Devices and Methods for Endovascular Electrography
AssigneeBard Access Systems, Inc.
InventorSorin Grunwald
Life of this patent
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Abstract
A method for positioning an endovascular device in or near the heart using electrocardiogram (ECG) signals. The method includes receiving an endovascular ECG signal including a plurality of waveforms, processing the endovascular ECG signal to calculate a P-wave amplitude and a spectral power for each predetermined time period, determining a maximum P-wave amplitude and an associated maximum spectral power, associating the maximum P-wave amplitude and the maximum spectral power with a predetermined location in or near the heart, calculating a location based on a ratio of the P-wave amplitude to the maximum P-wave amplitude and a ratio of the spectral power to the maximum spectral power, and displaying the location to a user.
Claims17
A computer-based method for positioning an endovascular device in or near the heart using electrocardiogram (ECG) signals, comprising:
- receiving an endovascular ECG signal, associated with an endovascular device, including a plurality of waveforms, each waveform having at least a P-wave component;
- processing the endovascular ECG signal, over a plurality of predetermined time periods, to calculate a P-wave amplitude and a spectral power for each predetermined time period;
- determining a maximum P-wave amplitude from the plurality of P-wave amplitudes, and an associated maximum spectral power from the plurality of spectral powers;
- associating the maximum P-wave amplitude and the maximum spectral power with a predetermined location in or near the heart;
- calculating a location of the endovascular device, for each predetermined time period, based on a ratio of the P-wave amplitude to the maximum P-wave amplitude and a ratio of the spectral power to the maximum spectral power;
- and
- displaying the location of the endovascular device to a user.
Dependencies are inferred from the claim text.