Intra-cardiac tracking system
First Claim
1. A method comprising:
- causing, current to flow between each of three or more sets of current-injecting electrodes on a first catheter inserted into an organ in a patient'"'"'s body, the organ having a periphery;
in response to current flow caused by each set of current injecting electrodes, measuring an electrical signal at each of one or more measuring electrodes located on one or more additional catheters inserted into the organ in the patient'"'"'s body; and
determining a position of each of one or more of the measuring electrodes on the one or more additional catheters relative to the current-injecting electrodes on the first catheter based on the measured signals from the one or more measuring electrodes.
2 Assignments
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Accused Products
Abstract
In general, in one aspect, a method is disclosed for determining information about a position of an object. The method includes: (i) causing current to flow between each of three or more sets of current-injecting electrodes on a first catheter inserted into an organ in a patient'"'"'s body, the organ having a periphery (ii) in response to current flow caused by each set of current injecting electrodes, measuring an electrical signal at each of one or more measuring electrodes located on one or more additional catheters inserted into the organ in the patient'"'"'s body and (iii) determining the position of each of one or more of the measuring electrodes on the additional catheters relative to the first catheter based on the measured signals from the one or more measuring electrodes.
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Citations
77 Claims
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1. A method comprising:
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causing, current to flow between each of three or more sets of current-injecting electrodes on a first catheter inserted into an organ in a patient'"'"'s body, the organ having a periphery; in response to current flow caused by each set of current injecting electrodes, measuring an electrical signal at each of one or more measuring electrodes located on one or more additional catheters inserted into the organ in the patient'"'"'s body; and determining a position of each of one or more of the measuring electrodes on the one or more additional catheters relative to the current-injecting electrodes on the first catheter based on the measured signals from the one or more measuring electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 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, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
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73. A system comprising:
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a first catheter configured for insertion into an organ in a patient'"'"'s body and comprising three or more sets of current injecting electrodes; one or more additional catheters configured for insertion into the organ in the patient'"'"'s body and comprising one or more measuring electrodes; an electronic control system coupled to the first catheter and the one or more additional catheters and configured to cause current to flow between each set of current-injecting electrodes and measure an electrical signal in response to the current flow caused by each set of current injecting electrodes at each of the measuring electrodes on the one or more additional catheters; and a processing system coupled to the electronic system and configured to determine the position of the each of one or more of the one or more current measuring electrodes relative to the current-injection electrodes of the first catheter based on the measured signals from the one or more measuring electrodes.
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74. A system comprising:
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a processing system configured for use with; a first catheter configured for insertion into an organ in a patient'"'"'s body and comprising three or more sets of current injecting electrodes; one or more additional catheters configured for insertion into the organ in the patient'"'"'s body and comprising one or more measuring electrodes; and an electronic control system coupled to the first catheter and the one or more additional catheters and configured to cause current to flow between each set of current-injecting electrodes and measure an electrical signal in response to the current flow caused by each set of current injecting electrodes at each of the measuring electrodes on the one or more additional catheters, where in the processing system is configured to be coupled to the electronic system and configured to determine a position of the each of one or more of the one or more current measuring electrodes relative to the current-injecting electrodes on the first catheter based on the measured signals from the one or more measuring electrodes. - View Dependent Claims (75)
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76. A non-transitory computer program product residing on a computer readable medium, the computer program product comprising instructions for causing a computer to:
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cause current to flow between each of three or more sets of current-injecting electrodes on a first catheter inserted into an organ in a patient'"'"'s body, the organ having a periphery; in response to current flow caused by each set of current injecting electrodes, measure an electrical signal at each of one or more measuring electrodes located on one or more additional catheters inserted into the organ in the patient'"'"'s body; and determine a position of each of one or more or the measuring electrodes on the additional catheters relative to the current-injecting electrodes on the first catheter based on the measured signals from the one or more measuring electrodes.
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77. A non-transitory computer program product residing on a computer readable medium, the computer program product comprising instructions for causing a computer to:
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cause current to flow between each set of at least three sets of current-injecting electrodes on a first catheter; receive data relating to a measurement of an electrical signal measured in response to the current flow caused by each set of current injecting electrodes at each of the measuring electrodes on the one or more additional catheters, and determine a position of the each of one or more of the one or more current measuring electrodes relative to the current-injecting electrodes on the first catheter based on the measured signals from the one or more measuring electrodes.
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Specification