Intraocular Lens Assembly Zonule Force Transfer
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Solution Overview
Problem
Conventional intraocular lens implantation methods result in the loss of active three-dimensional movement of the eye lens, as the anterior and posterior capsules adhere post-surgery, limiting the eye's ability to focus on objects due to the contraction of the capsular sac, which restricts the zonule of Zinn's function.
Innovation Solution
An intraocular lens assembly with a ring-shaped support body and connection means that includes specific contact portions and a deformation facilitating groove, allowing for efficient transfer of complex movements from the zonule of Zinn to the intraocular lens, enhancing its performance by mimicking the natural eye's focusing mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a capsular tension ring is inserted to fix the intraocular lens, then the intraocular lens can be securely positioned, but the anterior and posterior capsules adhere together, losing the ability to transfer zonule forces for active focusing
Solution Approach 1:
The support body is divided into multiple contact portions (first front contact portion, first rear contact portion, second front contact portion, second rear contact portion) that are spatially segmented to interact with different regions of the capsular sac, allowing stable positioning while preserving capsule mobility for focusing
Solution Approach 2:
The support body incorporates a deformation facilitating groove that allows dynamic deformation of the connection means, enabling the system to adapt to capsule contraction and expansion movements while maintaining lens positioning, thus restoring active focusing capability
2Stability of the object's composition
If the capsular sac contracts after intraocular lens insertion, then the lens becomes securely fixed, but the zonule of Zinn cannot relax and contract to control lens thickness, eliminating three-dimensional movement
Solution Approach 1:
The connection means is designed with a deformation facilitating groove that enables dynamic deformation, allowing the system to accommodate capsule contraction and expansion while maintaining lens fixation stability and preserving three-dimensional movement for focusing
Solution Approach 2:
The support body acts as a flexible structure that can deform with capsule movements, transferring forces from the zonule of Zinn to the intraocular lens while maintaining stable positioning, thus enabling active focusing through flexible force transmission
Data Source
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AI summary
An intraocular lens assembly configured to effectively transfer movement of a zonule of Zinn to improve performance of an intraocular lens. The intraocular lens assembly is inserted into the eyeball, and includes: an intraocular lens support body (10) configured in a shape of a ring inserted into the capsular sac of the eyeball, and provided with an outer circumferential surface (11) including a first front contact portion (11a) and a first rear contact portion (11b), and an inner circumferential surface (12) facing the outer circumferential surface (11) and including a second front contact portion (12a) and a second rear contact portion (12b); a connection means (50) including a deformation facilitating groove (52c) provided between a third front contact portion (52a) and a third rear contact portion (52b) and forming a space spaced apart from the inner circumferential surface (12); and an intraocular lens (30) connected to the connection means.