IMD stability monitor
AssigneeMedtronic, Inc.
InventorsMichael A. Reinert, Eric R. Williams, Todd J. Sheldon
Life of this patent
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Abstract
Techniques for determining an attachment stability of leadless pacing device (LPD) implanted within a patient are described. For example, the LPD may detect one or more stability metrics from one or more electrodes of the LPD and/or an activity sensor within the LPD. Based on one or more of these stability metrics, e.g., a mechanical motion of the LPD, a stability module within the LPD may determine the attachment stability of the LPD within the patient. If the attachment stability is insufficient to provide efficacious therapy or indicates at least partial dislodgement of the LPD from tissue, the LPD may wirelessly transmit stability information to an external device. In some examples, the LPD may be implanted within a chamber of the heart.
Claims13
A method comprising:
- detecting two or more stability metrics with a leadless pacing device implanted within a patient;
- and
- determining an attachment stability of the leadless pacing device based on the two or more stability metrics;
- wherein determining the attachment stability comprises comparing two of the two or more stability metrics to each other, the method further comprising:
- comparing a mechanical motion of the leadless pacing device to one or more cardiac events;
- and
- determining the attachment stability to indicate at least partial mechanical dislodgement of the leadless pacing device from patient tissue when the mechanical motion does not correlate to the one or more cardiac events.
A method comprising:
- detecting two or more stability metrics with a leadless pacing device implanted within a patient;
- and
- determining an attachment stability of the leadless pacing device based on the two or more stability metrics, wherein the two or more stability metrics comprise a primary stability metric and a secondary stability metric, and wherein determining the attachment stability comprises:
- detecting the primary stability metric;
- determining that the primary stability metric exceeds a respective specific metric threshold;
- in response to the determination, detecting the secondary stability metric;
- and
- comparing the secondary stability metric to the respective specific metric threshold.
A leadless pacing device comprising:
- two or more electrodes;
- a stability module configured to detect two or more stability metrics and determine an attachment stability of the device based on the two or more stability metrics;
- and
- a housing that encloses the stability module, wherein the two or more electrodes are disposed on the outside of the housing, wherein the stability module is configured to at least one of compare each of the two or more stability metrics to a respective specific metric threshold and compare two of the one or more stability metrics to each other, and wherein the stability module is configured to compare a mechanical motion of the leadless pacing device to one or more cardiac events and determine the attachment stability to indicate at least partial mechanical dislodgement of the device from patient tissue when the mechanical motion does not correlate to the one or more cardiac events.
Dependencies are inferred from the claim text.