Magnetic Positioning System for Cardiac Resynchronization Therapy Optimization
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Solution Overview
Problem
Current cardiac resynchronization therapy (CRT) systems face challenges in optimizing left ventricular lead placement within the coronary sinus, which is crucial for effective heart failure treatment, as existing methods lack precision in determining the most efficient pacing settings and implantation sites.
Innovation Solution
A method and system utilizing a navigation or medical positioning system (MPS) to track sensor paths during different pacing settings, analyzing parameters like eccentricity and hysteresis to identify the most efficient cardiac tissue displacement, and programming an implantable pulse generator accordingly, optimizing LV lead placement and pacing settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional methods are used for LV lead placement, then the implantation process is simpler, but the precision of lead placement and pacing settings is insufficient
Solution Approach 1:
The patent replaces traditional mechanical fluoroscopy-based positioning with a magnetic field-based Medical Positioning System (MPS). The MPS uses magnetic sensors to track the position of the lead delivery catheter and provides real-time feedback on cardiac tissue displacement, enabling precise lead placement without relying on complex mechanical imaging systems.
Solution Approach 2:
The patent introduces an intermediary MPS sensor that measures cardiac tissue displacement indirectly through magnetic field changes. This sensor acts as a mediator between the lead delivery system and the heart tissue, providing quantitative data on tissue movement that helps optimize lead placement without requiring direct visual observation or complex mechanical measurement devices.
2Reliability
If multiple candidate pacing settings are tested, then the optimization of CRT outcomes is improved, but the time required for implantation increases
Solution Approach 1:
The patent implements a feedback mechanism where the MPS continuously monitors cardiac tissue displacement in real-time during pacing testing. The system provides immediate feedback on the effectiveness of different pacing settings by measuring tissue movement, allowing the operator to quickly identify optimal settings without waiting for delayed imaging feedback or clinical outcome assessment.
Solution Approach 2:
The patent performs preliminary testing of multiple candidate pacing settings during the implantation procedure itself, before final lead placement. By using the MPS to assess tissue displacement with different pacing configurations in advance, the system identifies the optimal settings beforehand, avoiding the need for extensive post-implantation adjustments and reducing overall implantation time.
3Measurement precision
If MPS sensor path analysis is performed, then the accuracy of tissue displacement measurement is improved, but the complexity of data processing increases
Solution Approach 1:
The patent extracts only the most relevant features from the complex MPS sensor path data, specifically focusing on cardiac tissue displacement magnitude and direction. By isolating and analyzing only the displacement parameters that are clinically relevant for lead optimization, the system reduces data processing complexity while maintaining high measurement precision for the critical parameters.
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
This approach enhances the precision of LV lead placement and pacing settings, leading to more efficient heart actuation and improved CRT outcomes by determining the optimal implantation site and programming settings based on sensor path analysis.
Implementation Method 1
the MPS sensor is tracked via a MPS sensor located in a low-power magnetic field
Data Source
AI summary
The present disclosure may take the form of a method of optimizing CRT wherein candidate pacing settings are administered at a candidate lead implantation site. Such a method may comprise: determining a navigation sensor path at a measurement site for each candidate pacing setting at the candidate lead implantation site; and identifying which navigation sensor path corresponds to a most efficient cardiac tissue displacement.