Intraocular Lens Delivery Device with Compression Member
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Solution Overview
Problem
Current intraocular lens delivery systems require large incisions and deformation of lenses for insertion, causing eye damage and prolonged healing, and lack efficient mechanisms for controllable deformation and orientation during delivery.
Innovation Solution
A delivery system comprising a device with a port for a cartridge that includes a leading and trailing haptic receiving area, and actuators for loading and deploying the lens, allowing for controlled deformation and orientation of the intraocular lens for minimally invasive insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a small incision is made in the eye, then eye damage is minimized and healing is shortened, but the intraocular lens cannot be inserted without deformation
Solution Approach 1:
The delivery device incorporates a compression member that can dynamically change the configuration of the intraocular lens from an expanded implantable state to a compressed delivery state. This dynamic transformation allows the lens to be inserted through a small incision and then restored to its functional shape after insertion, resolving the contradiction between minimizing incision size and facilitating lens insertion.
Solution Approach 2:
The system changes the physical parameters of the intraocular lens during delivery by applying compression forces that alter its volume and shape. The lens transitions from a large, implantable configuration to a small, insertable configuration, enabling passage through minimal incisions while maintaining the ability to assume its functional form after deployment.
2Volume of moving object
If the intraocular lens is deformed into a smaller delivery profile, then it fits through the incision, but control over the deformation is lost
Solution Approach 1:
The delivery device includes a positioning member that works in conjunction with the compression member to provide controlled deformation of the intraocular lens. The positioning member ensures that the lens is deformed in a specific, repeatable manner that maintains its structural integrity and facilitates predictable transformation from the compressed delivery state to the expanded implantable state, thereby retaining control over the deformation process.
Solution Approach 2:
The compression member acts as an intermediary mechanism between the operator and the intraocular lens, mediating the deformation process. This intermediary structure allows for controlled application of compressive forces that uniformly reduce the lens volume while maintaining control over the deformation characteristics, enabling the lens to achieve a compact delivery profile without losing control over its transformation.
3Object-affected harmful factors
If the incision size is reduced, then the procedure becomes less invasive, but the delivery device cannot be passed through
Solution Approach 1:
The delivery device employs a nested structure where the intraocular lens is contained within a delivery capsule, and the compression member is integrated within the same capsule. This nested arrangement allows the entire assembly to be passed through a small incision in a compressed state, with each component fitting within the others to minimize the overall dimension of the delivery system.
Solution Approach 2:
The delivery device utilizes a three-dimensional compression mechanism that reduces the lens volume by compressing it in multiple directions simultaneously. This dimensional approach allows the lens to be reduced to a sufficiently small profile for insertion through minimal incisions, while the delivery device itself maintains a manageable size for passage through the same incision.
Data Source
AI summary
Intraocular lens delivery devices and methods of use.