Lithotripsy Laser Parameter Control for Heterogeneous Stone Fragmentation
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Solution Overview
Problem
Lithotripsy devices face challenges in effectively fragmenting or breaking calculi or stones with heterogeneous compositions, as they have varying mechanical properties, requiring a technique to optimize laser light parameters for efficient fragmentation.
Innovation Solution
A system and method that involves a controller to select and iterate through various operating parameters of a laser light source, such as energy, peak power, pulse width, and frequency, to determine and apply optimized settings for fragmenting calculi, allowing for efficient breaking of stones with different mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single set of laser operating parameters is used, then the device complexity is reduced and operation is simplified, but the effectiveness of fragmenting stones with heterogeneous compositions deteriorates
Solution Approach 1:
The laser operating parameters are made dynamic and adjustable rather than fixed. The system allows real-time modification of energy, peak power, pulse width, and frequency parameters to match the mechanical properties of different stone types, enabling effective fragmentation of heterogeneous compositions while maintaining operational simplicity through automated parameter selection
Solution Approach 2:
The invention systematically varies laser operating parameters (energy, peak power, pulse width, frequency) to optimize fragmentation effectiveness for different stone compositions. By establishing parameter sets corresponding to different mechanical properties, the system achieves reliable stone breaking while keeping the interface simple through pre-configured parameter selections
2Reliability
If multiple laser operating parameters are tested and optimized, then the stone fragmentation effectiveness is improved, but the treatment time and device complexity increase
Solution Approach 1:
Laser operating parameters are pre-configured and optimized before treatment based on stone mechanical properties. The system establishes parameter sets in advance corresponding to different stone types, eliminating the need for time-consuming real-time optimization during actual stone fragmentation procedures
Solution Approach 2:
The system dynamically selects appropriate pre-optimized parameter sets based on real-time assessment of stone mechanical properties, allowing rapid adaptation without requiring extensive parameter testing during treatment, thus reducing overall treatment time while maintaining fragmentation effectiveness
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 enables more effective and efficient fragmentation of calculi by optimizing laser light settings based on the mechanical properties of the stone, improving the lithotripsy process by allowing for targeted and efficient breaking of stones with varying compositions.
Implementation Method 1
One such device includes an optical fiber for outputting a laser light as an energy source for fragmenting or breaking the calculus or stone
Data Source
AI summary
System and methods for controlling a laser light source of a lithotripsy device to fragment or break a target object are disclosed. An exemplary system includes a controller that can perform one or more iterations of a first process and one or more iterations of a second process. The first process includes steps of selecting at least one variable operating parameter of a laser light source of a lithotripsy device; determining a value of each of a plurality of base settings of the at least one variable operating parameter selected; and selecting one of the plurality of base settings based on signals received from the target in response to laser irradiation according to the value of each of the plurality of base settings set. The second process includes controlling the laser light source based on the one of the plurality of base settings selected.