Wound Dressing Air Permeable Foam Layer Activated Carbon
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Solution Overview
Problem
Current wound dressings fail to provide adequate air permeability, absorption of wound fluid, and antimicrobial protection simultaneously, leading to inadequate wound healing and increased risk of infection, especially with multi-resistant hospital germs.
Innovation Solution
A wound dressing with a multi-layer structure featuring an air-permeable foam layer and an activated carbon layer, where the air-permeable layer is formed by a hydrocolloid fleece or foam and the activated carbon layer is positioned to absorb and immobilize pathogens, creating a synergistic effect for enhanced wound healing and infection prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a wound dressing uses a multi-layer structure with activated carbon layer, then antimicrobial protection and pathogen immobilization are improved, but air permeability deteriorates
Solution Approach 1:
The patent employs activated carbon with a porous structure that provides both antimicrobial protection through adsorption of pathogens and maintains air permeability through its porous architecture. The porous nature of activated carbon allows air to pass through while the adsorptive properties trap and immobilize microorganisms and toxins, thus resolving the contradiction between antimicrobial effectiveness and breathability.
Solution Approach 2:
The wound dressing combines activated carbon layer with other materials in a composite structure that integrates antimicrobial functionality with breathable properties. The composite design allows the activated carbon to provide pathogen immobilization while the overall structure maintains adequate air permeability for wound healing.
2Object-affected harmful factors
If a wound dressing uses hydrocolloid foam layer, then fluid absorption and ventilation are improved, but structural stability deteriorates
Solution Approach 1:
The patent applies different materials with specific properties to different layers of the wound dressing. The hydrocolloid foam layer is designed with specific local properties optimized for fluid absorption and ventilation, while other layers provide structural support. This local differentiation allows each layer to excel at its specific function without compromising overall structural stability.
Solution Approach 2:
The wound dressing uses a composite multi-layer structure where hydrocolloid foam is combined with other materials that provide structural reinforcement. The composite design allows the hydrocolloid layer to perform fluid absorption and ventilation functions while the composite structure as a whole maintains adequate mechanical strength and stability.
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 by improving ventilation, fluid absorption, and antimicrobial protection, reducing the risk of infection and the need for antibiotics, while being well-tolerated and free from toxic side effects.
Implementation Method 1
an air-permeable layer with a porous and/or foam-based structure
Implementation Method 2
at least one sorbent in the form of activated carbon
Data Source
Figure 1~3
AI summary
The invention relates to a wound dressing which is particularly suitable for therapeutically dressing wounds. Said wound dressing comprises at least one air permeable layer having a porous and/or foam-based structure, particularly in the form of a solid foam ("foam layer"), and at least one sorbent in the form of activated carbon.