Ultrashort Pulse Laser Marking for Corneal Lenticule Extraction
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Solution Overview
Problem
Current refractive surgery techniques face challenges in precisely marking and removing lenticules for refractive correction, as existing methods may not ensure complete removal and can cause unnecessary tissue damage.
Innovation Solution
A device comprising a laser device and control computer that uses pulsed laser radiation with ultrashort pulses to create a lenticule marking and subsequently the lenticule in the cornea, allowing for precise refractive correction and ensuring complete removal by creating a flap or incision for lenticule extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional laser methods are used to create lenticules, then the surgical procedure can be performed, but the lenticule may not be completely removed and tissue damage occurs
Solution Approach 1:
The patent applies preliminary action by first creating a marking lenticule that outlines the boundary of the lenticule to be removed before actually removing it. This marking step allows the surgeon to precisely identify and track the lenticule boundaries during removal, ensuring complete extraction while avoiding damage to surrounding tissues. The marking lenticule serves as a visual guide that prevents incomplete removal and minimizes collateral tissue damage.
2Manufacturing precision
If precise marking of lenticule is achieved, then accurate removal can be ensured, but additional surgical steps and time are required
Solution Approach 1:
The patent merges the marking function and lenticule creation function into a single integrated laser procedure. The same laser system that creates the marking lenticule also creates the actual lenticule, eliminating the need for separate marking and removal steps. This consolidation reduces surgical time while maintaining high precision through the use of ultrashort pulse laser radiation that can precisely define boundaries without requiring additional manual marking steps.
3Object-affected harmful factors
If ultrashort pulse laser radiation is used, then tissue damage is reduced, but the equipment complexity increases
Solution Approach 1:
The patent applies parameter changes by utilizing ultrashort pulse laser radiation with specific temporal and spatial parameters. By controlling the pulse duration, energy density, and focal positioning, the system achieves precise lenticule marking and creation while minimizing tissue damage. The control system adjusts these parameters dynamically to match the specific requirements of each surgical step, enabling the same equipment to perform both marking and lenticule creation with high precision and minimal harm.
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 controlled refractive correction by creating a lenticule marking that outlines the lenticule for accurate removal, reducing tissue damage and ensuring the lenticule is completely removed, thus improving surgical outcomes.
Implementation Method 1
The laser device is configured to create a lenticule marking in a cornea of an eye with pulsed laser radiation to mark a lenticule
Implementation Method 2
The laser device is configured to create a lenticule in an eye using pulsed laser radiation having ultrashort pulses
Data Source
AI summary
In certain embodiments, marking a lenticule includes controlling a focus of pulsed laser radiation having ultrashort pulses. A lenticule marking is created in a cornea of an eye with the pulsed laser radiation to mark the lenticule. The lenticule is then created in the cornea with the pulsed laser radiation.