Intracardiac EGM signals for beat matching and acceptance
First Claim
1. A system for providing information about a patient'"'"'s heart, the system comprising:
- one or more catheters that receive intracardiac signals from electrical activity of the heart over one or more heart beat cycles;
an electronic processor coupled to the one or more catheters and configured to;
receive the intracardiac signals from the one or more catheters;
preprocess the intracardiac signals to provide preprocessed signals, wherein each of the intracardiac signals is preprocessed to provide a corresponding preprocessed signal;
compare the preprocessed signals to a set of signals to determine a degree of similarity between each of the preprocessed signals and the set of signals;
determine whether to accept one or more beats of the intracardiac signals into an existing cardiac map based on the degree of similarity;
receive an individual threshold value for each signal channel of signal channels for the set of signals;
provide a master threshold value;
determine a dynamic threshold value for each of the signal channels based on a combination of the individual threshold value for the signal channel and the master threshold value;
compare each of the preprocessed signals to the set of signals to obtain a comparison value for each of the signal channels; and
compare the comparison value for each of the signal channels to the dynamic threshold value for each of the signal channels to determine whether a beat of the intracardiac signals is to be accepted into an existing cardiac map; and
a display that displays a result of the comparison such that a user can switch between adding the beats of the intracardiac signals to a current cardiac map and adding the beats of the intracardiac signals to another cardiac map based on the comparison.
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Accused Products
Abstract
A system for providing information about a patient'"'"'s heart, the system including one or more catheters that receive intracardiac signals from electrical activity of the heart over one or more heart beat cycles and an electronic processor coupled to the one or more catheters. The electronic processor to: receive the intracardiac signals from the one or more catheters; preprocess the intracardiac signals to provide preprocessed signals, wherein each of the intracardiac signals is preprocessed to provide a corresponding preprocessed signal; and compare the preprocessed signals to a set of signals to determine a degree of similarity between each of the preprocessed signals and the set of signals.
178 Citations
14 Claims
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1. A system for providing information about a patient'"'"'s heart, the system comprising:
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one or more catheters that receive intracardiac signals from electrical activity of the heart over one or more heart beat cycles; an electronic processor coupled to the one or more catheters and configured to; receive the intracardiac signals from the one or more catheters; preprocess the intracardiac signals to provide preprocessed signals, wherein each of the intracardiac signals is preprocessed to provide a corresponding preprocessed signal; compare the preprocessed signals to a set of signals to determine a degree of similarity between each of the preprocessed signals and the set of signals; determine whether to accept one or more beats of the intracardiac signals into an existing cardiac map based on the degree of similarity; receive an individual threshold value for each signal channel of signal channels for the set of signals; provide a master threshold value; determine a dynamic threshold value for each of the signal channels based on a combination of the individual threshold value for the signal channel and the master threshold value; compare each of the preprocessed signals to the set of signals to obtain a comparison value for each of the signal channels; and compare the comparison value for each of the signal channels to the dynamic threshold value for each of the signal channels to determine whether a beat of the intracardiac signals is to be accepted into an existing cardiac map; and a display that displays a result of the comparison such that a user can switch between adding the beats of the intracardiac signals to a current cardiac map and adding the beats of the intracardiac signals to another cardiac map based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for mapping a patient'"'"'s heart, comprising:
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receiving intracardiac signals from electrical activity of the heart over one or more heart beat cycles at one or more catheters; receiving the intracardiac signals at an electronic processor that is coupled to the one or more catheters; preprocessing the intracardiac signals, by the electronic processor, to provide preprocessed signals, wherein each of the intracardiac signals is preprocessed to provide a corresponding preprocessed signal; comparing the preprocessed signals, by the electronic processor, to a set of signals to determine a degree of similarity between each of the preprocessed signals and the set of signals; determining whether to accept the intracardiac signals into an existing cardiac map based on the degree of similarity, wherein preprocessing the intracardiac signals includes transforming each of the intracardiac signals via a transform function, and applying a close operation to reduce noise in the preprocessed signals, and comparing the preprocessed signals comprises; receiving individual threshold values for each signal channel of signal channels for the set of signals; setting a master threshold value; providing dynamic threshold values based on the individual threshold values and the master threshold value; comparing the preprocessed signals to the set of signals to obtain comparison values for the preprocessed signals; and comparing the comparison values to the dynamic threshold values to determine whether a beat of the intracardiac signals is to be accepted into an existing cardiac map; and displaying a result of the comparison such that a user can switch between adding the beats of the intracardiac signals to a current cardiac map and adding the beats of the intracardiac signals to another cardiac map based on the comparison. - View Dependent Claims (12, 13, 14)
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Specification