Medical system 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 coupled to the first electrode and the second electrode, the processor configured to;
collect a first signal from the first electrode over a time period;
generate a first time-frequency distribution corresponding to the first signal, wherein the first time-frequency distribution includes a first dominant frequency value representation occurring at one or more first base frequencies; and
apply a filter to at least one of the first signal and a derivative of the first signal to determine whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or more than one first dominant frequency values at more than one base frequencies; and
generate a visual display of at least one of the filtered first signal and the filtered derivative of the first signal indicating whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or more than one first dominant frequency values at more than one base frequencies.
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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 and a second electrode. The system also includes a processor. The processor is capable of collecting a first signal corresponding to a first electrode over a time period and generating a first time-frequency distribution corresponding to the first signal. The first time-frequency distribution includes a first dominant frequency value representation occurring at one or more first base frequencies. The processor is also capable of applying a filter to the first signal or derivatives thereof to determine whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or two or more first dominant frequency values at two or more base frequencies.
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Citations
15 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 coupled to the first electrode and the second electrode, the processor configured to; collect a first signal from the first electrode over a time period; generate a first time-frequency distribution corresponding to the first signal, wherein the first time-frequency distribution includes a first dominant frequency value representation occurring at one or more first base frequencies; and apply a filter to at least one of the first signal and a derivative of the first signal to determine whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or more than one first dominant frequency values at more than one base frequencies; and generate a visual display of at least one of the filtered first signal and the filtered derivative of the first signal indicating whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or more than one first dominant frequency values at more than one base frequencies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for mapping the electrical activity of the heart, the method comprising:
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collecting a first signal corresponding to a first electrode coupled to a catheter over a time period; collecting a second signal corresponding to a second electrode coupled to the catheter over the time period; generating a first time-frequency distribution corresponding to the first signal, wherein the first time-frequency distribution includes a first dominant frequency value representation occurring at one or more first base frequencies; generating a second time-frequency distribution corresponding to the second signal, wherein the second time-frequency distribution includes a second dominant frequency value representation, wherein the second dominant frequency value representation includes one or more second dominant frequency values occurring at one or more second base frequencies; applying a filter to the first signal or derivatives thereof to determine whether the first dominant frequency value representation includes a single first dominant frequency value at a first base frequency or more than one first dominant frequency values at more than one base frequencies; determining an attraction point, wherein the attraction point is defined when the one or more first dominant frequency values substantially relate to the one or more second dominant frequency values; and outputting to a display device a visual display of the attraction point.
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Specification