Corneal Pocket Formation Using Variable Laser Scan Geometry
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Solution Overview
Problem
Conventional ophthalmological devices lack precision and individuality in creating pockets within the cornea, particularly when dealing with existing pigment material, posing risks to the patient's eye.
Innovation Solution
An ophthalmological device comprising a laser source, focusing optics, and a scanner system controlled by an electronic circuit to move the focal spot with varying scanning speeds and parameters along predetermined paths, allowing for precise formation of pockets in the cornea, including triangular or trapezoidal shapes, and the ability to create multiple interconnected pockets with varying geometries and depths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional scanner systems are used to create pockets in the cornea, then basic cutting functionality is achieved, but precision and individuality are insufficient
Solution Approach 1:
The patent applies dynamics by making the scanning system adjustable and adaptable. The scanner system can be dynamically configured to create different pocket geometries (triangular, trapezoidal, circular) and can adapt scanning speeds and patterns based on individual eye anatomy. This allows the system to transition from fixed conventional patterns to flexible, patient-specific configurations, resolving the contradiction between precision and adaptability.
Solution Approach 2:
The patent utilizes parameter changes by modifying scanning parameters (speed, pattern, geometry) to achieve precise pocket formation. Different scanning parameters are applied based on the specific clinical requirement and patient anatomy. The system can change parameters such as scanning speed along different paths, pocket shape parameters, and depth control, enabling both high precision and individualization simultaneously.
2Manufacturing precision
If conventional cutting patterns are used, then basic pocket creation is achieved, but precision and individuality required for up to date applications are lacking
Solution Approach 1:
The patent applies segmentation by dividing the corneal treatment into multiple discrete scanning paths and pocket configurations. Instead of using a single complex pattern, the system segments the cutting process into multiple manageable paths that can be individually optimized. This segmentation allows for precise control of each cutting segment while maintaining overall system manageability, resolving the contradiction between precision and complexity.
3Reliability
If conventional ophthalmological devices are used for pocket creation, then basic surgical functionality is achieved, but safety is compromised due to lack of precision
Solution Approach 1:
The patent implements feedback mechanisms through the electronic circuit that controls the scanner system. The system can monitor and adjust scanning parameters in real-time based on feedback from the treatment process, ensuring precise pocket formation. This feedback control enhances safety by preventing deviations from the planned treatment path, while simultaneously improving precision through dynamic parameter adjustment.
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
Enables precise and safe creation of pockets in the cornea for procedures such as pigment insertion or removal of lenticular tissue, adapting to individual eye anatomy, and providing controlled access for implants or ventilation.
Implementation Method 1
a laser source configured to generate a pulsed laser beam, focusing optics configured to make the pulsed laser beam converge onto a focal spot in the cornea
Data Source
AI summary
The present disclosure relates to an ophthalmological device for surgical treatment of a cornea of an eye, the ophthalmological device comprising a laser source, a focusing optics, a scanner system and an electronic circuit. The electronic circuit is configured to control a first scanner device of the scanner system to move the focal spot with a first scanning speed along a line, thereby forming a scan line, to control a second scanner device of the scanner system to move the scan line with a second scanning speed along a predetermined processing path, which extends inside the cornea, for treating the cornea, and to control the ophthalmological device to vary at least one of: a geometrical parameter of the scan line or a physical parameter of the scan line, along the predetermined processing path.