Detection of lead electrode dislodgement using cavitary electrogram
AssigneeLambda Nu Technology LLC
InventorCharles Swerdlow
Life of this patent
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Abstract
Methods and systems for identifying dislodgement of an electrode, operably coupled to an implanted medical device, from fixation with the endocardium of a chamber of the heart of a patient can include obtaining a test electrogram, and measuring at least two parameters indicating a cavitary electrogram and taking an action, such as generating an electrode dislodgement alert and/or configuring the implanted medical device to disable therapy, when the cavitary electrogram is indicated. In embodiments, the two parameters include a test positive component magnitude and a test negative component magnitude. In embodiments, the test component magnitudes are compared to baseline component magnitudes determined from a baseline electrogram.
Claims25
A method of identifying dislodgement of an electrode from fixation with the endocardium of a chamber of the heart of a patient, the electrode being operably coupled to an implanted medical device, the method comprising:
- obtaining a test electrogram for the electrode;
- using a processor to:
- determine at least two parameters of the test electrogram indicative of fixation of the electrode with the endocardium;
- and
- determine whether a cavitary electrogram is indicated based on the at least two parameters;
- and
- performing at least one action when the cavitary electrogram is indicated.
A system for identifying dislodgement of an electrode from fixation with the endocardium of a chamber of the heart of a patient, the system comprising:
- an implanted electronic device operably coupled to the electrode;
- a dislodgement detection engine, in data communication with the implanted electronic device, comprising—
- a memory configured to store a test electrogram for the electrode, and
- a processor configured to—
- determine at least two parameters of the test electrogram indicative of fixation of the electrode with the endocardium, and
- determine whether a cavitary electrogram is indicated based on the at least two parameters, and
- perform at least one action when the cavitary electrogram is indicated.
Dependencies are inferred from the claim text.