Intraocular Lens Injector With Adjustable Nozzle Protrusion
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Solution Overview
Problem
Existing intraocular lens injectors lack flexibility to accommodate different surgical techniques, either requiring deep or shallow insertion of the nozzle portion, which affects the size of the incision wound and the method of lens insertion.
Innovation Solution
An intraocular lens injector with a movable and detachable attachment member that can be attached to the nozzle portion, allowing for adjustable insertion depth and providing a viewing window for surgical control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a circumferential protrusion is formed on the nozzle portion, then the nozzle portion can be inserted shallowly into the incisional wound, but the intraocular lens cannot be guided into the lens capsule reliably
Solution Approach 1:
The invention applies the dynamics principle by making the protrusion amount of the nozzle portion adjustable rather than fixed. The protrusion amount can be changed according to the surgical method being performed (e.g., larger protrusion for wound-assisted method requiring shallow insertion, smaller or no protrusion for direct injection requiring deep insertion). This dynamic adjustability allows the same injector to adapt to different insertion depth requirements while maintaining reliable lens capsule guidance when needed.
Solution Approach 2:
The invention applies the parameter changes principle by enabling modification of the protrusion amount parameter of the nozzle portion. Through detachable attachment members with different protrusion characteristics, the physical parameter of the nozzle can be changed to match different surgical scenarios. This allows optimization of both insertion depth and lens capsule guidance reliability by selecting the appropriate protrusion parameter for each specific surgical technique.
2Reliability
If the nozzle portion is inserted deeply into the incisional wound, then the intraocular lens can be guided into the lens capsule reliably, but the incisional wound size cannot be reduced
Solution Approach 1:
The invention applies dynamics by allowing the protrusion amount of the nozzle portion to be adjusted dynamically based on the surgical method. For wound-assisted methods where small incisions are used, a larger protrusion is provided to enable shallow insertion while maintaining reliable lens capsule guidance. This dynamic adaptation allows the system to optimize both incision size and guidance reliability simultaneously for different surgical approaches.
Solution Approach 2:
The invention applies universality by designing an injector system that can perform multiple functions through detachable attachment members. The same injector base can accommodate different attachment members with varying protrusion characteristics, enabling it to handle both wound-assisted methods (requiring shallow insertion) and direct injection methods (requiring deep insertion). This multi-functionality eliminates the need for separate injectors for different surgical techniques.
3Adaptability or versatility
If both deep insertion and shallow insertion methods are supported, then flexibility in surgical technique is improved, but device complexity increases
Solution Approach 1:
The invention applies segmentation by dividing the injector into modular components: a base injector and detachable attachment members. Each attachment member is a separate segment with specific protrusion characteristics optimized for particular surgical methods. This segmentation allows the system to achieve high adaptability to different surgical techniques while keeping each individual component simple and manageable, reducing overall system complexity through modular design.
Solution Approach 2:
The invention applies universality by creating a single injector base that can accommodate multiple attachment members, enabling one device to perform multiple surgical functions. This universal design achieves high adaptability to different surgical techniques (both deep and shallow insertion methods) without requiring multiple separate injectors, thereby managing device complexity through consolidation rather than proliferation of components.
Data Source
AI summary
There is provided an intraocular lens injector for injecting an intraocular lens into an eye, including: an injector main body 5; an injection tube 7 attached to a tip part of the injector main body 5 and having a nozzle portion 7b; and an attachment member 16 having a protruding surface disposed in a state of protruding to outside from an outer circumferential surface of the nozzle portion 7b, wherein the attachment member 16 has an engaging portion 16b engaged with a sleeve portion 16a and is configured to be movable with respect to the injection tubed 7.