately and assembled.
3Productivity
If multiple layers are added to provide comprehensive wound care functions, then wound healing acceleration is improved, but device complexity increases
Solution Approach 1:
The patent divides the wound dressing into distinct functional layers: a hydrocolloid layer for moisture management and an activated carbon layer for odor adsorption and contamination protection. This segmentation allows each layer to perform its specific function efficiently while maintaining overall structural simplicity.
Solution Approach 2:
The activated carbon layer serves multiple functions simultaneously: odor adsorption, contamination protection, and potential wound healing acceleration. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving comprehensive wound care.
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 dressing significantly accelerates wound healing, offers excellent protection against contamination, and maintains a conducive environment for tissue regeneration, effectively managing moisture and reducing infection risk, even against multi-resistant hospital germs, without the use of antibiotics.
Implementation Method 1
the activated carbon of the activated carbon-containing layer has a micropore volume fraction formed by micropores with pore diameters of ≤ 200 nm (20 Å), based on the total pore volume of the activated carbon of at least 60%
Implementation Method 2
the multi-layer structure contains at least one layer containing at least one hydrocolloid, preferably collagen
Implementation Method 3
synergistically enhances wound healing by providing bacteriostatic protection, moisture management, and odor absorption
Data Source
Figure 1~2
AI summary
The invention relates to a wound dressing which is particularly suitable for therapeutically dressing wounds. Said wound dressing consists of a multi-layered structure comprising at least one layer containing at least one hydrocolloid, preferably collagen, ("hydrocolloid layer" or "collagen layer") and at least one layer containing an activated carbon ("activated carbon layer").