Intraocular Lens Injection Tool Integrated Holder
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Solution Overview
Problem
Existing IOL injection instruments have complex internal configurations and require troublesome detachment processes for holding members, making them difficult to use effectively.
Innovation Solution
An IOL injection instrument with a simple configuration that integrates an IOL holder and injector body, using a rotatable IOL holder with a cover to seal and release the IOL, allowing for easy application of viscoelastic material and smooth IOL insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holding member is configured as a separate component from the injector body, then the IOL can be securely held during storage, but the injector body has a complicated internal configuration and requires troublesome detachment work
Solution Approach 1:
The holding member is integrated into the injector body as a unified structure. The holding member includes a holding space formed within the injector body, with a holding protrusion that extends from the injector body to engage with the IOL. This integration eliminates the need for separate detachable components while maintaining secure IOL holding capability during storage and transport.
2Reliability
If the holding member is configured as a separate component from the injector body, then the IOL can be securely held during storage, but troublesome detachment work is required before use
Solution Approach 1:
The holding member and injector body are merged into a single integrated unit, eliminating the detachment step entirely. The holding protrusion is permanently formed as part of the injector body structure, allowing the IOL to remain securely held during storage without requiring any detachment operations before use.
Solution Approach 2:
The IOL is pre-loaded into the holding space of the integrated injector body in advance. The holding protrusion is already in position to engage with the IOL, so no detachment or reconfiguration is needed before the injection procedure. The system is ready for immediate use after loading.
3Device complexity
If the holding member is integrated into the injector body, then the configuration is simple, but the IOL must be held securely during storage
Solution Approach 1:
The holding member is integrated into the injector body as a unified structure. The holding space is formed within the injector body, and the holding protrusion extends from the injector body to engage with the IOL, providing secure holding capability while maintaining a simple overall configuration.
Solution Approach 2:
The injector body has different local structures: a holding space with a holding protrusion for secure IOL engagement during storage, and an injection portion for delivering the IOL during use. The holding protrusion is specifically designed with engagement features that provide reliable holding, while other portions of the injector body maintain simplicity for the injection function.
4Device complexity
If the holding member is integrated into the injector body, then the configuration is simple, but the IOL must be held securely during storage
Solution Approach 1:
The holding member is integrated into the injector body as a unified structure. The holding space is formed within the injector body, and the holding protrusion extends from the injector body to engage with the IOL, providing secure holding capability while maintaining a simple overall configuration.
Solution Approach 2:
The injector body has different local structures: a holding space with a holding protrusion for secure IOL engagement during storage, and an injection portion for delivering the IOL during use. The holding protrusion is specifically designed with engagement features that provide reliable holding, while other portions of the injector body maintain simplicity for the injection function.
Data Source
AI summary
An intraocular lens (IOL) injection instrument (10) includes: an injection part (20) having an inner wall to fold an IOL (1) into a smaller shape; and a cylinder body (30) including a plunger (40) to push out the IOL from a front end (21a) of the injection part. The instrument further includes: holding means (100) provided in the cylinder body to hold the IOL without applying stress thereto; and push means (120) for pushing the IOL by applying pressing force to the IOL to release holding of the IOL held by the holding means, and the holding means includes restriction means (112b) configured to restrict movement of the IOL while no pressing force is applied by the push means (120) and configured to be deformed in a moving direction of the IOL when the pressing force is applied by the push means to release restriction of the movement of the IOL.