Curved Eye Tissue Treatment Path Feasibility Check
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Solution Overview
Problem
Existing ophthalmological devices face limitations in processing curved treatment faces in eye tissue, as scanner systems and their actuators can be overcharged, leading to undesired alterations and potential harm to the patient's eye.
Innovation Solution
An ophthalmological device with a scanner system that performs a feasibility check using treatment control data and scan performance characteristics to ensure the focal spot movement does not exceed scanner capabilities, generating an alarm or adjusting the treatment data if necessary, and includes a circuit to control the scanner system to process curved treatment faces within these limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the scanner system is used to process curved treatment faces with high flexibility and performance, then the ability to define and produce three-dimensionally curved treatment faces is improved, but the risk of overcharging the scanner system increases, leading to undesired alteration of treatment and potential harm to the patient's eye
Solution Approach 1:
The control device performs a preliminary feasibility check by comparing scan requirements (derived from treatment control data and patient-specific anatomy) against scanner performance characteristics before actual treatment. This advance verification prevents overcharging the scanner system while maintaining the ability to process complex curved treatment faces.
Solution Approach 2:
The system incorporates a feedback mechanism where the control device continuously monitors whether the planned focal spot trajectory exceeds scanner capabilities. The feasibility check provides feedback on system limitations, allowing the treatment plan to be adjusted or rejected before execution, thereby ensuring reliable operation.
2Productivity
If the scanner system operates at high performance limits to process complex curved treatment faces, then processing capability is improved, but the scanner system may be overcharged causing undesired alteration of intended treatment
Solution Approach 1:
The system performs a preliminary feasibility check that calculates scan requirements based on the intended treatment geometry and patient-specific anatomy. By verifying these requirements against scanner performance characteristics before treatment, the system ensures that complex curved treatment faces can be processed accurately without exceeding scanner capabilities that would compromise precision.
Solution Approach 2:
The control device preemptively prevents treatment accuracy degradation by rejecting or modifying treatment plans that would overcharge the scanner system. This preliminary protective action avoids the undesired alterations that would occur if the scanner operated beyond its performance limits during actual treatment execution.
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
Prevents overcharging of the scanner system, ensuring safe and accurate processing of curved treatment faces in eye tissue by avoiding scanner system overload.
Implementation Method 1
a laser source (11) configured to generate a pulsed laser beam (B)
Implementation Method 2
a focussing optical module (12) configured to make the pulsed laser beam (B) converge onto a focal spot (S) in or on the eye tissue
Data Source
AI summary
An ophthalmological device for processing a curved treatment face in eye tissue comprises a scanner system with a plurality of scan axes configured to move the focal spot to target locations in the eye tissue. A circuit is configured control the scanner system to move the focal spot to target locations along a processing path, defined by treatment control data, to process the curved treatment face in the eye tissue. The circuit is further configured to perform a feasibility check, using the treatment control data and scan capabilities of the scanner system, defined by scan performance characteristics of each particular scan axis. In case the feasibility check indicates that moving the focal spot along the processing path exceeds the scan capabilities of the scanner system, the circuit adjusts the treatment control data.