Winglet Folding Device for Universal IOL Injector Systems
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Solution Overview
Problem
Current intraocular lens (IOL) injector systems are limited in their ability to safely and efficiently handle both preloaded and non-preloaded IOLs, particularly for hydrophobic and hydrophilic lenses, often requiring skilled handling to avoid damage during loading and insertion, and lack a universal solution for different types of lenses.
Innovation Solution
A universal injector system incorporating a winglet-type folding device with a controlled loading mechanism that allows for safe loading and injection of both preloaded and non-preloaded IOLs, using a folding device with two levels to transition the IOL from a loading plane to an injection plane, and a lens case with multiple positions for storage, shipping, and loading, enabling safe handling and minimization of mishandling risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a smaller incision is used for IOL insertion, then post-surgical healing time and complications are reduced, but the risk of damaging the delicate IOL during loading and insertion increases
Solution Approach 1:
The folding device is divided into two functional levels: a loading plane for safe IOL placement and an injection plane for delivery through the incision. This segmentation allows the IOL to be handled safely during loading while enabling passage through a small incision during injection.
Solution Approach 2:
The folding device acts as an intermediary mechanism between the IOL and the injection system. It provides a controlled environment for folding the IOL and transitions it from a stable loading state to an injection state, protecting the IOL from damage while enabling small incision insertion.
2Adaptability or versatility
If a universal injector system is designed to handle both preloaded and non-preloaded IOLs, then versatility and ease of operation are improved, but device complexity increases
Solution Approach 1:
The folding device is designed with a universal loading mechanism that can accommodate both preloaded IOLs (in lens cases) and non-preloaded IOLs (loose IOLs). The same folding and injection mechanism handles both types, eliminating the need for separate systems while maintaining simplicity through standardized interfaces.
Data Source
AI summary
An injection system for an intraocular lens (IOL) utilizes a folding device for the IOL. The folding device comprises a pair of co-acting winglets pivotable between an open position and a closed position, and together defining a hinge axis and a receptacle for the IOL. Each winglet has an outwardly extending, unitary leg portion defining a base plane that includes the hinge axis and a motion limiting protuberance on each said leg portion extending from the base plane. The base planes are situated at an angle relative to one another and the protuberances abut one another when the winglets are in the open position. The base planes merge into a single plane when the winglets are in the closed position.