Multi-component intraocular lens with removable optical assembly
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Solution Overview
Problem
Current refractive surgical procedures for correcting vision abnormalities, such as presbyopia and cataracts, face challenges including post-operative refractive inaccuracy, trauma to the eye, and complexity in intraocular lens insertion and exchange, which limits precision and safety.
Innovation Solution
A multi-component intraocular lens system with removable and replaceable components, allowing for adjustments and exchanges post-operatively, utilizing a foldable design for minimally invasive procedures and incorporating pharmacological agent-releasing materials for enhanced treatment options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-component intraocular lens is used, then the surgical procedure is simpler, but post-operative refractive accuracy is insufficient
Solution Approach 1:
The intraocular lens is divided into multiple independent components (base lens, optical assembly with front and back lenses) that can be implanted separately. This segmentation allows each component to be optimized for specific optical functions while simplifying the surgical procedure, as components can be inserted through smaller incisions and adjusted independently to achieve precise refractive correction.
2Reliability
If conventional intraocular lens implantation is performed, then the lens is permanently fixed, but lens exchange and adjustment are difficult
Solution Approach 1:
The lens system transitions from a static, permanently fixed design to a dynamic, adjustable configuration. The optical assembly can be detached from and reattached to the base lens, allowing surgeons to exchange optical assemblies to correct refractive errors or update prescriptions post-operatively, while the base lens remains stably implanted in the capsular bag.
3Object-affected harmful factors
If a foldable lens design is used, then the incision size is reduced, but lens structural complexity increases
Solution Approach 1:
The lens components utilize flexible, foldable materials that can be compressed into a compact form for insertion through small incisions. The base lens and optical assemblies are designed with flexible haptics and thin lens elements that can be folded and unfolded without damage, reducing eye trauma from smaller incisions while the modular structure manages the complexity through standardized components.
4Measurement precision
If direct visualization of the intraocular lens assembly is required, then surgical precision is improved, but the degree of difficulty and chance of surgical error increase
Solution Approach 1:
By segmenting the lens into a base lens with haptics and separate optical assemblies, the surgical procedure is simplified. The base lens provides stable positioning in the capsular bag, while the optical assembly can be manipulated and positioned more easily. This segmentation reduces the complexity of visualizing and manipulating the entire lens system simultaneously, lowering the chance of surgical error while maintaining positioning accuracy.
Data Source
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Figure 3A~3B
AI summary
A multi-component intraocular lens implanted in an optical system of a human eye, includes one or more removable components. One component acts as a base lens and another component acts as the front lens. A front lens formed from two integral optical portions may be milled with tabs to establish an axial orientation of the front lens. The front lens may have a different diameter than the base lens. The base lens may have sharp or angled edges and the front lens may have rounded edges. Non-optical portions of the intraocular lens system may be manufactured from a material that is capable of releasing a pharmacological agent. A flange may be fused with the base lens to allow the front lens to engage with the base lens.