Perforated Multilayer Wound Dressing for Exudate and NO Release
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Solution Overview
Problem
Current wound care products fail to effectively manage wound exudate and simultaneously release bioactive agents like nitric oxide (NO) in a synergistic manner, leading to interference and inefficiencies in wound healing.
Innovation Solution
A multilayered wound care product with a liquid-absorbing layer, an intermediate occlusive layer, and an active agent-releasing layer, where the occlusive layer prevents interference between exudate and active agents, allowing simultaneous exudate management and controlled release of bioactive agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-layer wound dressing is used to manage exudate, then exudate absorption is achieved, but bioactive agent release is interfered with and healing efficiency is reduced
Solution Approach 1:
The wound dressing is divided into three distinct functional layers: an upper liquid-absorbing layer for exudate management, an intermediate occlusive layer to prevent mixing, and a bottom active agent-releasing layer for controlled delivery. This segmentation allows each layer to perform its specific function without interfering with others, resolving the contradiction between exudate management and active agent release.
Solution Approach 2:
The intermediate occlusive layer acts as a mediator between the liquid-absorbing layer and the active agent-releasing layer. It prevents direct contact and potential interference between exudate and active agents while still allowing the dressing to function as a unified system, thereby enabling both exudate management and controlled active agent release simultaneously.
2Reliability
If multiple functional layers are added to manage both exudate and active agents, then wound healing efficiency improves, but device complexity increases
Solution Approach 1:
Each layer in the multilayer dressing is designed with a specific function that contributes to the overall wound healing process. The upper layer manages exudate, the intermediate layer provides occlusion and separation, and the bottom layer releases active agents. This multi-functional design allows a single dressing system to address multiple wound care needs simultaneously, improving overall efficacy while maintaining a structured but manageable complexity.
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 product optimizes wound healing by effectively managing exudate and releasing bioactive agents without interference, promoting a moist environment and enhancing healing processes.
Implementation Method 1
an upper liquid-absorbing layer
Implementation Method 2
The simplest absorptive materials exhibit void spaces within their structure for taking up the fluids
Implementation Method 3
an intermediate occlusive layer
Implementation Method 4
an active agent-releasing bottom layer... which releases nitric oxide (NO) and other active agents
Implementation Method 5
having common pores or perforations which enable the passage of wound exudate
Data Source
Figure 1A~1C
Figure 2
Figure 3
AI summary
The invention relates to a multi-layered wound care product comprising multilayered wound care product comprising an upper liquid-absorbing layer an intermediate occlusive layer; and an active agent-releasing bottom layer wherein the last two layers have common pores or perforations that enable the passage of wound exudate through said two layers to reach the liquid-absorbing layer. The invention further relates to the use of said multi-layered wound care product for treatment of acute and chronic wounds. The invention finally relates to a method of producing the multi-layered wound care product of the invention.