Apparatus and method for catheter navigation and tip location
AssigneeBard Access Systems, Inc.
InventorSorin Grunwald
Life of this patent
Estimating the term…
Abstract
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.
Claims28
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.
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 away from a sino-atrial node of a heart of a patient when an amplitude of the P-wave is negative and is increasing in negative amplitude.
Dependencies are inferred from the claim text.