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Apparatus and method for catheter navigation and tip location

  • US 9,125,578 B2
  • Filed: 02/02/2011
  • Issued: 09/08/2015
  • Est. Priority Date: 06/12/2009
  • Status: Active Grant
First Claim
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1. A method for locating an indwelling medical device within a body of a patient, the method comprising:

  • detecting a first peak in a first ECG waveform;

    triggering analysis of a second ECG waveform when the first peak is detected;

    detecting a second peak in the second ECG waveform, the second peak including a peak of a P-wave; and

    determining a position of a portion of the indwelling medical device based on a characteristic of the second peak, including determining the portion of the indwelling medical device to be above and moving toward a sino-atrial node of a heart of the patient when an amplitude of the P-wave is positive and is increasing in positive amplitude.

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