Impedance based anatomy generation
First Claim
Patent Images
1. A method comprising:
- inserting a catheter into a heart, the catheter comprising three or more electrodes;
causing current to flow between at least some of the three or more electrodes and measuring an electrical signal, generated from the current flow, at each of one or more of the three or more electrodes;
determining a representation of a chamber anatomy structure of at least a portion of the heart based on the measured electrical signals; and
displaying at least a portion of the determined representation of the chamber anatomy structure with a first visual indicia indicative of areas having a distortion field and a confidence measure satisfying a threshold and a second visual indicia indicative of areas having a distortion field and a confidence measure that does not satisfy the threshold, the confidence measure being based at least in part on a proximity of the three or more electrodes on the catheter to a portion of the surface of the heart.
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Abstract
Methods and systems for the determination and representation of a chamber anatomy are disclosed herein.
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Citations
34 Claims
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1. A method comprising:
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inserting a catheter into a heart, the catheter comprising three or more electrodes; causing current to flow between at least some of the three or more electrodes and measuring an electrical signal, generated from the current flow, at each of one or more of the three or more electrodes; determining a representation of a chamber anatomy structure of at least a portion of the heart based on the measured electrical signals; and displaying at least a portion of the determined representation of the chamber anatomy structure with a first visual indicia indicative of areas having a distortion field and a confidence measure satisfying a threshold and a second visual indicia indicative of areas having a distortion field and a confidence measure that does not satisfy the threshold, the confidence measure being based at least in part on a proximity of the three or more electrodes on the catheter to a portion of the surface of the heart. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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inserting a catheter into a heart, the catheter comprising three or more electrodes; for each of a plurality of catheter locations, causing current to flow between at least some of the three or more electrodes and measuring an electrical signal, generated from the current flow, at each of one or more of the three or more electrodes; generating a representation of a chamber anatomy structure of at least a portion of the heart based on locations of the catheter and the electrical signal measurements, the generation being based at least in part on a data selection criteria associated with a proximity of the three or more electrodes on the catheter to a portion of the surface of the heart; and displaying at least a portion of the determined representation of the chamber anatomy structure. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
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a catheter comprising two or more electrodes configured to inject a current and to measure electrical signals from the injected current; a processing unit configured to determine a representation of a chamber anatomy structure of at least a portion of the heart based on the measured electrical signals; and a display unit configured to send a signal to a display device to cause the display device to display at least a portion of the determined representation of the chamber anatomy structure with a first visual indicia indicative of areas having a distortion field and confidence measure satisfying a threshold and a second visual indicia indicative of areas having a distortion field and confidence measure that does not satisfy the threshold, the confidence measure being based at least in part on a proximity of electrodes on the catheter to a portion of the surface of the heart. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A system comprising:
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a catheter comprising two or more electrodes configured to inject a current and to measure electrical signals from the injected current; a processing unit configured to determine a representation of a chamber anatomy structure of at least a portion of the heart based on locations of the catheter and the electrical signal measurements, the generation being based at least in part on a data selection criteria associated with differences between an electric field in the presence of an inhomogeneity and an homogeneous medium, and a proximity of the two or more electrodes on the catheter to a portion of the surface of the heart; and a display unit configured to send a signal to cause a display device to display at least a portion of the determined representation of the chamber anatomy structure. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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Specification