Haptic Optic Management With Rotary Arms for Small-Incision IOL Delivery
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Solution Overview
Problem
The challenge in ophthalmic surgery is the efficient insertion of intraocular lenses (IOLs) through small incisions, as traditional insertion tools face issues with miniaturization due to the size of the nozzle, leading to complications in folding and delivering the IOLs effectively.
Innovation Solution
A haptic optic management system (HOMS) is introduced, which includes a housing with pivotable arms that fold the IOL haptics over the optic, allowing the lens to be compactly delivered through a nozzle, using a drive system to expel it through a small incision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the incision size is reduced to minimize surgical trauma, then surgical trauma and healing time are reduced, but the ability to insert and manipulate the IOL and insertion tool is compromised
Solution Approach 1:
The IOL is folded into a compact configuration that nests within the insertion tool's nozzle. The haptics are folded back against the optic, and the optic itself is folded, allowing the entire lens assembly to be contained within a small delivery catheter that can pass through minimal incisions while maintaining full functionality for deployment
Solution Approach 2:
The insertion tool employs dynamic mechanisms including a deployable frame that transitions from a compact delivery configuration to an expanded implantation configuration. The haptics transition from a folded state during insertion to an extended state for capsular bag engagement, allowing the system to adapt its form factor to the surgical requirements at each stage
2Length of moving object
If the nozzle size is reduced to accommodate smaller incisions, then incision size is reduced, but the functionality and size of the insertion tool are compromised
Solution Approach 1:
The insertion tool is divided into functional segments: a delivery catheter for minimal access insertion, an expandable frame that deploys within the eye, and a separate IOL assembly with folded haptics and optic. This segmentation allows each component to be optimized for its specific function while passing through a small nozzle
Solution Approach 2:
The IOL and insertion tool utilize dimensional transformation by folding the three-dimensional lens structure into a two-dimensional or compressed configuration for delivery, then expanding it back to its functional three-dimensional form within the capsular bag, effectively bypassing the size limitations of the nozzle
3Volume of moving object
If the IOL is folded for compact delivery, then delivery size is reduced, but the complexity of folding and tucking mechanisms is increased
Solution Approach 1:
The IOL folding mechanism utilizes the natural elasticity and memory of the haptic materials to automatically return to their extended configuration after delivery. The folded state is maintained passively during insertion, and deployment occurs automatically upon release from the insertion tool, eliminating the need for complex active actuation mechanisms
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.