Modular Intraocular Lens System for Capsular Bag Adjustment
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Solution Overview
Problem
Current intraocular lens (IOL) systems often require removal and replacement to correct optical errors or reposition the lens, which can be invasive and risk damage to the capsular bag, lacking the ability to adjust the optical axis without manipulating the capsular bag.
Innovation Solution
A modular IOL system comprising a primary component with a flat configuration and a secondary optical component, allowing for adjustment and repositioning within the capsular bag without removal, using support flanges and a center hole for easy access and correction, enabling optical axis alignment without capsular bag manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the IOL is removed and replaced to correct optical errors or reposition the lens, then the optical correction can be adjusted, but the surgical complexity increases and the capsular bag is at risk of damage
Solution Approach 1:
The IOL is divided into two separable components: a primary component that remains implanted in the capsular bag and provides structural support, and a secondary optical component that can be independently removed, replaced, or repositioned. This segmentation allows optical correction adjustments without requiring removal of the entire IOL or manipulation of the capsular bag, thereby reducing surgical complexity while maintaining adaptability.
2Adaptability or versatility
If the IOL is removed and replaced to correct optical errors, then the optical correction can be adjusted, but the risk of capsular bag damage increases
Solution Approach 1:
By segmenting the IOL into a primary component remaining in the capsular bag and a secondary optical component that can be independently manipulated, the design eliminates the need to remove or manipulate the capsular bag for optical corrections. The secondary component can be exchanged through the pupil without capsular bag intervention, thereby reducing damage risk while maintaining optical correction adaptability.
Solution Approach 2:
The primary component acts as an intermediary structure that remains permanently implanted in the capsular bag, providing a stable interface between the capsular bag and the exchangeable secondary optical component. This intermediary allows optical corrections to be made by manipulating only the secondary component, avoiding direct manipulation of the capsular bag and reducing the risk of damage.
3Adaptability or versatility
If the IOL is removed and replaced to reposition the lens, then the optical axis alignment can be corrected, but the surgical complexity increases
Solution Approach 1:
The IOL is segmented into a primary component providing structural support in the capsular bag and a secondary optical component that can be independently repositioned. The secondary component includes features such as alignment marks or asymmetric designs that facilitate optical axis alignment during exchange procedures. This segmentation allows repositioning corrections without requiring complete IOL removal or complex capsular bag manipulation, reducing surgical complexity while maintaining alignment adaptability.
4Ease of operation
If a modular IOL system is implemented allowing component separation, then the optical correction can be adjusted without removing the entire IOL, but the device complexity increases
Solution Approach 1:
The IOL is divided into a primary component with a body part in the capsular bag and a second body part in the posterior chamber that can releasably receive the secondary optical component. This segmentation enables adjustment of optical correction by manipulating only the secondary component, which can be accessed through the pupil without removing the primary component or manipulating the capsular bag. The modular design simplifies adjustment operations while the integration of the two body parts maintains structural coherence.
Solution Approach 2:
The secondary optical component is designed to be received within or associated with the second primary component body part in the posterior chamber. This nested arrangement allows the smaller secondary component to be manipulated and exchanged independently while the larger primary component remains anchored in the capsular bag, facilitating easy adjustment operations without requiring complete system disassembly or complex manipulations.
Data Source
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AI summary
In a first aspect, an intraocular lens system for implantation into a lens capsule of an eye of human or animal body, said lens capsule having a capsulorhexis perimeter, said intraocular lens system comprising: i) an intraocular primary component (10) having a body exhibiting a flat configuration; and ii) an intraocular secondary component (20) having an optical body with an optical axis, wherein the primary component (10) includes a first primary component body part (10a) configured to fit within the lens capsule and a second primary component body part (10b) configured to be positioned outside the lens capsule and in the posterior chamber of the eye and wherein the second primary component body part (10b) is configured to releasably receive the secondary component (20) in the posterior chamber of the eye to provide optical correction, such that the secondary component (20) is movable relative to the primary component (10). Herewith it is possible after implanting the modular IOL to adapt the orientation of the secondary component within the capsular bag and as such to adapt the optical performance of the modular IOL without the need of removal and replacement nor of manipulation of the capsular bag.