Spring-Loaded Plunger for Intraocular Lens Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for delivering intraocular lenses (IOLs) during cataract surgery are complex and prone to errors due to the multi-step process, requiring users to judge the exact position of the IOL, which can impact its folding and integrity, and increase the procedure time and cost.
Innovation Solution
A spring-loaded insertion tool with a plunger and nozzle system that uses stored spring energy to automatically advance the IOL to a predetermined position, ensuring precise placement and reducing the number of user actions required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a multi-step delivery process is used for IOL advancement, then the user can control the advancement process, but the procedure time increases and the risk of error increases
Solution Approach 1:
The IOL is pre-loaded into the lens holder in a folded configuration before the surgical procedure. The spring mechanism is pre-compressed and locked in the lens holder, storing energy that will be released to automatically advance the IOL through the nozzle into the eye, eliminating the need for manual advancement steps during surgery.
Solution Approach 2:
The spring-loaded plunger mechanism automatically advances the IOL through the nozzle without requiring continuous user intervention. The compressed spring releases stored energy to propel the plunger and IOL forward, making the system self-actuating and reducing procedure time while maintaining precision.
2Ease of operation
If manual advancement of IOL is used, then the user can judge the position, but the exact position varies and impacts folding and integrity
Solution Approach 1:
The system incorporates a mechanical stop that provides tactile feedback when the IOL reaches the predetermined position inside the eye. This stop engages with the plunger or lens holder to automatically halt advancement at the correct position, ensuring consistent folding and integrity without relying on user judgment.
Solution Approach 2:
The manual mechanical advancement system is replaced with an automated spring-loaded plunger mechanism. The spring provides controlled, consistent force to advance the IOL to a predetermined position, eliminating the variability introduced by manual operation while maintaining simplicity through mechanical means.
3Ease of operation
If multiple user actions are required for IOL delivery, then the process can be controlled, but the procedure time and cost increase
Solution Approach 1:
The lens holder and spring mechanism are merged into a single integrated unit that performs multiple functions: storing the IOL in folded configuration, compressing the spring to store energy, and automatically advancing the IOL through the nozzle. This consolidation reduces the number of separate actions required and improves procedure efficiency.
Solution Approach 2:
The spring mechanism maintains continuous readiness by remaining compressed and locked until activation. Once released, the spring continuously propels the plunger and IOL forward without interruption until the mechanical stop halts advancement, ensuring uninterrupted delivery action and improving procedural efficiency.
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 simplifies the delivery process, reduces errors, and shortens the surgical time by allowing the IOL to be advanced to a precise position within the eye using stored spring energy, enhancing the efficiency and accuracy of the procedure.
Implementation Method 1
a spring that applies a biasing force to the plunger
Data Source
AI summary
Systems, methods, and devices for inserting an intraocular lens (IOL) assembly into an eye may be provided. An apparatus for delivery of a lens component into an eye, including: a housing; a nozzle operatively coupled to the housing; a plunger at least partially and moveably disposed within the housing for driving the lens component; and a spring that applies a biasing force to the plunger.