Apparatus and Method for Catheter Navigation and Tip Location

摘要

Devices and methods obtain and use endovascular electrograms in a number of clinical applications and settings. In one embodiment, methods for triggering analysis of an endovascular ECG waveform are based on the detection of a peak in a skin-based ECG waveform in order to determine a location of an indwelling medical device, such as a catheter. In another embodiment, the position of a catheter or other medical device within the vasculature can be determined by analysis of the energy profile of a detected P-wave. In yet other embodiments, magnetic connecting devices are used for establishing an operable connection through a sterile field.

主权项

1. A method for locating an indwelling medical device within a body of a patient, the method comprising:
detecting a P-wave of an ECG waveform via an electrode associated with the medical device, the electrode sensing an endovascular ECG signal via a conductive path into the body of the patient; calculating at least one of an amount of positive amplitude of the P-wave and an amount of negative amplitude of the P-wave; and determining a position of a portion of the indwelling medical device based on the calculated amount of at least one of the positive amplitude and the negative amplitude of the P-wave.