Omnipolar Cardiac Mapping for Orientation-Independent Voltage Sensing
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Solution Overview
Problem
Existing electrophysiology catheters face challenges with directional dependence and electrode spacing irregularity, leading to suboptimal data collection and erroneous signal processing during voltage mapping and other tissue sensing procedures.
Innovation Solution
The use of Orientation Independent Sensing (OIS) and Omnipolar mapping Technology (OT) systems and methods, which normalize differential electric field vectors to reduce errors, generate direction-independent reference triggers, and provide enhanced user interfaces for accurate cardiac system data analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If bipolar-based voltage mapping is used, then directional information can be obtained, but directional dependence and electrode spacing irregularity cause measurement errors and suboptimal data collection
Solution Approach 1:
The patent segments the traditional bipolar measurement approach into multiple unipolar electrode measurements. By using multiple electrodes (at least three) to measure electric potential independently, the system divides the measurement task into multiple redundant measurements that can be processed to eliminate directional dependence and spacing irregularity errors.
Solution Approach 2:
The patent creates a universal measurement system using omnipoles that can function in any spatial orientation. The omnipole configuration allows the same electrode array to perform voltage mapping regardless of its orientation relative to the tissue, making the measurement system universal and independent of directional constraints.
2Ease of operation
If traditional bipolar catheters are used for navigation, then mechanical steering features can be manipulated, but manual manipulation requires significant operator skill and time
Solution Approach 1:
The patent replaces manual mechanical manipulation of the catheter with automated navigation using magnetic fields. Instead of physically steering the catheter through mechanical means, the system uses magnetic actuators to guide the catheter tip to the desired location, eliminating the need for manual manipulation and reducing operator skill requirements.
3Productivity
If bipolar electrodes are used for mapping, then voltage data can be collected, but directional dependence leads to erroneous signal processing
Solution Approach 1:
The patent implements feedback through the computation of omnipole voltages from multiple unipolar measurements. The system continuously processes the raw unipolar signals, computes the directional-independent omnipole voltages, and uses this feedback to correct for any measurement errors or variations, ensuring accurate signal processing regardless of electrode orientation.
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
These systems improve data accuracy by reducing directionality-based errors and common mode far-field noise, enabling reliable and consistent cardiac mapping and therapeutic procedures.
Implementation Method 1
determining a cardiac system parameter by performing a vector operation comprising operating, using an operator, upon (i) m-hat or a vector perpendicular thereto m-hat-perp and (ii) a diagnostic vector, wherein the diagnostic vector is generated using measured cardiac electrogram signals
Data Source
AI summary
The disclosure relates generally to applications of Orientation Independent Sensing (OIS) and Omnipolar mapping Technology (OT) to various system, device and method embodiments as recited herein. Similarly, systems and methods suitable for supporting OIS and OT systems and methods are disclosed. Further, OIS and OT implementations that provide end user interfaces, diagnostic indicia and visual displays generated, in part, based on measured data or derived from measured data are also disclosed. Embodiments also describe applying optimization techniques to determine the greatest voltage difference of a local electric field associated with an electrode-based diagnostic procedure and a vector representation thereof. Various graphic user interface related features are also described to facilitate orientation and electrode clique signal display.