Modular Intraocular Lens with Interlocking Secondary Component
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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 to correct refractive errors or astigmatism 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 increases
Solution Approach 1:
The patent introduces a secondary lens with a specific design that acts as an intermediary solution. The lens is positioned in the ciliary sulcus but features a reduced diameter and specific haptic configuration that minimizes contact with and injury risk to the ciliary sulcus tissue, while still achieving the optical correction goal without manipulating the capsular bag.
Solution Approach 2:
The patent modifies key parameters of the secondary lens including its diameter, haptic design, and positioning characteristics. By changing these parameters, the lens achieves a balance between providing effective optical correction and minimizing harm to the ciliary sulcus, thereby resolving the contradiction between avoiding capsular manipulation and preventing ciliary injury.
2Adaptability or versatility
If the capsular bag is manipulated to remove or exchange an IOL, then optical correction can be adjusted, but the risk of capsular rupture and tissue damage increases
Solution Approach 1:
The patent divides the IOL system into two independent components: a primary lens that remains in the capsular bag and provides stable support, and a secondary lens that can be independently positioned in the ciliary sulcus and exchanged without manipulating the capsular bag. This segmentation allows optical correction adjustment while preserving capsular integrity.
Solution Approach 2:
The secondary lens serves as an intermediary element that enables optical correction adjustments without direct manipulation of the capsular bag. By positioning the secondary lens in the ciliary sulcus and using it to provide additional refractive power or correction, the system achieves adaptability while avoiding the harmful effects of capsular manipulation.
3Ease of operation
If a secondary lens with haptics engaging the ciliary sulcus is used, then capsular bag manipulation is avoided, but complications such as bleeding and inflammation increase
Solution Approach 1:
The patent modifies the haptic design parameters of the secondary lens, including their size, shape, and engagement characteristics with the ciliary sulcus. By optimizing these parameters, the lens achieves ease of implantation and positioning while minimizing tissue trauma, thereby reducing complications such as bleeding and inflammation.
Solution Approach 2:
The patent applies local quality by designing the haptics with specific characteristics at the point of contact with the ciliary sulcus. The haptics are engineered to have reduced profile and optimized geometry at the engagement zone, minimizing local tissue damage while maintaining the overall functionality of the lens system.
Data Source
AI summary
A modular IOL system including intraocular primary and secondary components, which, when combined, form an intraocular optical correction device, wherein the secondary component is placed on the primary component within the perimeter of the capsulorhexis, thus avoiding the need to touch or otherwise manipulate the capsular bag. The secondary component may be manipulated, removed, and/or exchanged for a different secondary component for correction or modification of the optical result, on an intra-operative or post-operative basis, without the need to remove the primary component and without the need to manipulate the capsular bag. The primary component may have haptics extending therefrom for centration in the capsular bag, and the secondary component may exclude haptics, relying instead on attachment to the primary component for stability. Such attachment may include actuatable interlocking members.