Medical devices for mapping cardiac tissue
First Claim
1. A system for mapping the electrical activity of the heart, the system comprising:
- a catheter shaft, wherein a plurality of electrodes is coupled thereto, and wherein the plurality of electrodes includes a first electrode and a second electrode;
a processor, wherein the processor is configured to;
receive a first signal corresponding to the first electrode and a second signal corresponding to the second electrode, wherein collecting the first and second signals occurs over a time period;
generate a first time-frequency distribution corresponding to the first signal;
identify a first dominant frequency value occurring at a first dominant frequency and a first time point;
generate a second time-frequency distribution corresponding to the second signal;
identify a second dominant frequency value occurring at a second dominant frequency and a second time point;
determine an attraction point, wherein the attraction point is defined when the first dominant frequency value substantially relates to the second dominant frequency value;
identify a frequency interval that includes the determined attraction point, wherein the frequency interval includes the first and the second dominant frequency values, and wherein the first dominant frequency value substantially relates to the second dominant frequency value over the frequency interval; and
output the identified frequency interval to a visual display.
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Accused Products
Abstract
Medical devices and methods for making and using medical devices are disclosed. An example system for mapping the electrical activity of the heart includes a catheter shaft. The catheter shaft includes a plurality of electrodes including a first electrode and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to the first electrode and a second signal corresponding to the second electrode. Collecting the first and second signals occurs over a time period. The processor is also capable of generating a first time-frequency distribution corresponding to the first signal, identifying a first dominant frequency value occurring at a first dominant frequency and a first time point, generating a second time-frequency distribution corresponding to the second signal, identifying a second dominant frequency value occurring at a second dominant frequency and a second time point and determining an attraction point.
30 Citations
19 Claims
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1. A system for mapping the electrical activity of the heart, the system comprising:
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a catheter shaft, wherein a plurality of electrodes is coupled thereto, and wherein the plurality of electrodes includes a first electrode and a second electrode; a processor, wherein the processor is configured to; receive a first signal corresponding to the first electrode and a second signal corresponding to the second electrode, wherein collecting the first and second signals occurs over a time period; generate a first time-frequency distribution corresponding to the first signal; identify a first dominant frequency value occurring at a first dominant frequency and a first time point; generate a second time-frequency distribution corresponding to the second signal; identify a second dominant frequency value occurring at a second dominant frequency and a second time point; determine an attraction point, wherein the attraction point is defined when the first dominant frequency value substantially relates to the second dominant frequency value; identify a frequency interval that includes the determined attraction point, wherein the frequency interval includes the first and the second dominant frequency values, and wherein the first dominant frequency value substantially relates to the second dominant frequency value over the frequency interval; and output the identified frequency interval to a visual display. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for mapping the electrical activity of the heart, the system comprising:
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a catheter shaft; a plurality of electrodes coupled to the catheter shaft; and a processor coupled to the catheter shaft, wherein the processor is configured to; receive a plurality of signals corresponding to signals sensed by the plurality of electrodes; generate a time-frequency distribution for each of the plurality of signals; identify a common dominant frequency of more than one of the plurality of electrodes, wherein the common dominant frequency occurs at a common dominant time point common to the one or more of the plurality of electrodes, and wherein to identify a common dominant frequency includes determining an attraction point, wherein the attraction point is defined when the common dominant frequency characteristic, the common dominant frequency and the common dominant time point are substantially equivalent; and create a visual display corresponding to the common dominant frequency. - View Dependent Claims (13, 14, 15)
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16. A method for mapping the electrical activity of the heart, the method comprising:
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collecting a first signal corresponding to the first electrode and a second signal corresponding to the second electrode, wherein collecting the first and second signals occurs over a time period, and wherein the first and second signals are collected with a catheter having a plurality of electrodes; generating a first time-frequency distribution corresponding to the first signal; identifying a first dominant frequency value occurring at a first dominant frequency and a first time point; generating a second time-frequency distribution corresponding to the second signal; identifying a second dominant frequency value occurring at a second dominant frequency and a second time point; determining an attraction point, wherein the attraction point is defined when the first dominant frequency value substantially relates to the second dominant frequency value; identifying a time interval, wherein the time interval includes the first and second time points, and wherein the first dominant frequency value substantially relates to the second dominant frequency value over the time interval; and outputting the determined attraction point and the identified time interval to a visual display. - View Dependent Claims (17, 18, 19)
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Specification