Accommodating Intraocular Lens with Rotating Stanchions
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Solution Overview
Problem
Current intraocular lenses (IOLs) fail to replicate the natural lens's ability to dynamically focus on both near and distant objects, leading to limitations in visual acuity and comfort due to fixed focal points and associated visual aberrations.
Innovation Solution
An intraocular optic assembly with interconnected stanchions that rotate and fold to accommodate ciliary muscle contraction, allowing the lens to adjust its position and shape within the eye, mimicking the natural lens's accommodation mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a fixed focal point IOL is used, then manufacturing and implantation are simplified, but visual acuity and comfort deteriorate due to inability to focus on near and distant objects
Solution Approach 1:
The patent applies the dynamics principle by creating an IOL system that transitions from a static fixed focal point to a dynamic variable focal point. The accommodating IOL with haptics that interact with the ciliary muscle enables the lens to change its focal position dynamically, allowing clear vision at multiple distances. This dynamic adjustment mechanism resolves the contradiction by maintaining manufacturing feasibility while achieving superior visual acuity through functional complexity.
Solution Approach 2:
The patent employs parameter changes by modifying the optical parameters of the IOL system. The accommodating IOL changes its focal length and optical power parameters in response to ciliary muscle contraction and relaxation. This parameter variation enables the lens to adapt to different viewing distances, resolving the contradiction between manufacturing simplicity and visual performance by introducing controllable optical parameter changes.
2Manufacturing precision
If an accommodating IOL with dynamic focus is implemented, then visual acuity and comfort improve, but device complexity increases due to additional structural components
Solution Approach 1:
The patent applies segmentation by dividing the IOL system into distinct functional components: the optic portion for light transmission and the haptic portions for mechanical interaction with the ciliary muscle. This segmentation allows each component to be optimized independently - the optic for visual quality and the haptics for mechanical accommodation - thereby managing overall device complexity while achieving superior visual acuity.
Solution Approach 2:
The patent employs universality by designing the haptic portions to serve multiple functions: providing mechanical support, enabling ciliary muscle interaction for accommodation, and maintaining optical alignment. This multi-functionality reduces the need for separate components, managing device complexity while achieving dynamic focus capability for improved visual acuity at multiple distances.
3Stability of the object's composition
If the IOL is made rigid to maintain shape, then structural stability improves, but adaptability to ciliary muscle contraction deteriorates
Solution Approach 1:
The patent applies local quality by differentiating the mechanical properties of different IOL components. The optic portion maintains rigidity for stable shape and optical performance, while the haptic portions incorporate flexibility to accommodate ciliary muscle contraction. This localized variation in mechanical quality allows the lens to maintain overall shape stability while adapting to accommodation demands through the flexible haptic regions.
Solution Approach 2:
The patent employs dynamics by creating a system where the haptic portions can dynamically deform in response to ciliary muscle contraction. The flexible haptics allow the IOL to adapt its position and shape during accommodation, while the rigid optic portion maintains its optical integrity. This dynamic flexibility in specific regions resolves the contradiction between overall shape stability and accommodation adaptability.
Data Source
AI summary
A method of implanting an intraocular optic assembly that has at least a first and second optics interconnected to one another with a plurality of stanchions can include rotating the first optic and the second optic relative to one another and thereby drawing the stanchions at least one of between the first optic and the second optic and around one of the first optic and the second optic. The method can also include folding, after the rotating, the intraocular optic assembly while retaining the stanchions in the at least one of between the first optic and the second optic and around one of the first optic and the second optic. The method can also include inserting, after the folding, the intraocular optic assembly in an eye through an incision in a cornea of the eye.