Capsular Tension Ring for Intraocular Lens Supporter
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Solution Overview
Problem
Conventional intraocular lens insertion methods lead to capsular sac contraction, resulting in loss of natural eye lens function, specifically the ability to control thickness through active three-dimensional movements, limiting vision to passive focus based on predetermined intraocular lens power.
Innovation Solution
An intraocular lens supporter is designed to be inserted into the capsular sac, featuring a first face contacting the inner surface at specific lengths and a second face with a smaller extended length, both potentially flexible and made of materials like silicone, to mimic the natural eye lens's movement by interacting with the zonule of Zinn, allowing active deformation and improved vision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an intraocular lens is inserted into the capsular sac, then the patient receives vision correction, but the capsular sac contracts and loses its natural function to control lens thickness
Solution Approach 1:
The patent introduces a capsular tension ring as an intermediary device between the intraocular lens and the capsular sac. This ring maintains the structural integrity of the capsular sac while distributing tension evenly, preventing contraction and preserving the natural ability of the capsular sac to control lens thickness through zonule of Zinn relaxation and contraction.
2Stability of the object's composition
If the capsular sac is supported by a rigid structure, then the shape is maintained, but the natural movement and shape deformation capability is lost
Solution Approach 1:
The capsular tension ring is designed with flexible materials that allow controlled deformation. The ring maintains the overall shape of the capsular sac while permitting localized shape changes necessary for natural lens movement. The flexibility enables the ring to accommodate the dynamic requirements of the eye while providing structural support.
3Stability of the object's composition
If the intraocular lens is fixed in position, then it provides stable vision, but it cannot perform active three-dimensional movements to control focus
Solution Approach 1:
The patent creates a dynamic system where the intraocular lens can move within the capsular sac. The capsular tension ring provides a stable framework while allowing the lens to perform active three-dimensional movements in response to cataract removal and refilling processes. This dynamic arrangement enables the lens to adapt its position and shape for optimal vision correction.
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 intraocular lens supporter enables the intraocular lens to operate like a natural eye lens, transferring forces from the ciliaris muscle through the zonule of Zinn, enhancing vision for conditions like cataract, presbyopia, and high myopia by allowing active shape deformation and volume changes.
Implementation Method 1
transferring forces from the ciliaris muscle through the zonule of Zinn
Implementation Method 2
both potentially flexible and made of materials like silicone, to mimic the natural eye lens's movement by interacting with the zonule of Zinn, allowing active deformation
Data Source
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AI summary
Disclosed is an intraocular lens supporter having a control ability. One embodiment of the present invention provides an intraocular lens supporter that is inserted into a capsular sac, including a first face coming in contact with an inner surface of the capsular sac in at least one point as a structural body that is extended along an equatorial region of the capsular sac; and a second face arranged opposite to the first face, wherein, in a section where the structural body is cut along a virtual plane in a visual axis direction (Y direction) of an eye lens, the first face is provided at a length as much as 3/4 to 3 times of a length (d5, d 10) of a region where an zonule of Zinn is coupled to an outer surface of the capsular sac.