Real-time monitoring and mapping of ablation lesion formation in the heart
First Claim
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1. A method for ablating tissue in a heart of a subject and mapping a level of ablation of the tissue during an ablation procedure, comprising:
- applying a local treatment to the heart at a plurality of sites designated for ablation;
sensing at each respective site a parameter that is indicative of a level of ablation at the site;
displaying a map of the heart;
designating, on the map, during the ablation procedure, indications of the respective levels of ablation at the sites, responsive to the respective sensed parameters, andcalculating a weighted average of levels of ablation at each respective site and at secondary sites in a vicinity of each respective site, such that the weighting of each secondary site decreases as the distance of the secondary site from each respective site increases.
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Abstract
A method is provided for ablating tissue in a heart of a subject during an ablation procedure. The method includes applying a local treatment to the heart at a plurality of sites designated for ablation. At each respective site, a parameter is sensed that is indicative of a level of ablation at the site. The method preferably includes displaying a map of the heart, and designating, on the map, during the ablation procedure, indications of the respective levels of ablation at the sites, responsive to the respective sensed parameters.
271 Citations
86 Claims
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1. A method for ablating tissue in a heart of a subject and mapping a level of ablation of the tissue during an ablation procedure, comprising:
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applying a local treatment to the heart at a plurality of sites designated for ablation; sensing at each respective site a parameter that is indicative of a level of ablation at the site; displaying a map of the heart; designating, on the map, during the ablation procedure, indications of the respective levels of ablation at the sites, responsive to the respective sensed parameters, and calculating a weighted average of levels of ablation at each respective site and at secondary sites in a vicinity of each respective site, such that the weighting of each secondary site decreases as the distance of the secondary site from each respective site increases. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for ablating tissue in an organ of a subject, and mapping a level of ablagtion of the tissue during an ablation procedure comprising:
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applying a local treatment to the organ at a plurality of sites designated for ablation; sensing at each respective site a parameter that is indicative of a level of ablation at the site; displaying a map of the organ; designating, on the map, during the ablation procedure, indications of the respective levels of ablation at the sites, responsive to the respective sensed parameters, and calculating a weighted average of levels of ablation at each respective site and at secondary sites in a vicinity of each respective site, such that the weighting of each secondary site decreases as the distance of the secondary site from each respective site increases. - View Dependent Claims (24, 25, 26)
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27. Apparatus for ablating tissue in a heart of a subject during an ablation procedure, comprising:
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a probe, adapted to be inserted into the heart; an ablation device, adapted to apply a local treatment to the heart so as to ablate tissue of the heart; at least one sensor, adapted to sense a parameter that is indicative of a level of ablation; a display monitor; and a computer, adapted to; drive the ablation device to apply the local treatment to the heart at a plurality of sites designated for ablation, receive respective sensed parameters from the sensor, sensed when the sensor is located at or adjacent to the plurality of sites designated for ablation, display on the display monitor a map of the heart, designate, on the map, during the ablation procedure, indications of the respective levels of ablation at the sites, responsive to the respective sensed parameters, and calculate a weighted average of levels of ablation at each respective site and at secondary sites in a vicinity of each respective site, such that the weighting of each secondary site decreases as the distance of the secondary site from each respective site increases. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. Apparatus for ablating tissue in an organ of a subject during an ablation procedure, comprising:
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a probe, adapted to be inserted into the organ; an ablation device, adapted to apply a local treatment to the organ so as to ablate tissue of the organ; at least one sensor, adapted to sense a parameter that is indicative of a level of ablation; a display monitor; and a computer, adapted to; drive the ablation device to apply the local treatment to the organ at a plurality of sites designated for ablation, receive respective sensed parameters from the sensor, sensed when the sensor is located at or adjacent to the plurality of sites designated for ablation, display on the display monitor a map of the organ, and designate, on the map, during the ablation procedure, indications of the respective levels of ablation at the sites, responsive to the respective sensed parameters, and calculate a weighted average of levels of ablation at each respective site and at secondary sites in a vicinity of each respective site, such that the weighting of each secondary site decreases as the distance of the secondary site from each respective site increases. - View Dependent Claims (57, 58, 59)
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60. Apparatus for ablating tissue in a heart of a subject during an ablation procedure, comprising:
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a probe, adapted to be inserted into the heart; an ablation device, adapted to apply a local treatment to the heart so as to ablate tissue of the heart; at least one ablation sensor, adapted to be fixed to the probe and to sense a parameter that is indicative of a level of ablation; a position sensor, adapted to be fixed to the probe and to generate position sensor signals; a display monitor; and a computer, adapted to; drive the ablation device to apply the local treatment to the heart at a plurality of sites designated for ablation, receive respective sensed parameters from the ablation sensor, sensed when the ablation sensor is located at or adjacent to the plurality of sites designated for ablation, receive respective position sensor signals from the position sensor and, responsive thereto, determine respective locations of the sites, when the position sensor is respectively located at or adjacent to the plurality of sites designated for ablation, display on the display monitor a map of the heart, and designate, on the map, during the ablation procedure, indications of the respective levels of ablation at the sites, responsive to the respective sensed parameters and to the respective determined locations, and calculate a weighted average of levels of ablation at each respective site and at secondary sites in a vicinity of each respective site, such that the weighting of each secondary site decreases as the distance of the secondary site from each respective site increases. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86)
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Specification