Corneal Implant Barrier for Donor Host Tissue Separation
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Solution Overview
Problem
Existing corneal transplantation methods face complications such as graft rejection and infection due to direct contact between donor and host tissues, with full thickness transplants having minimal improvements and lamellar techniques still facing issues like tissue rejection and mechanical weakness.
Innovation Solution
A corneal implant is introduced as a mechanical barrier between donor and host tissues, comprising a planar element, a ring, and radial connecting elements, preventing direct contact and ensuring separation through a pseudochamber formation, thereby minimizing rejection risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct contact between donor and host tissues is maintained in traditional corneal transplantation, then surgical simplicity is preserved, but tissue rejection and infection risks increase
Solution Approach 1:
The patent introduces a corneal implant as an intermediary barrier between the donor cornea and host tissue. This implant physically separates the two tissues, preventing direct contact that would otherwise trigger immune rejection responses. The implant acts as a mediator that allows the transplant to function while blocking the harmful immunological interaction.
Solution Approach 2:
The corneal implant is designed with segmented structural elements including a planar element, a ring, and radial connecting elements. This segmentation allows the implant to be positioned in the space between the donor cornea and host bed, creating distinct zones that separate the tissues while maintaining structural integrity and functionality.
2Reliability
If mechanical barrier implant is introduced to separate donor and host tissues, then rejection risk is minimized, but surgical complexity and device structure increase
Solution Approach 1:
The corneal implant utilizes a thin film structure that provides the necessary mechanical barrier function while remaining manufacturable. The planar element and ring are designed as thin components that can be fabricated using standard manufacturing techniques, balancing the need for a reliable barrier with ease of production.
Solution Approach 2:
The implant design concentrates the barrier function in specific local areas where it is most needed - the planar element directly between the donor cornea and host bed, and the radial connecting elements providing localized structural support. This localized approach to quality distribution optimizes rejection prevention while minimizing overall manufacturing complexity.
3Reliability
If implant structure with multiple elements is used to ensure tissue separation, then separation reliability improves, but device complexity increases
Solution Approach 1:
The patent combines multiple functional elements - the planar barrier element, the positioning ring, and the radial connecting elements - into a single integrated implant structure. This merging ensures that all components work together as a unified system to maintain tissue separation, improving reliability while avoiding the complexities of assembling multiple separate components.
Solution Approach 2:
The implant utilizes the radial dimension by incorporating radial connecting elements that extend from the planar element to the ring. This radial arrangement in a different dimensional orientation provides effective tissue separation and structural stability without requiring additional components in other dimensions, thus managing complexity.
Data Source
AI summary
The present disclosure relates to a corneal implant, particularly the implant is useful for a corneal transplant. The implant avoids direct contact between the patient tissue and a donated cornea. The implant comprises: a disc in the centre of the implant, a ring in a superior plane parallel to the disc, and a radial connecting element between the disc and the ring wherein the implant is configured to perform the function of a mechanical barrier between the donor's cornea and the host descemet endothelium.