Hydraulic Loading System for Intraocular Lens Delivery
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Solution Overview
Problem
Existing delivery devices for intraocular lenses (IOLs) face challenges in reducing the delivery profile of IOLs to enable their insertion through small incisions without causing damage to the lens.
Innovation Solution
A hydraulic loading system is used to compress and elongate the IOL within a delivery device, minimizing shear and tensile forces by reshaping the lens under compression, and utilizing a fluid to redistribute within the lens, allowing it to be loaded into the device without damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the intraocular lens is compressed to reduce its delivery profile for insertion through small incisions, then the lens can be delivered through smaller incisions, but the lens may be damaged during compression and loading
Solution Approach 1:
The patent employs a hydraulic loading system where fluid is pumped into a compression chamber containing the intraocular lens. The fluid pressure gradually compresses the lens from an expanded configuration to a compressed delivery configuration, allowing the lens to be reduced to a smaller delivery profile while minimizing damage through controlled, uniform compression forces distributed throughout the lens structure.
Solution Approach 2:
The patent changes the physical state and configuration parameters of the intraocular lens during delivery. The lens transitions from an expanded configuration with larger dimensions to a compressed delivery configuration with reduced cross-sectional dimensions, enabling passage through small incisions. The compression ratio and final dimensions are carefully controlled to achieve the necessary size reduction while maintaining lens integrity.
2Length of moving object
If the intraocular lens is compressed to enable insertion through small incisions, then the incision size can be reduced, but the complexity of the delivery device increases
Solution Approach 1:
The delivery device incorporates a hydraulic system with a fluid reservoir, pump mechanism, and compression chamber with fluid communication. The pump delivers fluid to the compression chamber, creating controlled pressure to compress the lens. This hydraulic mechanism enables precise control of the compression process while integrating all necessary functions within a single delivery device structure.
Solution Approach 2:
The compressed intraocular lens is loaded into the distal end of the delivery device, nested within the compression chamber and delivery catheter structure. The lens in its compressed state fits within the confined space of the delivery device, which then delivers it through the incision. The nested arrangement allows the compressed lens to be contained and delivered through a device of manageable size.
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
The hydraulic loading system effectively reduces the delivery profile of IOLs, allowing them to be inserted through small incisions while minimizing damage to the lens, ensuring efficient and safe delivery.
Implementation Method 1
compressing the intraocular lens comprises redistributing the fluid with the intraocular lens
Data Source
AI summary
Delivery devices for delivering an ophthalmic device into an eye. In some embodiments the delivery devices are adapted to deliver an intraocular lens into an eye.