Medical Glove Sliding Layer Microcapsule Adhesion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Medical gloves often cause allergic reactions due to components in the inner layer, have insufficient sliding properties, and risk exposure to microorganisms through damaged surfaces, especially when wet.
Innovation Solution
A multi-layer prophylactic article with a sliding layer containing microcapsules of diameters less than 10 μm, which form agglomerates to enhance adhesion and surface roughness, reducing contact with skin, maintaining tactile sensitivity, and providing antibacterial, antiviral, or antiperspirant properties to prevent infections and improve donning ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sliding layer is applied to the inner surface of medical gloves, then sliding properties and donning ease are improved, but allergic reactions to components in the sliding layer occur
Solution Approach 1:
The patent applies microcapsules containing active ingredients (such as antibacterial, antiviral, or hypoallergenic substances) locally within the sliding layer at specific positions where contact with skin occurs. This localized application provides protective functionality precisely where needed, reducing allergic reactions while maintaining sliding properties in the sliding layer material itself.
Solution Approach 2:
The microcapsules act as intermediaries between the sliding layer and the skin. They encapsulate potentially harmful substances and release them only under specific conditions (such as mechanical stress or chemical triggers), providing a mediating layer that prevents direct contact between harmful components and the user's skin, thus reducing allergic reactions while preserving the sliding function.
2Ease of operation
If the sliding layer surface is made smoother, then donning ease is improved, but protection against microorganism penetration through damaged surfaces is reduced
Solution Approach 1:
The patent creates local quality variations by distributing microcapsules throughout the sliding layer at specific positions. The sliding layer itself maintains smooth surface properties for easy donning, while the microcapsules provide localized protective functionality. This spatial differentiation allows the surface to remain smooth for user comfort while the encapsulated substances provide antimicrobial protection where contact with potential contaminants occurs.
Solution Approach 2:
The microcapsules are pre-distributed within the sliding layer before the glove is used. They serve as a preventive measure, ready to release their active ingredients in advance to protect against potential microorganism penetration through damaged surfaces. This beforehand cushioning ensures protection is already in place before any damage occurs, maintaining both smooth surface for donning and reliability for protection.
3Strength
If larger particles are used in the sliding layer, then adhesion and surface roughness are improved, but tactile sensitivity in the fingertips is reduced
Solution Approach 1:
The patent segments the particle system into two distinct size categories: small particles (4-20 microns) distributed throughout the sliding layer for adhesion and protective functionality, and the absence of large particles in the fingertip regions to maintain tactile sensitivity. This segmentation allows different particle sizes to be applied in different zones, optimizing both adhesion properties and tactile precision where needed.
Solution Approach 2:
The patent applies local quality control by concentrating microcapsules in areas requiring adhesion and protection while maintaining particle-free or low-particle zones in the fingertip areas where tactile sensitivity is critical. This spatial differentiation ensures that larger particle effects are localized to non-critical areas, preserving tactile precision in the hands and fingers while achieving adequate adhesion elsewhere.
4Measurement precision
If microcapsules are made smaller, then tactile sensitivity is maintained, but adhesion and surface roughness for donning ease are reduced
Solution Approach 1:
The patent merges multiple functions into the microcapsule system: small particles (4-20 microns) provide both tactile compatibility and adhesion when properly distributed, while the microcapsule structure itself provides the necessary surface texture. The combination of small particle size with microcapsule encapsulation achieves a dual effect: maintaining tactile sensitivity through small size while providing adhesion and protective functionality through the microcapsule structure and distribution pattern.
Solution Approach 2:
The patent optimizes the parameter of particle size to a specific range (4-20 microns) that balances tactile sensitivity and adhesion properties. Additionally, the microcapsule structure introduces new parameters such as capsule wall composition, encapsulated substance type, and spatial distribution density, which collectively enhance adhesion and surface roughness for donning ease without compromising the tactile benefits of small particle size.
Data Source
Figure 1~2
AI summary
The invention describes a multi-layered prophylactic article, in particular a medical glove, comprising at least one elastomeric carrier (1) and at least partially a sliding layer (2), each with an inner (3, 5) and an outer surface (4, 6), wherein the outer surface (4) of the sliding layer (2) faces the inner surface (5) of the carrier layer (1), and microcapsules (7) are contained in the sliding layer (2). At least 90% of the microcapsules (7) are single capsules (8) with a diameter of less than 10 µm.