Accommodative Intraocular Lens Manufacturing Without Incisions
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Solution Overview
Problem
The existing methods for producing accommodative intraocular lenses are complex and require making incisions in the lens, which are laborious to seal and difficult to execute.
Innovation Solution
A method involving a first and second component with a supporting body, where the first component is deformed downward to keep a liquid away from an adhesive surface, allowing the second component to be attached without direct contact, forming an accommodative intraocular lens without the need for incisions, and optionally equalizing pressures to facilitate removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the conventional method of making an incision, injecting fluid, and resealing is used, then the intraocular lens can be filled with fluid to create a deformable cavity, but the manufacturing process becomes complex and laborious
Solution Approach 1:
The adhesive surface is created on the first component before the liquid is introduced into the cavity. This preliminary preparation allows the second component to be attached to the first component before liquid injection, eliminating the need for post-assembly sealing operations and simplifying the manufacturing process
Solution Approach 2:
The intraocular lens is divided into two separate components (first component and second component) that are assembled around the liquid-filled cavity. This segmentation allows each component to be prepared independently with adhesive surfaces, enabling easy assembly without complex sealing procedures
2Ease of manufacture
If the first component is deformed downward to keep liquid away from the adhesive surface, then the second component can be attached without direct contact with liquid, but additional deformation steps are required
Solution Approach 1:
The first component is designed to be deformable, allowing it to change shape during the assembly process. The component can be deformed downward to expose the adhesive surface for attachment, then returned to its original shape to encapsulate the liquid, enabling dynamic adaptation to different manufacturing stages
3Adaptability or versatility
If the accommodative intraocular lens is designed with a deformable membrane and fluid-filled cavity, then the refractive power can be dynamically adjusted, but the manufacturing process becomes more difficult
Solution Approach 1:
A deformable membrane is used to create the cavity boundary that can change shape in response to pressure changes. This flexible membrane allows the lens to accommodate by changing the shape of the liquid-filled cavity, providing dynamic refractive adjustment while maintaining a relatively simple assembly process using the two-component structure
Solution Approach 2:
A fluid-filled cavity is created within the lens structure to enable accommodation. The hydraulic pressure within the cavity can be adjusted to change the shape of the deformable membrane, thereby dynamically adjusting the refractive power of the lens without complex mechanical mechanisms
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 method simplifies the production of accommodative intraocular lenses by avoiding the need for incisions and laborious sealing, enabling easier assembly and potential for easier removal, while allowing for dynamic focus adjustment through deformable membranes and gas permeability.
Implementation Method 1
generating a higher pressure in the exterior space than in the interior space, so that the first component deforms downwards
Implementation Method 2
application of a liquid from above onto the first component in its downwardly deformed region... attaching the second component to the first component by means of the adhesive surface
Implementation Method 3
the accommodative intraocular lens has a deformable membrane that defines a fluid-filled cavity in the interior of the intraocular lens. When the capsular bag is deformed, the membrane and the cavity are deformed, causing a shift in the focus of the intraocular lens
Implementation Method 4
The membrane is preferably gas-permeable. If some gas from the outside space is also arranged in the cavity together with the liquid, the gas can particularly easily pass through the membrane to the outside of the accommodative intraocular lens
Data Source
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AI summary
Method for manufacturing an accommodative intraocular lens (13) comprising the steps of: a) providing a first component (11), a second component (12), and a support body (1) having an interior space (2) and being open at the top so that the interior space is accessible from above; b) attaching the first component to the support body such that the interior space is bounded by the first component and the first component separates an exterior space (10) located above the first component from the interior space; c) generating a higher pressure in the exterior space than in the interior space, causing the first component to deform downwards; d) creating an adhesive surface (6) on the upper side of the first component and/or on the second component; e) applying a liquid (5) from above onto the first component (11) in its downwardly deformed area, the liquid never contacting the adhesive surface;f) Attaching the second component to the first component using the adhesive surface, thereby forming the accommodative intraocular lens and encapsulating the liquid in a cavity (8) arranged inside the intraocular lens between the first component and the second component.