Interface Dressing Composition Reducing Latex Glove Adhesion
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Solution Overview
Problem
Current interface dressings have a strong affinity towards latex surgical gloves, making them difficult to handle and apply correctly, as they tend to stick to the gloves, which complicates their use and removal, especially for self-supporting dressings without frames.
Innovation Solution
A composition based on triblock copolymers of the ABA type with specific viscosity ranges and proportions, combined with plasticizers and petroleum jelly, is developed to create a hydrophobic matrix that reduces the affinity towards latex gloves, ensuring easy handling and manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hydrophobic elastomeric matrix based on triblock copolymers is used to promote wound healing, then the proliferation of fibroblasts is enhanced, but the dressing develops strong affinity towards latex surgical gloves making it difficult to handle
Solution Approach 1:
The patent modifies the chemical composition parameters of the elastomeric matrix by incorporating specific compounds (petroleum jelly, silicones, oils) that change the surface properties and reduce affinity towards latex gloves, while maintaining the core triblock copolymer structure responsible for wound healing benefits
Solution Approach 2:
The patent creates a composite elastomeric matrix that combines triblock copolymers with additional compounds including petroleum jelly, silicones, and oils. This composite structure maintains the biocompatibility and fibroblast-proliferating properties of the original matrix while the added compounds reduce adhesion to latex gloves
2Adaptability or versatility
If the dressing is made self-supporting without a frame to improve conformability, then the elasticity is enhanced, but the adhesion to latex gloves increases making manipulation difficult
Solution Approach 1:
The patent adjusts the compositional parameters of the self-supporting dressing by incorporating specific ratios of petroleum jelly, silicones, and oils that modify surface adhesion properties, allowing the flexible, frameless structure to be manipulated easily with latex gloves without excessive adhesion
3Reliability
If active compounds are incorporated into the composition to enhance wound treatment, then the healing action is improved, but the complexity of composition development increases due to interactions between compounds
Solution Approach 1:
The patent uses petroleum jelly, silicones, and oils as intermediary substances that facilitate the incorporation of active compounds into the elastomeric matrix. These intermediaries help distribute and stabilize active ingredients while minimizing unwanted interactions between different compounds in the formulation
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 new composition effectively prevents adhesion to latex gloves, allowing for easy handling and application of interface dressings with both frame and self-supporting designs, maintaining the desired properties of cohesion and elasticity while promoting wound healing.
Implementation Method 1
a hydrophobic elastomeric matrix based on triblock copolymers of the ABA type (styrene-saturated olefin-styrene)
Implementation Method 2
This gel is formed of a composition consisting of a hydrophobic elastomeric matrix... which gives it remarkable properties with regard to promoting the healing process and in particular the proliferation of fibroblasts
Implementation Method 3
a hydrophobic elastomeric matrix based on triblock copolymers of the ABA type... which has a low affinity towards latex surgical gloves
Data Source
Figure 1~8A
Figure 9~13
AI summary
The present invention relates to a composition which has a low affinity with respect to latex gloves, comprising a hydrophobic matrix, characterized in that said hydrophobic matrix comprises: - for 100 parts by weight of a mixture P of 2 styrene-saturated olefin-styrene triblock copolymers, a first which has a viscosity of between 0.01 and 1 Pa.s as measured in a 5% (weight/weight) solution in toluene and a second which has a viscosity of between 0.01 and 0.5 Pa.s measured in a 15% (weight/weight) solution in toluene; - from 300-1000 parts by weight of a plasticizer H, preferably a plasticizing oil; and from 90 to 600 parts by weight of petroleum jelly V; it also being specified that: - the total amount, represented by P+H+V, of the mixture of elastomers, of plasticizer and of petroleum jelly is between 490 and 1700 parts by weight; - the ratio between the total amount of the mixture of elastomers, of the plasticizer and of the petroleum jelly and the amount of petroleum jelly, represented by P+H+V/V, is less than 11; and said mixture of 2 copolymers comprises at least 20% by weight of the first copolymer. The present invention also relates to an interface dressing with reinforcement, with a support or which is self-supported, which dressing comprises such a composition.