Elastic Iris-Lens Diaphragm Supports for Small-Incision Retention
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Solution Overview
Problem
Existing artificial iris-lens diaphragms suffer from insufficient rigidity of support elements, leading to post-operative displacement and difficulty in implantation through small incisions.
Innovation Solution
The iris-lens diaphragm is designed with support elements that exceed the thickness of the colored ring, made of elastic material, allowing for one-point contact and bending in the plane of the colored ring, with a flange to reduce stress on the ring, 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 incisions deteriorates
Solution Approach 1:
The support elements are designed with non-uniform thickness, being thicker at the distal end (free end) and thinner near the colored ring. This local variation in thickness provides the necessary rigidity at the support end for secure retention while maintaining flexibility near the ring for easy implantation through small incisions.
Solution Approach 2:
The support elements are made of elastic material that can dynamically adapt its rigidity based on the applied force. During implantation, the elements flex to pass through small incisions, then regain their rigid form to provide secure retention in the ciliary sulcus, achieving both ease of operation and structural strength.
2Strength
If the material toughness is increased to improve support element rigidity, then the retention security is improved, but the ease of implantation through small incisions deteriorates
Solution Approach 1:
The support elements are designed with non-uniform thickness, being thicker at the distal end (free end) and thinner near the colored ring. This local variation in thickness provides the necessary rigidity at the support end for secure retention while maintaining flexibility near the ring for easy implantation through small incisions.
Solution Approach 2:
The support elements are made of elastic material that can dynamically adapt its rigidity based on the applied force. During implantation, the elements flex to pass through small incisions, then regain their rigid form to provide secure retention in the ciliary sulcus, achieving both ease of operation and structural strength.
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 design provides secure retention and positioning of the iris-lens diaphragm in the ciliary sulcus, reducing the risk of post-operative displacement and enabling implantation through small incisions without causing eye injury.
Implementation Method 1
support elements for one-point contact that are capable of bending in the plane of the colored ring, wherein the thickness of the support elements exceeds the thickness of the colored ring
Data Source
Figure 1~2
Figure 3~4
AI summary
There is discloses an iris-lens diaphragm made of elastic material in the form of a colored ring. The irisOlens diaphragm comprises peripheral arc-shaped and open-ended support elements for one-point contact that are capable of bending in the plane of the colored ring, wherein a thickness of support elements exceeds a thickness of the colored ring.