Beat alignment and selection for cardiac mapping
First Claim
1. A method comprising:
- for each of multiple, different catheter positions in a heart cavity, concurrently measuring signals at one or more catheter electrodes on a catheter in response to electrical activity in the heart cavity and collecting a plurality of additional data signals;
defining a template set comprising information related to the plurality of additional data signals collected during an exemplary beat of interest;
computing criteria for each of the plurality of additional data signals based on a comparison of the plurality of additional data signals and the template set;
synchronizing the signals measured at the different catheter positions with one another according to a heart beat cycle by calculating a single synchronization offset, wherein the single synchronization offset is a time value based on the plurality of the computed criteria and the difference between a marker in the template set and a point in the plurality of additional data signals;
selecting a subset of less than all of the synchronized signals by determining whether to include the signals for a cardiac beat in the subset of less than all of the synchronized signals based on the computed criteria related to the plurality of additional data signals; and
determining physiological information at multiple locations of the endocardium surface based on the measured signals at the different catheter positions by processing the selected subset of the synchronized signals.
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Accused Products
Abstract
A method including: measuring signals at one or more catheter electrodes in response to electrical activity in a heart cavity and collecting additional data signals; defining a template set including information related to the additional data signals; computing criteria for each of the additional data signals based on a comparison of the additional data signals and the template set; synchronizing the measured signals with one another by calculating a single synchronization offset that is a time value based on the computed criteria and the difference between a marker in the template set and a point in the additional data signals; selecting a subset of the synchronized signals by determining whether to include the signals for a heartbeat in the subset based on the computed criteria; and determining physiological information at multiple locations of the endocardium surface based on the measured signals by processing the selected subset.
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Citations
18 Claims
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1. A method comprising:
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for each of multiple, different catheter positions in a heart cavity, concurrently measuring signals at one or more catheter electrodes on a catheter in response to electrical activity in the heart cavity and collecting a plurality of additional data signals; defining a template set comprising information related to the plurality of additional data signals collected during an exemplary beat of interest; computing criteria for each of the plurality of additional data signals based on a comparison of the plurality of additional data signals and the template set; synchronizing the signals measured at the different catheter positions with one another according to a heart beat cycle by calculating a single synchronization offset, wherein the single synchronization offset is a time value based on the plurality of the computed criteria and the difference between a marker in the template set and a point in the plurality of additional data signals; selecting a subset of less than all of the synchronized signals by determining whether to include the signals for a cardiac beat in the subset of less than all of the synchronized signals based on the computed criteria related to the plurality of additional data signals; and determining physiological information at multiple locations of the endocardium surface based on the measured signals at the different catheter positions by processing the selected subset of the synchronized signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification