Intracardiac 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;
determining location information for the three or more sets of current-injecting electrodes on the first catheter; and
determining a position of each of one or more of the measuring electrodes on the one or more additional catheters relative to the first catheter based on the measured signals from the one or more measuring electrodes and the location information.
2 Assignments
0 Petitions
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
4 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; determining location information for the three or more sets of current-injecting electrodes on the first catheter; and determining a position of each of one or more of the measuring electrodes on the one or more additional catheters relative to the first catheter based on the measured signals from the one or more measuring electrodes and the location information. - View Dependent Claims (2, 3)
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4. 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 a first electrical signal at a measuring electrode on the first catheter, and measuring a second electrical signal at a measuring electrode on an additional catheter inserted into the organ in the patient'"'"'s body; determining location information for the three or more sets of current-injecting electrodes on the first catheter; and determining the position of the measuring electrode on the additional catheter relative to the first catheter based on the first and second electrical signals and the location information.
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Specification