Remote-Actuated Intraocular Lens Holding Devices for Position Correction
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Solution Overview
Problem
Current IOL replacement surgeries face challenges in predicting exact lens characteristics, lens-positioning errors, and post-surgery deviations, leading to suboptimal vision correction and the need for additional invasive procedures to adjust IOL position.
Innovation Solution
Development of non-invasive, remote-controlled IOL holding devices with a movement system that allows angular and axial displacement of the IOL using a helical path, enabled by a stator and rotor mechanism activated by a remote energy source, allowing precise adjustment of the IOL position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional IOL replacement surgery is performed, then the lens is implanted, but positioning errors and post-surgery deviations occur leading to suboptimal vision correction
Solution Approach 1:
The patent applies preliminary action by equipping the IOL with an integrated movement system and actuators before implantation, enabling post-surgical position adjustments without requiring additional invasive procedures. The system is pre-configured with a rotor, stator, and actuators that can be remotely activated to correct positioning errors after the lens is implanted in the eye.
Solution Approach 2:
The patent replaces traditional mechanical adjustment methods (which would require surgical intervention) with a remote-controlled electromagnetic or electrostatic actuation system. The actuators can be activated remotely through the eye's tissues using non-invasive energy sources, substituting mechanical surgical adjustment with field-based actuation that allows precise position control without additional incisions.
2Ease of operation
If repeated surgery is performed to displace the IOL, then position correction is achieved, but the procedure becomes invasive and complex
Solution Approach 1:
The patent applies self-service by integrating the movement system directly into the IOL structure, allowing the lens to adjust its own position autonomously through remote activation of its actuators. The IOL becomes self-correcting, eliminating the need for external surgical intervention to reposition it, thereby simplifying the overall procedure while maintaining adjustment capability.
Solution Approach 2:
The patent implements dynamics by designing the IOL with movable components including a rotor and stator that enable the lens to dynamically adjust its position after implantation. The movement system allows the IOL to transition from a static implanted device to a dynamically adjustable one, capable of realigning itself based on post-surgical positioning needs without requiring repeated surgical procedures.
3Adaptability or versatility
If a unique UV sensitive polymer is used for post deforming, then compensation is enabled, but the solution is limited in scope and reversibility
Solution Approach 1:
The patent applies parameter changes by using actuators that can modify the IOL's position parameters (angular and axial orientation) through controlled mechanical movement. Instead of relying on UV-sensitive polymer deformation, the system uses electric or magnetic fields to actuate the rotor and stator, enabling reversible and repeatable position adjustments that maintain lens material stability while achieving the desired compensation effects.
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
Enables precise, non-invasive, and repeatable correction of IOL position, improving vision correction outcomes without the need for additional surgeries, using a foldable and elastic device that can be implanted in the eye.
Implementation Method 1
a movement system operable to cause incremental rotation of the rotor portion and the IOL, around the optical axis of the IOL, with respect to the stator portion, the movement system comprising a plurality of actuators
Implementation Method 2
operable to rotate the IOL, around an optical axis of the IOL, by absorbing energy from a remote energy source
Implementation Method 3
the displacement in the axial direction can be achieved by using a helical path of displacement such that rotation about the optical axis can result in displacement along the optical axis
Data Source
AI summary
Devices for implanting inside an eye and for holding an intraocular lens (IOL) are presented; the device being operable to rotate the IOL, around an optical axis of the IOL, by absorbing energy from a remote energy source; the device comprises: a stator portion configured to be fixedly positioned inside the lens capsule of the eye; a rotor portion configured to be fixedly attached to the IOL; and a movement system operable to cause rotation of the rotor portion and the IOL, the movement system comprises a plurality of actuators and at least one interaction region associated with the plurality of actuators, the plurality of actuators comprise at least two actuators operable to cause the rotation of the rotor portion and the IOL in each of the clockwise and counterclockwise angular directions, the plurality of actuators and the at least one interaction region being aligned such that at each given moment in time, each actuator of the plurality of actuators is aligned differently with respect to the interaction region associated therewith, and is configured, when being activated by said remote energy source, to engage with the associated interaction region to cause the IOL to rotate with a different incremental rotation having either a different angular distance or a different angular direction; the device may comprise a protective shielding assembly that seals the moving parts from invading biological tissue.