3D Multi-Electrode Catheter Signal Display for Spatial Mapping
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Solution Overview
Problem
Existing systems face challenges in effectively presenting and interpreting the overwhelming number of signals acquired by multi-electrode catheters, particularly during electro-anatomical mapping procedures, as the signals are not correlated to their location on the catheter, requiring significant time for adjustment and filtering.
Innovation Solution
A system utilizing a processor to generate a three-dimensional representation of a multi-electrode catheter, displaying signals in relation to the electrodes' physical positions, allowing users to selectively toggle trace display, and providing a two-dimensional electrocardiogram view for enhanced data interpretation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multi-electrode catheters with many electrodes are used to acquire signals, then measurement precision and data quality are improved, but device complexity and data processing burden increase
Solution Approach 1:
The catheter is divided into multiple splines, with electrodes distributed along each spline. This segmentation allows the system to manage and process signals from many electrodes by organizing them into manageable groups associated with specific anatomical regions or catheter segments, reducing the cognitive burden on operators while maintaining high measurement precision.
2Loss of information
If signals from all electrodes are displayed simultaneously, then complete data coverage is achieved, but ease of operation and interpretation deteriorate due to data overload
Solution Approach 1:
The system provides dynamic control over signal display, allowing operators to selectively enable or disable traces from individual electrodes or groups of electrodes. This dynamic adjustment capability enables operators to start with all signals visible for comprehensive coverage, then progressively filter out less relevant signals to reduce visual clutter and improve interpretability during different stages of the mapping procedure.
Solution Approach 2:
The system initially presents all available signal data (excessive action) to ensure complete information coverage, but includes functionality to selectively display only subsets of signals (partial action) when needed. This approach allows operators to have access to the full dataset while being able to focus on specific signals of interest, balancing comprehensive data coverage with ease of interpretation.
3Device complexity
If traditional 2D display formats are used for electrogram signals, then device complexity is kept simple, but loss of information increases due to inability to correlate signals with electrode locations
Solution Approach 1:
The system transitions from traditional two-dimensional display formats to a three-dimensional representation that incorporates spatial information. The 3D display shows the catheter geometry and electrode positions in space, with signal traces overlaid or associated with their respective electrode locations. This dimensional enhancement preserves all spatial correlation information while maintaining intuitive visualization, allowing operators to understand both the anatomical context and electrical signals simultaneously.
Data Source
AI summary
A system includes an interface and a processor. The interface is configured to receive, from at least first and second electrodes of a catheter, first and second signals, respectively, which are acquired over at least a time interval by the at least first and second electrodes at an organ of a patient. The processor is configured to produce a three-dimensional (3D) representation of at least a portion of the catheter and first and second traces corresponding to the first and second signals, and the first and second traces are displayed in a 3D space relative to physical positions of the first and second electrodes on the catheter, respectively.