Artificial Iris With Closed Supports for Small-Incision Implantation
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Solution Overview
Problem
Existing artificial irises lack sufficient rigidity in their support elements, leading to post-operative displacement and difficulty in implantation through small incisions, as seen in prior art solutions like RU 2526245.
Innovation Solution
The artificial iris is designed with closed peripheral support elements made of a more resilient material than the colored ring, featuring a thickness exceeding 0.6 mm, and optionally includes a flange, ensuring secure retention and ease of implantation through small incisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the thickness of support elements is increased to improve rigidity, then the rigidity and retention security are improved, but the ease of implantation through small incision is worsened
Solution Approach 1:
The patent applies parameter changes by precisely controlling the thickness parameter of support elements to exceed the thickness of the colored ring, and selecting appropriate material resilience parameters. This creates an optimal balance where support elements have sufficient rigidity for secure retention while remaining thin enough to pass through small incisions during implantation.
Solution Approach 2:
The patent uses composite material structure by combining support elements made of more resilient material than the colored ring. This material differentiation allows support elements to exhibit higher rigidity when needed for retention while the overall implant structure remains flexible enough for minimally invasive implantation through small incisions.
2Reliability
If the material resilience of support elements is increased to improve retention, then the retention security is improved, but the flexibility for implantation is worsened
Solution Approach 1:
The patent applies local quality by making different parts of the artificial iris with different material properties. Specifically, support elements are made of more resilient material compared to the colored ring, creating localized high-resilience zones that provide secure retention while other parts maintain appropriate flexibility for implantation and adaptation.
Solution Approach 2:
The patent changes material resilience parameters selectively in different components. The support elements use material with higher resilience to ensure reliable retention, while the overall thickness and geometry parameters are optimized to maintain sufficient flexibility for surgical implantation procedures.
3Stability of the object's composition
If the thickness of support elements is increased to prevent displacement, then the retention stability is improved, but the risk of surgical injury is worsened
Solution Approach 1:
The patent optimizes the thickness parameter of support elements to exceed the thickness of the colored ring but remains within safe limits for surgical implantation. This parameter optimization ensures that support elements provide sufficient stability to prevent post-operative displacement while maintaining thin enough dimensions to minimize surgical injury risk during insertion.
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 solution provides secure retention and self-centering of the artificial iris in the ciliary sulcus, reducing the risk of post-operative displacement and facilitating implantation without causing surgical injury.
Implementation Method 1
Material resilience of support elements may exceed material resilience of the colored ring
Data Source
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AI summary
The invention relates to the field of medicine, more particularly to ophthalmology, and is intended for reconstructive surgery for pathology of the iris or combined pathology of the iris and lens. The technical result is aimed at providing support elements which have the necessary rigidity and can be firmly fixed, while preserving the ease of implantation of an artificial iris. The technical result is achieved in that the proposed artificial iris is made of an elastic material in the form of a colored ring comprising peripheral support elements capable of bending in the plane of the colored ring, wherein the support elements are closed and the thickness thereof exceeds the thickness of the colored ring.