Self-Adhering Eye Patch With Segmented Adhesive
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Solution Overview
Problem
Existing eye patches for treating amblyopia lack effective self-adhering properties, light occlusion, and comfort, making them cumbersome and difficult to use on both children and adults.
Innovation Solution
A self-adhering occlusion eye patch with a base layer of woven material featuring a FDA-compliant graphical design, a horizontal striped adhesive layer, a black cotton layer for light occlusion, and a white cotton layer for breathability, designed in a three-sided diamond or rounded triangle shape for secure and easy application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional eye patches are used, then light occlusion is provided, but adhesion is poor and removal is difficult
Solution Approach 1:
The adhesive layer is segmented into multiple horizontal stripes rather than being a continuous layer. This segmentation allows the patch to adhere securely in multiple zones while maintaining gaps that facilitate easy removal and reduce skin irritation. The striped adhesive pattern creates multiple attachment points without requiring complete coverage, resolving the contradiction between strong adhesion and easy removal.
Solution Approach 2:
Different regions of the patch have different properties: the adhesive layer has localized adhesive zones with varying strip densities, the black cotton layer provides light occlusion only where needed, and the white cotton layer provides breathability in specific areas. This local differentiation allows each zone to optimize its function without compromising overall performance.
2Reliability
If adhesive coverage is increased for better adhesion, then secure attachment is achieved, but skin irritation and residue increase
Solution Approach 1:
The adhesive is divided into horizontal stripes with gaps between them, reducing the total adhesive surface area in contact with skin. This segmentation maintains secure attachment through multiple distributed adhesive zones while minimizing the harmful effects of excessive adhesive coverage, such as skin irritation and difficult removal residue.
Solution Approach 2:
The white cotton layer acts as an intermediary between the adhesive and the skin in certain regions, providing a breathable barrier that reduces direct skin-adhesive contact. This intermediary layer mitigates skin irritation while allowing the adhesive to maintain secure attachment to the patch structure.
3Reliability
If patch thickness is increased for better light occlusion, then light blocking is improved, but comfort and wearability decrease
Solution Approach 1:
The black cotton layer is positioned only where light occlusion is critical, rather than uniformly thickening the entire patch. This localized placement provides effective light blocking in key areas while maintaining overall patch thinness and comfort. The white cotton layer complements this by providing breathability in regions where light occlusion is less critical.
Solution Approach 2:
The patch uses a composite structure combining black cotton (for light occlusion) and white cotton (for breathability and comfort) layers. This composite material approach achieves effective light blocking through the black layer's optical properties rather than through increased thickness, maintaining comfort while ensuring reliable occlusion.
4Reliability
If adhesive layer is made continuous for strong bonding, then secure attachment is achieved, but easy removal is compromised
Solution Approach 1:
The adhesive layer is divided into horizontal stripes with intentional gaps between them. This segmentation provides multiple discrete bonding zones that collectively achieve secure attachment, while the gaps create natural separation points that facilitate easy removal. The striped pattern resolves the contradiction by distributing bonding strength across multiple zones rather than requiring continuous adhesive coverage.
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 eye patch provides secure adhesion, easy removal, excellent light occlusion, improved comfort, and breathability, optimizing fit and usability for both children and adults with reduced adhesive marks and heat dissipation.
Implementation Method 1
an adhesive layer applied to the entire backside of the base layer such that the adhesive is applied in a horizontal striped arrangement... creates a self-adhering adhesive surface for the occlusion eye patch that allows the eye patch to be firmly and securely attached to the eye socket area around the eye but also allows the occlusion eye patch to be easily removed
Implementation Method 2
the black layer provides excellent light occlusion properties for the occlusion eye patch
Data Source
AI summary
A self-adhering occlusion eye patch, wherein the outer non-woven fabric layer is constructed of a spunbond/meltblown/spunbond non-woven material, an inner black padding layer, wherein the inner black padding layer is constructed of a blend of a spun bound non-woven material and cotton wadding such that the inner black padding layer is attached to the outer non-woven fabric layer, and an inner white non-woven layer having a first side and a second side, wherein the inner white non-woven is constructed of a spun bound non-woven material such that the first side of the inner white non-woven layer is attached to the second side of the inner black padding layer and the second side of the inner white non-woven layer is to be located against an eye of a user.