Apparatus and method to mitigate cardiac motion and respiratory motion on geometric measurements of cardiac electrodes
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Publication Number
US-12507958-B1
Publication Date
2025-12-30
Expiration Date
Abstract
An apparatus and method to mitigate cardiac motion and respiratory motion on geometric measurements of cardiac electrodes. The apparatus includes at least a processor and a memory communicatively connected to the at least a processor configured to receive the at least a position signal comprising a first, second, and third spatial coordinate, and compensate, using a cardiac compensator and respiratory compensator, for respiratory motion, wherein compensating for the respiratory motion comprises calculating at least a velocity signal, using the at least a position signal, extracting, using the cardiac compensator, cardiac motion from the at least a position signal as a function of the at least a position signal and the at least a velocity signal, determining, using the respiratory compensator, a respiratory phase, and extracting the respiratory motion as a function of the respiratory phase.
Core Innovation
The patent describes an apparatus and method for mitigating cardiac motion and respiratory motion in geometric measurements of cardiac electrodes. An intracardiac catheter includes an electrode that detects a cardiac phenomenon and outputs a potential signal, while a localization system detects a position signal representing catheter location. A computing device processes the position signal to compensate for motion affecting the electrode geometry.
To distinguish the motion components, the system derives a velocity signal from the position signal and uses the position and velocity signals to extract cardiac motion. It determines respiratory phase by analyzing the rate of change of position values and extracts respiratory motion according to that phase. The described processing includes position-envelope analysis and acquisition during expiration, with the stated aim of reducing cardiac and respiratory artifacts in three-dimensional electrode geometry.
Claims Coverage
The two independent claims are claim 1, directed to an apparatus, and claim 15, directed to a method. The claims cover two inventive features: an apparatus configured to compensate for cardiac and respiratory motion, and a method for performing that compensation.
Apparatus for motion compensation
Claim 1 recites an intracardiac catheter with an electrode that detects a cardiac phenomenon and outputs a potential signal, a localization system that detects a catheter position signal, and a computing device configured to mitigate cardiac and respiratory motion in geometric measurements of cardiac electrodes.
Method for motion compensation
Claim 15 recites detecting a cardiac phenomenon with an intracardiac catheter and receiving a three-dimensional position signal for the catheter. The method calculates a velocity signal, extracts cardiac motion using the position and velocity signals, determines respiratory phase by analyzing the rate of change of position values, and extracts respiratory motion as a function of that phase.
The independent claims cover apparatus and method forms of the same motion-compensation approach, using position and velocity signals to extract cardiac motion and position changes to determine respiratory phase and extract respiratory motion.
Stated Advantages
More reliable, smoother cardiac surfaces for displaying electrophysiology data.
Documented Applications
Electrophysiology surface mapping, including displaying electrophysiology data on cardiac surfaces.
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