Modular Intraocular Lens Iris Engagement
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Solution Overview
Problem
Current intraocular lens (IOL) systems face challenges in modifying or correcting optical results post-cataract surgery without needing to remove or manipulate the capsular bag, which risks damage and complications, especially when engaging the ciliary sulcus.
Innovation Solution
A modular IOL system comprising a primary and secondary component, where the secondary component can be attached to the primary component within the capsular bag without manipulating the bag, allowing for adjustment or exchange of the secondary component to correct optical errors without disturbing the capsular bag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secondary lens is placed in the ciliary sulcus to avoid capsular bag manipulation, then the risk of capsular damage is reduced, but the risk of ciliary sulcus injury and associated complications increases
Solution Approach 1:
The patent introduces a secondary lens with haptics that engage the iris tissue as an intermediary structure, rather than placing the lens directly in the ciliary sulcus or manipulating the capsular bag. The iris-engaging haptics serve as a mediator that provides stable lens positioning while avoiding the harmful effects of ciliary sulcus engagement and capsular bag manipulation.
2Adaptability or versatility
If the capsular bag is manipulated to remove or exchange an IOL, then optical corrections can be adjusted, but the risk of capsular rupture and tissue damage increases
Solution Approach 1:
The patent divides the IOL system into two separate components: a primary lens that remains permanently implanted in the capsular bag, and a secondary lens that can be independently exchanged. This segmentation allows the secondary lens to be removed and replaced through the same incision without requiring manipulation of the capsular bag or removal of the primary lens, thereby enabling optical correction adjustments while minimizing capsular damage risk.
3Stability of the object's composition
If a secondary lens is designed to engage the ciliary sulcus, then stable positioning is achieved, but complications such as bleeding, inflammation, and hyphema may occur
Solution Approach 1:
The patent uses iris tissue as an intermediary engagement point for the secondary lens haptics, replacing direct ciliary sulcus engagement. The iris serves as a mediator that provides sufficient mechanical stability for lens positioning while being less vascularized and less prone to causing bleeding, inflammation, and hyphema compared to ciliary sulcus tissue.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~4D
AI summary
A base (55) for a modular intraocular lens (290), the base (55) being suitable for receiving a lens (65) comprising at least one tab portion (295, 296) to form a modular intraocular lens (290).