Electrode catheter positioning system
First Claim
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1. A system for determining a position of a catheter, the system comprising:
- an electrode on the catheter;
a plurality of reference electrodes, each reference electrode of the plurality of reference electrodes configured to transmit or receive a signal to or from the electrode; and
a processor configured to;
determine a first distance between a reference electrode of the plurality of reference electrodes and the electrode as a function of an electrical characteristic based on one of the signals;
determine a second distance between the reference electrode and the electrode using an image for viewing the catheter;
determine a correlation between the first distance and the second distance; and
determine the position of the catheter as a function of the electrical characteristic or another electrical characteristic based on the signals, and the determined correlation,wherein the plurality of reference electrodes is not positioned on or in a body surface along three mutually orthogonal axes.
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Abstract
A system for determining a position of a catheter is provided. An electrode is on a catheter. A plurality of reference electrodes are provided. Each of the plurality of reference electrodes are configured to transmit or receive a signal to or from the electrode, respectively. A processor is operable to determine a position of the catheter as a function of an electrical characteristic based on the signals. The plurality of reference electrodes are not positioned on or in a body surface along three mutually orthogonal axes.
37 Citations
13 Claims
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1. A system for determining a position of a catheter, the system comprising:
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an electrode on the catheter; a plurality of reference electrodes, each reference electrode of the plurality of reference electrodes configured to transmit or receive a signal to or from the electrode; and a processor configured to; determine a first distance between a reference electrode of the plurality of reference electrodes and the electrode as a function of an electrical characteristic based on one of the signals; determine a second distance between the reference electrode and the electrode using an image for viewing the catheter; determine a correlation between the first distance and the second distance; and determine the position of the catheter as a function of the electrical characteristic or another electrical characteristic based on the signals, and the determined correlation, wherein the plurality of reference electrodes is not positioned on or in a body surface along three mutually orthogonal axes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for determining a position of a catheter, the system comprising:
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a first electrode and a second electrode on the catheter; a plurality of reference electrodes, each reference electrode of the plurality of reference electrodes configured to transmit or receive a signal to or from the first electrode and the second electrode, respectively; and a processor configured to determine a position of the catheter as a function of a voltage potential between the second electrode and one reference electrode of the plurality of reference electrodes when the first electrode and another electrode of the plurality of reference electrodes are transmitting and receiving the signal, respectively. - View Dependent Claims (10, 11, 12, 13)
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Specification