Catheter Path Simulation in Blood Vessel Aneurysm
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Solution Overview
Problem
Conventional methods for determining the travel path of a catheter in a blood vessel lack precision, relying on subjective measurements that are affected by random factors, leading to inaccurate shaping and positioning of the catheter during aneurysm surgeries.
Innovation Solution
A method and apparatus that simulate the travel path of a catheter in a blood vessel by determining a preset path based on the extending direction of an artery, simulating the path in the lumen of the target artery segment, and correcting it to obtain a corrected path that accurately reflects the three-dimensional morphology of the artery, ensuring the catheter follows the arterial shape for precise insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods are used to determine catheter travel path, then the process is simple, but the measurement precision is poor due to subjective measurements affected by random factors
Solution Approach 1:
The patent creates a three-dimensional simulated model of the blood vessel based on imaging data (CTA, MRA, orDSA), which copies the actual vessel morphology into a virtual environment. This simulation model serves as an accurate replica that can be processed and analyzed computationally, replacing imprecise subjective measurements with objective digital copying of the vessel structure.
Solution Approach 2:
The patent replaces manual mechanical measurement and subjective judgment with computer-based simulation and automated path planning algorithms. The system uses computational methods to calculate optimal catheter paths through the three-dimensional vessel model, substituting the mechanical process of physical measurement with digital simulation and algorithmic optimization.
2Manufacturing precision
If the catheter path is determined to match the blood vessel shape accurately, then the catheter insertion precision is improved, but the complexity of determining the path increases
Solution Approach 1:
The patent performs preliminary actions by pre-processing imaging data to reconstruct the three-dimensional blood vessel model before catheter path determination. The system pre-calculates vessel geometry, wall thickness, and lumen shape, storing this information in the simulation model. This preliminary preparation simplifies the subsequent path planning process while ensuring high precision in catheter shaping.
Solution Approach 2:
The patent transitions from two-dimensional imaging data (2D X-ray, angiograms) to three-dimensional spatial representation (3D volumetric model). By adding the temporal/dimensional aspect of depth and volume, the system creates a comprehensive three-dimensional map of the blood vessel, enabling precise catheter path planning that accounts for spatial relationships in all three dimensions rather than just two.
3Reliability
If a three-dimensional simulation model is used to simulate catheter travel path, then the accuracy of catheter placement is enhanced, but the computing resources and time required increase
Solution Approach 1:
The patent segments the blood vessel into discrete three-dimensional elements or voxels, creating a manageable computational grid that represents the vessel structure. This segmentation allows the complex continuous vessel geometry to be processed as discrete data points, reducing computational complexity while maintaining three-dimensional accuracy. The catheter path is then calculated by navigating through these segmented segments rather than processing the entire continuous vessel at once.
Data Source
AI summary
A method, an apparatus, and a device for simulating a travel path of a catheter in a blood vessel. The method comprises: determining a preset path for the catheter to travel in a target artery segment based on extending direction of an artery, wherein the target artery segment refers to an artery segment which is subsequently subjected to catheter path simulation and includes an aneurysm (S101); simulating the travel path of the catheter in a lumen of the target artery segment (S102); and correcting the travel path based on the preset path to obtain a corrected travel path (S103): in this way, the resulting simulated and corrected travel path of the catheter may characterize the actual travel path of the catheter in the artery and may also reflect a substantial shape of the catheter indwelling in the lumen of the artery, wherein the corrected travel path highly agrees with the shape of the artery. Based on the corrected travel path, the travel path of the catheter in the blood vessel and the shape and position of the catheter indwelling in the blood vessel may be determined more accurately, such that the operator may determine more intuitively whether the catheter may be inserted to a specified position in the blood vessel, which enhances convenience. The catheter travels spirally along the arterial wall, ensuring stability of the catheter during a surgery process.