Tarsus Eyelid Patch Curvature Adhesion
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Solution Overview
Problem
Existing methods for holding an eyelid closed after injury or surgery are uncomfortable and ineffective, such as Tarsorrhaphy, rigid eye splints, and standard cloth eye patches, which do not provide adequate healing and comfort.
Innovation Solution
A non-rigid, perforated mesh device with a 2-ply material, featuring a convex and concave curvature design that adheres to the superior tarsus, providing strength and stiffness to hold the eyelid closed while allowing medication insertion through the canthus, made from hypoallergenic materials like mesh fabric or latex-free tape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid eye splint is used to hold the eyelid closed, then the eyelid can be kept closed effectively, but the device becomes uncomfortable for the user
Solution Approach 1:
The patent replaces the rigid eye splint with a flexible tarsus eyelid patch made of thin film material that conforms to the contours of the eye and surrounding area. This flexible patch maintains the eyelid closed position through adhesion and conformal fit rather than rigid constraint, significantly improving user comfort while maintaining effectiveness.
Solution Approach 2:
The patch is designed with specific curvature to match the spherical contour of the eye and the surrounding facial features. This curvature allows the patch to wrap around the eye area conformally, distributing pressure evenly and preventing the discomfort associated with flat rigid splints while maintaining secure adhesion.
2Reliability
If Tarsorrhaphy is performed to hold the eyelid closed, then the eye can be kept closed during healing, but the procedure becomes invasive and uncomfortable
Solution Approach 1:
The patent employs a disposable adhesive patch that can be applied and removed without surgical intervention. This non-invasive approach eliminates the harmful factors of Tarsorrhaphy (surgical sewing, pain, recovery time) while providing equivalent functionality for temporary eyelid closure during healing periods.
Solution Approach 2:
The patent replaces the mechanical surgical procedure of Tarsorrhaphy (sewing eyelids together) with an adhesive bonding system. The adhesive patch creates a mechanical bond between the eyelid and surrounding skin through adhesion rather than suture, eliminating the need for invasive surgical intervention while maintaining the closed position.
3Area of stationary object
If a standard cloth eye patch is used, then the eye can be covered, but the patch smothers the eye and is not effective for healing
Solution Approach 1:
The patent incorporates porous or perforated regions in the patch material that allow oxygen and moisture vapor transmission. This prevents the smothering effect of solid cloth patches while maintaining the protective coverage function, creating a microenvironment that supports healing by allowing gas exchange and preventing maceration.
Solution Approach 2:
The patch is designed with differentiated regions: adhesive areas for secure attachment, porous areas for breathability, and potentially medicated zones for targeted treatment. This local quality variation allows different portions of the patch to perform different functions, providing both coverage and healing support simultaneously.
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 device comfortably and painlessly holds the eyelid closed, promoting healing by maintaining the eyelid in a closed position while allowing for medication access, suitable for various eye conditions and surgeries, including dry eye, lazy eye, and post-LASIK procedures, with ease of application and adaptability to different facial features.
Implementation Method 1
the adhesive surface of the superior edge is configured to attach to the region below an eyebrow on a superior tarsus
Implementation Method 2
when the non-rigid device forms the concave curve and the convex curve when the superior tarsus is in the closed position, the multiple curvatures adds strength and stiffness to hold the superior tarsus in the closed position
Implementation Method 3
the perforated mesh device is a non-rigid device
Data Source
AI summary
A Tarsus Eyelid Patch and method to hold a superior tarsus in a closed position to heal or treat defects on the eye surface is presented. A perforated mesh device includes a medial edge, a lateral edge, a superior edge, an inferior edge, and an adhesive surface, wherein the perforated mesh device is a non-rigid device. The adhesive surface of the superior edge is configured to attach to a region below an eyebrow and on the superior tarsus forming a convex region and further configured to attach to and conform to the superior tarsus when the superior tarsus is in the closed position forming a concave region when the adhesive surface of the inferior edge is to attached to a lower portion of the superior tarsus when the superior tarsus is in the closed position.