Catheter Position Tracking with Blood Vessel Model Correspondence
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Solution Overview
Problem
Conventional methods for detecting the position of a long medical device within a blood vessel, such as a guide wire, are cumbersome and require pre-measuring magnetic sensor signals, making real-time tracking difficult and impractical for locations other than the head where X-ray images are obtained.
Innovation Solution
A system and method that utilizes a correspondence detection portion to detect the position of a long medical device within a blood vessel by acquiring a blood vessel model, detecting the correspondence between the model and the device's position, and displaying their association using radio waves, ultrasound imaging, or vascular endoscopy, without the need for pre-measuring magnetic sensor signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If magnetic sensor mapping is used to detect catheter position, then position detection is possible, but the process becomes complex and time-consuming due to requiring pre-measurement of magnetic sensor signals
Solution Approach 1:
The patent replaces the mechanical magnetic sensor mapping system with an optical imaging system. Instead of using magnetic sensors that require pre-measurement and complex signal processing, the invention uses an X-ray imaging system with image processing to detect catheter position. This substitution of detection methodology eliminates the need for magnetic field mapping while maintaining position detection capability.
Solution Approach 2:
The patent creates a digital model (copy) of the blood vessel geometry based on X-ray images. This virtual model is then used to track and display catheter position without requiring physical magnetic sensors or pre-measurement procedures. The digital twin approach simplifies the detection process while providing accurate real-time position information.
2Loss of information
If X-ray imaging is used to obtain blood vessel images, then visual guidance is available, but real-time tracking of the medical device inside the blood vessel is not possible
Solution Approach 1:
The patent implements continuous X-ray imaging to capture the blood vessel structure and medical device position in real-time. By continuously acquiring images and processing them through the digital model, the system maintains both the structural information and real-time tracking capability simultaneously, eliminating the time delay present in conventional methods.
Solution Approach 2:
The system uses image processing to continuously feedback the medical device position information to the operator. The processed images provide real-time visual feedback showing the catheter location within the blood vessel, enabling dynamic adjustment and continuous monitoring without interrupting the procedure.
3Measurement precision
If conventional magnetic detection methods are used, then catheter position can be measured, but the method is limited to head locations where X-ray imaging is difficult
Solution Approach 1:
The patent develops a universal detection system based on X-ray imaging and digital modeling that can be applied to blood vessels in any location throughout the body. Unlike magnetic detection methods limited to the head, this system works equally well for coronary arteries, peripheral vessels, and other locations, providing consistent position detection capability across diverse anatomical sites.
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 easy and accurate real-time tracking of the medical device's position within the blood vessel model, improving convenience and reducing the complexity of the detection process.
Implementation Method 1
The correspondence detection portion may include a plurality of radio wave reception portions arranged around a subject and a radio wave transmission portion provided in the long medical device
Implementation Method 2
The model acquisition portion may obtain a blood vessel model generated based on an ultrasound echo image obtained by the ultrasound probe
Data Source
AI summary
A system for detecting a position of a long medical device includes a model acquisition portion that acquires a blood vessel model, a correspondence detection portion 1 that detects a position of a long medical device inserted into a blood vessel and detects a correspondence between the blood vessel model and the position of the long medical device, and a display portion that displays the position of the long medical device in association with the blood vessel model on the basis of a detection result of the correspondence detection portion.