Biocompatible Polymeric Wound Matrix with Silver Antimicrobial Network
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Solution Overview
Problem
Current wound healing technologies face limitations in effectively promoting wound healing due to inadequate antimicrobial activity, toxicity concerns with broad-spectrum antibiotics, and complications from complex molecules that can alter the wound environment, leading to compromised healing and immune responses.
Innovation Solution
A composition comprising a biologically active agent covalently attached to a polymerizing molecule that undergoes free radical polymerization, with silver as an antimicrobial initiator, forming a biocompatible wound healing matrix that retains antimicrobial properties for an extended period without toxicity to mammalian cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If broad-spectrum antibiotics are used to provide antimicrobial activity, then infection control is improved, but toxicity and antibiotic resistance concerns worsen
Solution Approach 1:
The patent extracts and eliminates harmful broad-spectrum antibiotics from the wound healing matrix, replacing them with silver ions that provide antimicrobial activity without the associated toxicity and resistance problems. The silver ions are incorporated into the polymeric network to provide sustained antimicrobial protection.
Solution Approach 2:
The patent changes the antimicrobial parameter from antibiotic-based to silver ion-based, fundamentally altering the chemical nature of the antimicrobial agent. This parameter change maintains effective antimicrobial activity while eliminating the harmful effects of antibiotic resistance and toxicity.
2Reliability
If complex molecules are added to enhance wound healing, then healing promotion is improved, but diffusion and elution calculations become confounding and immune responses worsen
Solution Approach 1:
The patent removes complex molecules from the wound healing composition, relying instead on the inherent bioactivity of the polymeric network structure itself and simple silver ions for antimicrobial activity. This extraction of complexity simplifies diffusion and elution calculations while maintaining healing promotion through the matrix structure.
Solution Approach 2:
The patent creates a homogeneous polymeric network structure that provides wound healing benefits through its physical and chemical properties rather than through complex molecular additives. The homogeneous structure simplifies the system while maintaining effectiveness.
3Reliability
If antimicrobial agents are incorporated into the matrix, then infection control is improved, but the agents may be washed out by tissue fluid flows or neutralized by serum factors and enzymatic activities
Solution Approach 1:
The patent merges the silver ions with the polymeric network structure, combining the antimicrobial agent with the matrix framework. This integration prevents the silver ions from being washed out by tissue fluid flows or neutralized by serum factors, as they are bound within the crosslinked network structure.
Solution Approach 2:
The patent creates a composite material where silver ions are incorporated into a polymeric network matrix. This composite structure provides sustained antimicrobial activity by preventing leaching while maintaining the therapeutic concentration of silver ions at the wound site.
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 solution provides a biocompatible, self-curing wound healing matrix that effectively limits infections, supports cell viability and migration, and maintains antimicrobial activity for several days, promoting efficient wound healing while being non-toxic and non-immunogenic.
Implementation Method 1
This action derives from the binding of the positive silver ions with the negatively charged microbial proteins preventing their replication
Implementation Method 2
via attachment to sulfhydryl groups, preventing their respiration
Implementation Method 3
covalently attached to a polymerizing molecule that is adapted to undergo a free radical polymerization
Data Source
AI summary
A composition includes at least one biologically active agent covalently attached to a first polymerizing molecule that is adapted to undergo a free radical polymerization. The first polymerizing molecule retains the ability to undergo free radical polymerization after attachment of the bioactive agent thereto. The first polymerizing molecule is preferably biocompatible. The polymerizing molecule can, for example. be dihydroxyphenyl-L-alanine (DOPA) or tyrosine. The composition can also include a second component synthesized by reacting at least one core molecule having a plurality of reactive hydrogen groups with at least one multi-isocyanate functional molecule to create a conjugate including terminal isocyanate groups. The conjugate molecule is reacted with a second polymerizing molecule that is adapted to undergo a free radical polymerization. The second polymerizing molecule includes a reactive hydrogen to react with the isocyanate groups of the conjugate. The second polymerizing molecule retains the ability to undergo the free radical polymerization after reaction with the conjugate. In several embodiments, the first polymerizing molecule and the second polymerizing molecule are the same and dihydroxyphenyl-L-alanine (DOPA) or tyrosine.