Functionalized polymer particles of fibers for odor control in wound care
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Solution Overview
Problem
Existing wound dressings for odor control, particularly for chronic wounds, face limitations such as saturation of physical adsorption methods and the undesirability of chemical agents penetrating the wound, which are not suitable for all wound types and may hinder healing.
Innovation Solution
Polymer particles or fibers covalently bonded to N-chloroamines or N,N-dichloroamines, which chemically react with volatile organic compounds (VOCs) to convert them into non-odorous substances, avoiding direct contact with the wound and maintaining wound integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If physical adsorption methods (activated charcoal) are used for odor control, then odor absorption capacity is improved, but saturation occurs and long-term effectiveness deteriorates
Solution Approach 1:
The patent transforms the odor control mechanism from physical adsorption to chemical reaction by changing the functional parameter of the material. Polymer fibers are functionalized with N-chloroamines or N,N-dichloroamines that chemically react with VOCs, converting them into non-odorous substances. This parameter change from physical to chemical interaction eliminates saturation and enables long-term odor control.
2Object-generated harmful factors
If chemical agents (silver, iodine, antibiotics) are used to reduce odor by killing bacteria, then odor control is improved, but the agents may penetrate into the wound and cause harm
Solution Approach 1:
The patent introduces polymer fibers as an intermediary carrier that holds the odor-reactive chemical groups (N-chloroamines or N,N-dichloroamines) on its structure. This intermediary approach allows the chemical groups to react with VOCs in the wound space without the entire agent penetrating into the wound tissue, thus maintaining odor control while protecting wound integrity.
3Object-generated harmful factors
If antimicrobial agents are used to control odor, then bacterial odor is reduced, but applicability to all wound types deteriorates
Solution Approach 1:
The patent creates a universal odor control solution by developing polymer fibers functionalized with N-chloroamines or N,N-dichloroamines that can chemically react with various volatile organic compounds regardless of their source. This multi-functional approach allows the same material to effectively control odor from different wound types (chronic wounds, infected wounds, necrotic tissue) without being limited to bacterial causes only.
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 chemical reaction effectively removes VOCs without saturation, is applicable to various wound types, and avoids harmful leaching into the wound, providing long-term odor control.
Implementation Method 1
the removal of said VOCs is primarily or predominantly by chemical reaction of the VOCs with the chloro-group as immobilized on the polymer
Data Source
AI summary
Described are polymer particles or polymer fibers covalently bonded to N-chloroamines, N,N-dichloroamines, N-chloro sulfonamides or N,N-dichloro sulfonamides, for removing volatile organic compounds (VOCs) from a space above a wound. The removal of said VOCs is believed to be primarily or predominantly by chemical reaction of the VOCs with the N-chloro or the N,N dichloro group as covalently attached to the polymer. In particular, the functionalized polymer particles or polymer fibers are part of a wound dressing and have the functionality to control, in particular reduce, odor emanating from wounds, without interacting with the wound. The described dressings can be advantageously used, in particular, in the treatment of chronic wounds or infected wounds.