Wireless Power Accommodating Intraocular Lens
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Implantable accommodating lenses for cataract and presbyopia treatment face issues with battery-powered power sources that fail over time, requiring costly and invasive replacement, and add bulk, making procedures more burdensome for patients.
Innovation Solution
An ophthalmic system with a wireless power transfer mechanism between an extraocular device and an intraocular device, eliminating the need for a battery in the intraocular device, allowing for smaller incisions and less invasive procedures, using a remote extraocular power source that can be easily replaced or recharged.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a battery-powered power source is implanted in the intraocular device, then the device can provide accommodation, but the battery fails over time requiring replacement and adds bulk making procedures more invasive
Solution Approach 1:
The power source (battery) is extracted from the intraocular device and placed in an external handheld device. This eliminates the bulk and invasiveness associated with implanted batteries while maintaining the accommodation function through wireless power transfer to the intraocular lens.
Solution Approach 2:
A wireless power transfer mechanism serves as an intermediary between the external power source and the intraocular device. This mediator enables power delivery without physical connection or implanted battery, resolving the contradiction between reliability and ease of operation.
2Use of energy by moving object
If a battery is implanted in the accommodating lens, then the lens can be powered, but it adds bulk and requires more invasive implantation and removal procedures
Solution Approach 1:
The battery is removed from the intraocular device and relocated to an external handheld device. This extraction eliminates the bulk within the implantable lens while maintaining power delivery through wireless transmission, thereby simplifying implantation and removal procedures.
Solution Approach 2:
The mechanical battery component is replaced with a wireless power transfer system. This substitution eliminates the need for physical battery housing within the lens, reducing device complexity and procedural invasiveness while maintaining power functionality.
3Reliability
If conventional implantable power sources are used, then the lens can accommodate, but they fail over time requiring costly and burdensome replacement
Solution Approach 1:
The power source is extracted from the implantable lens and placed in an external device. Since the external battery is not subject to the same degradation constraints as implanted batteries, it can be replaced easily and inexpensively, extending the effective lifespan of the accommodation system without requiring lens replacement.
Solution Approach 2:
The system is segmented into two independent components: a permanent intraocular lens and a replaceable external power source. This segmentation allows the lens to remain in place indefinitely while only the external battery needs periodic replacement, significantly extending system durability.
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
This solution extends the interval between lens replacements, reduces surgical invasiveness, and enhances patient comfort by enabling wireless power transfer and data exchange, thus providing a more reliable and flexible accommodation solution.
Implementation Method 1
an extraocular device shaped to be removably mounted outside a bulb of an eye to which the accommodating intraocular device is implanted and configured to wirelessly transmit power
Data Source
AI summary
Ophthalmic systems and methods of changing an optical power of an ophthalmic system are described. In an example, the ophthalmic system includes an accommodating intraocular device shaped to be implantable in an eye and an extraocular device separate from the accommodating intraocular device shaped to be removably mountable to a portion of the eye outside a bulb of the eye, such as an underlid portion of the eye. In an example, the method includes wirelessly transmitting power from a power source of an extraocular device removably mounted outside a bulb of an eye to an accommodating intraocular device implanted in the eye. In an example, the method includes sensing with an accommodation sensor biological accommodation signals of the eye; generating accommodation control signals representative of the biological accommodation signals; and driving an accommodation actuator disposed in the accommodating intraocular device based on the accommodation control signals to change an optical power of the ophthalmic system.