Adhesive Wound Dressing With Polysaccharide-Impregnated Absorbent Matrix
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing advanced wound dressings do not contain biologically active agents that effectively promote healing and require a secondary dressing for adherence, lacking optimal moisture maintenance and comfort during the healing process.
Innovation Solution
An adhesive wound dressing incorporating a breathable, porous polyethylene film with an absorbent layer of viscose, polyester, and polypropylene, impregnated with hyaluronic acid or its derivatives, providing a moist environment and promoting fibroblast migration, while adhering only to undamaged skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If advanced wound dressings are used to maintain moist microenvironment, then wound healing is promoted, but the dressings require additional secondary dressing for adherence and do not provide sufficient comfort
Solution Approach 1:
The patent combines multiple functions into a single integrated dressing structure: the polyurethane foam matrix provides both moisture retention and absorbency, while the adhesive layer integrated into the dressing structure eliminates the need for separate secondary dressings. This merging of functions reduces overall system complexity while maintaining healing promotion benefits.
Solution Approach 2:
The wound dressing is designed to perform multiple functions simultaneously: maintaining moist microenvironment, absorbing excess exudate, providing thermal insulation, controlling pain, protecting against infection, and adhering to skin without requiring additional dressings. This multi-functionality in a single device reduces the need for multiple separate components.
2Object-affected harmful factors
If conventional wound dressings are used for coverage and protection, then basic wound care is provided, but they do not maintain optimal moisture levels and require frequent changes
Solution Approach 1:
The patent changes the physical and chemical parameters of the dressing materials to optimize performance: the polyurethane foam matrix is engineered with specific porosity and absorbency characteristics, the adhesive layer is formulated with controlled adhesion strength, and the polysaccharide composition is optimized to maintain moisture balance. These parameter optimizations enable the dressing to maintain protective function while extending retention time between changes.
3Reliability
If adhesive dressings are used to ensure adherence, then wound coverage is maintained, but they may cause trauma upon removal
Solution Approach 1:
The adhesive layer is designed with locally optimized properties: it provides strong adherence to intact surrounding skin while being formulated to release easily from damaged wound tissue. This local quality differentiation allows the dressing to maintain reliable coverage during wear while minimizing trauma during removal from the wound area.
4Quantity of substance
If absorbent materials are used to manage exudate, then wound moisture is controlled, but the dressings lack adhesive properties and require secondary dressings
Solution Approach 1:
The patent merges the absorbent polyurethane foam matrix with an integrated adhesive layer into a single unified dressing structure. This combination eliminates the need for separate secondary dressings to provide adherence, reducing system complexity while maintaining effective exudate management capabilities.
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 maintains a moist microenvironment, stimulates fibroblast proliferation, controls pain and infections, and ensures easy removal without trauma, promoting rapid, scar-free healing and reducing the need for frequent changes.
Implementation Method 1
an absorbent layer made of non-woven fabric adjacent to film a), said absorbent layer consisting of: i. 60-65% viscose ii. 25-30% polyester iii. 5-15% polypropylene
Implementation Method 2
wherein said matrix (A) is impregnated with a solution of one or more polysaccharides... maintenance of a moist microenvironment at the interface between wound and dressing
Implementation Method 3
a breathable, porous polyethylene film... allow water vapour to cross the skin barrier... thermal insulation of the damaged skin
Data Source
AI summary
Adhesive wound dressing that comprises an absorbent matrix (A) adhering to the central portion of a polyurethane backing (B) having an adhesive layer for the skin, said matrix (A) comprising: a. a breathable and porous polyethylene film at the end designed to come into contact with the wound; b. an absorbent layer made of non-woven fabric adjacent to film a), said absorbent layer consisting of: i. 60-65% viscose ii. 25-30% polyester iii. 5-15% polypropylene; c. a layer of polyethylene inserted between layer b) and a layer d. of hydrophobic polystyrene, the latter being in contact with the central portion of polyurethane backing (B); wherein matrix (A) is impregnated with a solution of one or more polysaccharides or the salts thereof.