Rotary-Arm IOL Insertion for Small-Incision Haptic Alignment
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Solution Overview
Problem
The challenge of inserting intraocular lenses (IOLs) through small incisions in the eye during cataract surgery is exacerbated by the size and functionality issues of existing insertion tools, particularly as incision sizes shrink, leading to longer healing times and potential complications.
Innovation Solution
A haptic optic management system (HOMS) is integrated into the insertion tool, which includes a housing with pivotable arms that fold and tuck the IOL's haptics, allowing it to be dispensed through a compact nozzle, facilitating insertion through small incisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the incision size is reduced to minimize trauma and healing time, then post-operation healing time is reduced, but the insertion tool size and functionality become problematic
Solution Approach 1:
The IOL is folded into a compact configuration that nests within the insertion tool's nozzle. The optic and haptics are arranged in a nested structure allowing the entire lens to be contained within a small delivery catheter, enabling insertion through minimal incisions while maintaining full functionality of the IOL components
Solution Approach 2:
The insertion tool employs dynamic arms that can pivot and move during the insertion process. These arms transition from a retracted position during insertion to an extended position after insertion to manipulate the haptics, allowing the tool to adapt its configuration based on the operational phase
2Object-affected harmful factors
If the incision size is reduced to minimize trauma, then patient trauma is minimized, but proper alignment and stabilization of the IOL becomes difficult
Solution Approach 1:
The arms are pre-positioned and pre-configured within the insertion tool before the IOL is inserted. After the IOL is delivered through the minimal incision, the arms pivot into position to engage the haptics, performing the alignment and stabilization actions immediately following insertion without requiring additional manual manipulation through the small incision
Solution Approach 2:
The pivotable arms serve as an intermediary mechanism between the insertion tool and the IOL haptics. They extend through the incision to reach and manipulate the haptics inside the eye, providing the necessary control for alignment and stabilization without requiring the surgeon to manually manipulate tools through the small incision opening
3Length of moving object
If a compact nozzle is used to facilitate small incision insertion, then incision size is reduced, but the functionality to manipulate haptics is limited
Solution Approach 1:
The arms are designed with pivot joints that allow them to transition from a compact retracted position within the nozzle to an extended operational position. This dynamic movement enables the arms to fit within the compact nozzle during insertion while providing full range of motion for haptic manipulation after the IOL is delivered
Solution Approach 2:
The manipulation function is segmented into two phases: insertion phase where the arms are retracted within the compact nozzle, and manipulation phase where the arms pivot outward to engage the haptics. This segmentation allows the nozzle to remain compact while still providing access to haptic manipulation capabilities when needed
Data Source
AI summary
Systems, methods, and devices for inserting an intraocular lens (IOL) assembly into an eye may be provided. An example optic management system may include a housing having a first end and a second end and a first side extending between the first end and the second end. The housing may include a cavity formed in the first side of the housing and configured to accommodate an intraocular lens, wherein the cavity comprises a first end portion, a second end portion, and a central portion. The housing may further include a bore formed in the housing, wherein a first portion of the bore extends from the first end to the cavity. The haptic optic management system may further include a ceiling disposed on the first side of the housing. The haptic optic management system may further include arms pivotably coupled to the housing in the cavity.