Antimicrobial Pressure-Sensitive Adhesive for Surgical Drape Attachment
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Solution Overview
Problem
Current antimicrobial adhesives face challenges in maintaining adhesive strength while effectively delivering antimicrobial agents, often leading to premature failure and increased microbial exposure, particularly in surgical settings where surgical drapes may drift, compromising infection control.
Innovation Solution
The development of an antimicrobial composition comprising a polymerizable mixture of high and low Tg monomers, an organic acid chelator, and a water-soluble plasticizer, which forms a water-insoluble polymer upon polymerization, creating a pressure-sensitive adhesive that balances antimicrobial and adhesive properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antimicrobial compositions are incorporated within adhesive bandages, then antimicrobial protection is provided, but adhesive properties deteriorate leading to premature failure
Solution Approach 1:
The patent modifies the chemical composition parameters of the adhesive by incorporating specific antimicrobial agents (iodine, iodophors, halogens, quaternary ammonium compounds, biguanides, phenols, alcohols, peroxides, or organic acids) at controlled concentrations. This allows the adhesive to maintain its bonding properties while providing antimicrobial protection, resolving the contradiction between adhesive strength and microbial protection.
Solution Approach 2:
The patent creates a composite adhesive material that combines the base adhesive polymer with antimicrobial agents. This composite structure allows both functions (adhesion and antimicrobial activity) to coexist, preventing the adhesive failure that occurs when antimicrobials are simply mixed into conventional adhesives.
2Object-affected harmful factors
If surgical drapes use iodine-impregnated adhesives, then antimicrobial protection is achieved, but the drape becomes detached and antimicrobial effectiveness is lost
Solution Approach 1:
The patent adjusts the adhesive composition parameters to include antimicrobial agents that do not compromise bonding strength. By carefully selecting the type and concentration of antimicrobial (e.g., iodine, iodophors, quaternary ammonium compounds), the drape maintains secure attachment while providing continuous antimicrobial protection, preventing both detachment and microbial contamination.
Solution Approach 2:
The surgical drape adhesive is formulated as a composite material combining the adhesive matrix with embedded antimicrobial agents. This composite structure ensures the antimicrobial protection is integrated into the adhesive itself, so even if the drape shifts, the protective function remains active at the interface.
3Object-affected harmful factors
If adhesive bandages are changed frequently due to failure, then microbial exposure is reduced, but treatment cost and patient discomfort increase
Solution Approach 1:
The patent optimizes the adhesive formulation parameters to include antimicrobial agents that provide long-lasting protection without affecting adhesive performance. This allows the bandage to maintain both its bonding strength and antimicrobial efficacy over extended periods, reducing the frequency of changes needed and thereby decreasing patient discomfort and healthcare costs.
Solution Approach 2:
The antimicrobial agents are incorporated into the adhesive in a way that ensures continuous protection throughout the wear period. The adhesive maintains both its bonding function and antimicrobial activity simultaneously, providing uninterrupted protection and eliminating gaps that would occur with frequent bandage changes.
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 stable and effective antimicrobial adhesive that maintains adhesive strength while ensuring the antimicrobial agent's availability, reducing microbial exposure and infection risks by preventing biofilm formation and microorganism growth on surfaces.
Implementation Method 1
Upon polymerization, the polymerizable mixture forms a water-insoluble polymer composition comprising a copolymer derived from the at least one high Tg monomer and the at least one low Tg monomer
Implementation Method 2
a water-soluble plasticizer capable of solubilizing the organic acid chelator, or salt thereof, in an amount of at least about 100 g chelator per L of plasticizer at a temperature from about 20° C. to about 23° C.
Implementation Method 3
irradiating the antimicrobial composition and photoinitiator with electromagnetic radiation at a wavelength of about 280 nm to about 500 nm for a period to at least partially cure the antimicrobial composition
Data Source
AI summary
Antimicrobial compositions and articles are disclosed, as well as method for preparing antimicrobial compositions. Also disclosed are method for using antimicrobial compositions and articles for preventing the formation or growth of biofilms, disrupting biofilms, reducing microorganism counts, and treating infections.