Adjustable Intraocular Lens Holder for Remote Axial Repositioning
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Solution Overview
Problem
Existing intraocular lens (IOL) replacement surgeries face challenges in predicting exact lens characteristics, lens-positioning errors, tilt or shift post-surgery, and changes in corneal cylinder, leading to suboptimal vision correction and the need for additional invasive procedures.
Innovation Solution
Development of non-invasive, remote-controlled IOL holding devices with a movement system that allows precise adjustment of the IOL position and orientation relative to the optical axis, using a bendable structure and locking mechanism activated by a remote energy source, enabling incremental and reversible displacement of the IOL along the Z-axis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If repeated surgery is performed to displace the IOL, then the IOL position can be corrected, but the patient undergoes additional invasive procedures and surgical risk
Solution Approach 1:
The patent replaces the mechanical surgical approach (repeated surgery to displace IOL) with a remote-controlled electromagnetic actuation system. The IOL is equipped with embedded coils that can be remotely activated through the skin using electromagnetic fields, allowing non-invasive position adjustment without additional surgical incisions or manual manipulation.
Solution Approach 2:
The patent introduces an intermediary electromagnetic field as a mediator between the external controller and the IOL. The embedded coils in the IOL interact with external electromagnetic fields to generate actuation forces, enabling remote control of IOL position without direct physical access or invasive surgical intervention.
2Adaptability or versatility
If invasive surgical procedures are used to adjust IOL position, then the IOL can be repositioned, but the patient experiences increased surgical risk and recovery time
Solution Approach 1:
The patent substitutes invasive mechanical surgical procedures with a non-invasive remote electromagnetic control system. The IOL contains embedded electromagnetic coils that can be activated through the skin, allowing position adjustment without surgical incisions, anesthesia, or manual manipulation, thereby eliminating associated surgical risks.
Solution Approach 2:
The IOL is equipped with self-contained electromagnetic actuation capability through embedded coils. The IOL can be remotely controlled to adjust its own position without requiring external surgical intervention, manual manipulation, or additional invasive procedures, making the adjustment process self-service oriented.
3Ease of manufacture
If the IOL is rigidly fixed in position, then the surgical procedure is simple, but the IOL cannot be adjusted for vision optimization
Solution Approach 1:
The patent transforms the IOL from a static rigidly-fixed structure to a dynamic adjustable system. The IOL incorporates electromagnetic coils and control mechanisms that enable it to change its position and orientation in three-dimensional space, providing flexibility for vision optimization while maintaining simplicity in the initial implantation procedure.
Solution Approach 2:
The patent divides the IOL system into separable functional components: the optical lens element and the electromagnetic actuation mechanism. This segmentation allows the IOL to be implanted in a simple, stable manner initially, while the embedded electromagnetic components enable subsequent remote adjustment of position and orientation for vision optimization.
Data Source
AI summary
Devices configured to be implanted in a lens capsule of a human eye and securely hold an intraocular lens (IOL), and operable to displace the IOL relative to an optical axis of the IOL; the devices comprising a first member configured to be fixedly positioned inside the lens capsule, a second member to which the IOL is fixedly attachable, and a bendable structure attached at a first end thereof to the first member and at a second end thereof to the second member; the bendable structure being configured to be remotely controllably bended at various bending levels to thereby vary location of a periphery of the IOL, when the IOL is attached to the second member, along the IOL optical axis.