Distributed Acoustic Detector for Laser Eye Surgery
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Solution Overview
Problem
Accurately measuring exposure levels of therapeutic radiation to the eye during treatment is challenging, leading to potential damage from excessive exposure.
Innovation Solution
A distributed acoustic detector system is integrated into a laser-based ophthalmological surgical system, using multiple acoustic detectors spaced apart and electrically separated to detect acoustic waves from microbubbles formed on retinal pigment epithelial cells, generating detection signals indicative of radiation exposure levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple acoustic detectors are used to improve measurement accuracy, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The acoustic detection system is divided into multiple independent acoustic detectors spaced around the treatment field, each detecting acoustic waves from a specific region. This segmentation allows the system to achieve comprehensive coverage and improved measurement accuracy while maintaining manageable complexity through modular design
Solution Approach 2:
Multiple acoustic detectors are integrated into a unified detection system with centralized signal processing and control electronics. The individual detector signals are combined and processed together to provide comprehensive radiation exposure measurement, achieving improved accuracy through synergistic integration
2Area of stationary object
If acoustic detectors are spaced apart to cover different regions, then measurement coverage is improved, but device complexity increases
Solution Approach 1:
The detection area is segmented into multiple zones, with acoustic detectors positioned at strategic locations around the treatment field. Each detector monitors a specific angular or spatial sector, providing comprehensive coverage while simplifying the overall system architecture through zonal division
Solution Approach 2:
Acoustic detectors are arranged in a three-dimensional configuration around the treatment field, utilizing angular and radial positioning to achieve comprehensive spatial coverage. This multi-dimensional arrangement maximizes detection capability while maintaining organized system structure
3Reliability
If real-time detection is implemented to prevent excessive damage, then reliability is improved, but device complexity increases
Solution Approach 1:
The acoustic detectors provide real-time feedback on radiation-induced acoustic waves, which is processed by control electronics to monitor treatment progress and detect threshold conditions. This feedback loop enables automatic termination or adjustment of treatment to prevent excessive damage, significantly improving treatment safety
Solution Approach 2:
The system establishes predetermined safety thresholds and automated response protocols before treatment begins. When acoustic signals indicate approaching threshold conditions, the system automatically triggers protective actions such as treatment termination or parameter adjustment, preventing excessive damage before it occurs
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 system provides real-time feedback to prevent excessive damage by accurately measuring radiation exposure, enhancing the safety and effectiveness of therapeutic treatments.
Implementation Method 1
The therapeutic radiation may cause microbubbles to form on melanosomes of retinal pigment epithelial (RPE) cells of the eye of the patient during therapeutic treatment
Implementation Method 2
The acoustic detectors may be coupled to the frame structure and may be spaced apart from each other and electrically separated from each other
Data Source
AI summary
In some examples, a distributed acoustic detector system may include a frame structure and multiple acoustic detectors. The frame structure may be configured to be retained in a laser-based ophthalmo-logical surgical system aligned to an eye of a patient during therapeutic treatment of the eye of the patient with the laser-based ophthalmological surgical system. The acoustic detectors may be coupled to the frame structure and may be spaced apart from each other and electrically separated from each other.