Adhesive Wound Closure Device Polymerization Control
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Solution Overview
Problem
Current wound closure methods, such as sutures, staples, and adhesive bandages, face challenges including trauma to the wound, cosmetic issues, limited application range, and inconsistent polymerization times due to reliance on external initiators or moisture for polymerization.
Innovation Solution
A flexible material impregnated with a polymerization initiator and a polymerizable adhesive composition that rapidly and uniformly polymerizes, providing a durable microbial barrier and improved wound closure with extended working time, eliminating the need for external initiators and reducing trauma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If sutures are used for wound closure, then adequate wound support is provided, but additional trauma to the wound occurs and cosmetic results are unattractive
Solution Approach 1:
The patent replaces the mechanical penetration method of sutures with a chemical bonding mechanism. Adhesive compositions are applied to the wound surface to bond tissue edges together without mechanical penetration, eliminating the trauma caused by needle insertion while maintaining wound support strength.
Solution Approach 2:
The patent changes the physical and chemical parameters of the bonding mechanism from mechanical (sutures) to chemical (adhesives). By controlling the polymerization process and adhesive formulation, the bond strength is optimized to provide adequate wound support without the harmful mechanical effects of traditional suturing.
2Strength
If surgical staples are used for wound closure, then wound support is provided, but pain and trauma are increased and cosmetic appearance deteriorates
Solution Approach 1:
The patent replaces the mechanical clamping action of staples with a chemical adhesive bonding system. The adhesive composition forms a polymerized bond between tissue edges that provides equivalent support without the mechanical compression and pain associated with staple insertion and removal.
3Ease of operation
If conventional adhesive bandages are used for wound closure, then superficial wounds are closed, but holding power is lost quickly in the presence of moisture
Solution Approach 1:
The patent fundamentally changes the chemical parameters of the adhesive system by using polymerizable adhesive compositions that undergo controlled polymerization. This transformation from simple contact adhesives to polymer-based adhesives provides moisture-resistant bonding that maintains holding power in wet wound environments while preserving ease of application.
Solution Approach 2:
The patent employs composite material systems combining polymerizable monomers, oligomers, and initiators formulated specifically for wound closure. This composite adhesive system provides both ease of application and reliable, moisture-resistant bonding that conventional single-component adhesives cannot achieve.
4Productivity
If polymerizable adhesive compositions are used with external initiators, then wound closure is achieved, but polymerization times are inconsistent
Solution Approach 1:
The patent merges the adhesive composition and initiator into a single integrated system. The initiator is incorporated directly into the adhesive formulation, ensuring consistent mixing and uniform distribution throughout the applied material. This eliminates the variability caused by external initiator application and achieves reliable, consistent polymerization times.
Solution Approach 2:
The patent performs preliminary preparation by pre-mixing the initiator with the adhesive composition before application. This preliminary action ensures that the initiator is uniformly distributed throughout the adhesive, leading to consistent and predictable polymerization rates across all applications without requiring external initiator addition at the time of use.
5Speed
If monomeric adhesives are applied directly to wounds, then rapid polymerization occurs, but working time is limited
Solution Approach 1:
The patent creates a dynamic system where the polymerization process can be controlled and adjusted. By incorporating the initiator into the adhesive formulation, the polymerization rate can be optimized to provide adequate working time for application and positioning, followed by rapid curing once applied to the wound. This dynamic control resolves the contradiction between rapid polymerization and sufficient working time.
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 enables quick and consistent wound closure with improved cosmesis, reduced pain during removal, and increased patient satisfaction by providing a strong, durable, and long-lasting microbial barrier.
Implementation Method 1
a polymerizable adhesive composition that rapidly and uniformly polymerizes
Data Source
AI summary
An article, such as a tissue bonding article, includes a flexible material, a polymerization initiator or rate modifier disposed in or on the flexible material, and a polymerizable adhesive composition permeated throughout at least a portion of the flexible material, where the polymerization initiator or rate modifier is a polymerization initiator or rate modifier for the polymerizable adhesive composition.