Electrode displacement determination
First Claim
Patent Images
1. A method comprising:
- generating a baseline signal measurement between multiple intracardiac current injecting electrodes placed in stable internal locations relative to a patient'"'"'s body and one or more measuring electrodes positioned at one or more stable external locations relative to the patient'"'"'s body by;
causing current to flow among the multiple intracardiac current injecting electrodes placed in the stable internal locations relative to the patient'"'"'s body to generate a field in an organ;
in response to the current flow, measuring a signal at the one or more measuring electrodes positioned at the one or more stable external locations relative to the patient'"'"'s body; and
subsequent to generating the baseline signal measurement, determining whether a location of the multiple intracardiac current injecting electrodes relative to the patient'"'"'s body has changed by;
causing current to flow among the multiple intracardiac current injecting electrodes;
in response to the current flow, measuring a signal at the one or more measuring electrodes positioned in stable external locations;
comparing the measured signal to the baseline signal to generate a comparison result; and
determining whether the location of the multiple intracardiac current injecting electrodes has changed based on the comparison result; and
subsequent to generating the baseline signal measurement, in response to the current flow generated by the multiple intracardiac current injecting electrodes, measuring a signal at each of multiple measuring electrodes being different from the one or more measuring electrodes positioned in the stable external locations on a catheter inside the patient'"'"'s body; and
determining a relative location of the catheter based on the signals measured by the multiple measuring electrodes on the catheter.
2 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems for determining whether a location of multiple current injecting electrodes has changed are disclosed herein.
124 Citations
15 Claims
-
1. A method comprising:
-
generating a baseline signal measurement between multiple intracardiac current injecting electrodes placed in stable internal locations relative to a patient'"'"'s body and one or more measuring electrodes positioned at one or more stable external locations relative to the patient'"'"'s body by; causing current to flow among the multiple intracardiac current injecting electrodes placed in the stable internal locations relative to the patient'"'"'s body to generate a field in an organ; in response to the current flow, measuring a signal at the one or more measuring electrodes positioned at the one or more stable external locations relative to the patient'"'"'s body; and subsequent to generating the baseline signal measurement, determining whether a location of the multiple intracardiac current injecting electrodes relative to the patient'"'"'s body has changed by; causing current to flow among the multiple intracardiac current injecting electrodes; in response to the current flow, measuring a signal at the one or more measuring electrodes positioned in stable external locations; comparing the measured signal to the baseline signal to generate a comparison result; and determining whether the location of the multiple intracardiac current injecting electrodes has changed based on the comparison result; and subsequent to generating the baseline signal measurement, in response to the current flow generated by the multiple intracardiac current injecting electrodes, measuring a signal at each of multiple measuring electrodes being different from the one or more measuring electrodes positioned in the stable external locations on a catheter inside the patient'"'"'s body; and determining a relative location of the catheter based on the signals measured by the multiple measuring electrodes on the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A method comprising:
-
positioning multiple current injecting electrodes in stable internal locations relative to the patient'"'"'s body; positioning one or more measuring electrodes in stable external locations relative to the patient'"'"'s body; positioning a catheter that includes one or more measuring electrodes inside the patient'"'"'s body, the one or more measuring electrodes on the catheter being different from the one or more measuring electrodes positioned in the stable external locations; generating a baseline signal measurement between the multiple current injecting electrodes placed in the stable internal locations relative to the patient'"'"'s body and the one or more measuring electrodes positioned at the one or more stable external locations relative to the patient'"'"'s body by; causing current to flow among the multiple current injecting electrodes placed in the stable internal locations relative to the patient'"'"'s body to generate a field in an organ; in response to the current flow, measuring a signal at the one or more measuring electrodes positioned at the one or more stable external locations relative to the patient'"'"'s body; and subsequent to generating the baseline signal measurement, determining whether a location of the multiple current injecting electrodes relative to the patient'"'"'s body has changed by;
causing current to flow among the multiple current injecting electrodes;in response to the current flow, measuring a signal at the one or more measuring electrodes positioned in stable external locations; comparing the measured signal to the baseline signal to generate a comparison result; and determining whether the location of the multiple current injecting electrodes has changed based on the comparison result; and subsequent to generating the baseline signal measurement, in response to the current flow generated by the multiple current injecting electrodes, measuring a signal at each of multiple measuring electrodes on the catheter; and determining a relative location of the catheter based on the signals measured by the multiple measuring electrodes on the catheter.
-
-
15. A method comprising:
-
positioning multiple intracardiac current injecting electrodes inside a patient'"'"'s body and in stable internal locations relative to the patient'"'"'s body; positioning one or more measuring electrodes in stable external locations relative to the patient'"'"'s body; positioning a catheter that includes one or more measuring electrodes inside the patient'"'"'s body, the one or more measuring electrodes on the catheter being different from the one or more measuring electrodes positioned in the stable external locations; generating a baseline signal measurement between the multiple intracardiac current injecting electrodes placed in the stable internal locations relative to the patient'"'"'s body and the one or more measuring electrodes positioned at the stable external locations relative to the patient'"'"'s body by; causing current to flow among the multiple intracardiac current injecting electrodes placed in the stable internal locations relative to the patient'"'"'s body to generate a field in an organ; in response to the current flow, measuring a signal at the one or more measuring electrodes positioned at the stable external locations relative to the patient'"'"'s body; and subsequent to generating the baseline signal measurement, determining whether a location of the multiple intracardiac current injecting electrodes relative to the patient'"'"'s body has changed by; causing current to flow among the multiple intracardiac current injecting electrodes; in response to the current flow, measuring a signal at the one or more measuring electrodes; comparing the measured signal to the baseline signal to generate a comparison result; and determining whether the location of the multiple intracardiac current injecting electrodes has changed based on the comparison result; and subsequent to generating the baseline signal measurement, in response to the current flow generated by the multiple intracardiac current injecting electrodes, measuring a signal at each of multiple measuring electrodes on the catheter; and determining a relative location of the catheter based on the signals measured by the multiple measuring electrodes on the catheter.
-
Specification