APPARATUS AND METHOD FOR CATHETER NAVIGATION AND TIP LOCATION
First Claim
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; and
determining a position of a portion of the indwelling medical device based on a characteristic of the second peak.
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Accused Products
Abstract
Devices and methods for obtaining and using endovascular electrograms in a number of clinical applications and settings are disclosed. In one embodiment, methods are disclosed for triggering analysis of an endovascular ECG waveform 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 for establishing an operable connection through a sterile field are disclosed.
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Citations
29 Claims
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1. A method for locating an indwelling medical device within a body of a patient, the method comprising:
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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; and determining a position of a portion of the indwelling medical device based on a characteristic of the second peak. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for locating an indwelling medical device within a body of a patient, the method comprising:
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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. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A connecting device for electrically connecting a first conductive component in a sterile field to a second conductive component outside of the sterile field, comprising:
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a body including an electrically conductive surface, the body including a magnetic element such that the electrically conductive surface is magnetic, wherein the second conductive component is electrically connected to the connecting device and wherein the first conductive component is electrically connected to the connecting device by placing a magnetically attractable connector of the first conductive component on the electrically conductive surface without manually touching the electrically conductive surface such that the connector is magnetically secured to the electrically conductive surface.
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22. A connecting device for electrically connecting a first conductive component in a sterile field to a second conductive component outside of the sterile field, comprising:
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a body including a cup-shaped receptacle, an electrically conductive surface being included within the receptacle; and a magnetic element disposed proximate the cup-shaped receptacle, wherein the second conductive component is electrically connected to the connecting device and wherein the first conductive component is electrically connected to the connecting device by inserting an end of a connector of the first conductive component into the cup-shaped receptacle of the connecting device without manually touching the connecting device surface such that the connector is magnetically secured to the electrically conductive surface within the cup-shaped receptacle. - View Dependent Claims (23, 24)
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25. A method for locating an indwelling medical device within a body of a patient encountering arrhythmia, the method comprising:
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detecting at least a portion of 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 portion, an amount of negative amplitude of the P-wave portion, and an amount of electrical energy of the P-wave portion; 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 portion. - View Dependent Claims (26)
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27. A method for locating an indwelling medical device within a body of a patient, the method comprising:
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detecting a skin ECG waveform via a skin-placed electrode; detecting an endovascular 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; displaying a current view of the skin ECG waveform and the endovascular ECG waveform in a first window; and displaying a past view of the skin ECG waveform and the endovascular ECG waveform in a second window. - View Dependent Claims (28, 29)
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Specification