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US 2026/0131155 A1Published application
Cardiac resynchronization therapy mode switching using mechanical activity
AssigneeMedtronic, Inc.
InventorSubham Ghosh
Life of this patent
Estimating the term…
Abstract
A method includes determining whether electrical activity is indicative of atrial fibrillation, determining whether mechanical activity is indicative of atrial fibrillation, and adjusting a pacing parameter or mode based on whether the electrical activity and the mechanical activity are indicative of atrial fibrillation. The electrical activity may be detected based on a far-field measurement. The method may be performed using a leadless implantable medical device.
Claims20
A leadless implantable medical device comprising:
- a housing implantable in the right atrium of a patient's heart;
- a first electrode coupled to the housing and implantable from the triangle of Koch region of the right atrium to one or both of deliver cardiac therapy to and
- sense electrical activity of at least the left ventricle (LV) in the basal region, septal region, or basal-septal region of the left ventricular myocardium of the patient's heart;
- a second electrode coupled to the housing to sense electrical activity of one or both atria of the patient's heart;
- a motion sensor within the housing to sense mechanical activity of the patient's heart;
- and
- a controller within the housing and operably coupled to the first electrode, second electrode, and the motion sensor, the controller configured to:
- deliver pacing to at least the left ventricle using the first electrode based on sensing electrical activity of one or more atria and one or more ventricles;
- determine that the electrical activity of one or both atria sensed by the second electrode is indicative of atrial fibrillation;
- in response to determining that the electrical activity of one or both atria is indicative of atrial fibrillation, determine that mechanical activity of the patient's heart sensed by the motion sensor does not represents an atrial contraction;
- and
- in response to determining that the mechanical activity of the patient's heart does not represent the atrial contraction, deliver inhibited pacing using the first electrode based on sensing electrical activity of only one or both ventricles of the patient's heart.
9 more elements
A method comprising:
- sensing electrical activity of one or more atria and one or more ventricles of a patient's heart using a first electrode and a second electrode coupled to a housing of a leadless implantable medical device implanted in the right atrium of the patient, wherein the first electrode is implanted from the triangle of Koch region of the right atrium to one or both of deliver cardiac therapy to and sense electrical activity of at least the left ventricle (LV) in the basal region, septal region, or basal-septal region of the left ventricular myocardium of the patient's heart;
- sensing mechanical activity of the patient's heart using a motion sensor;
- delivering pacing to at least the left ventricle using the first electrode based on sensing electrical activity of one or more atria and one or more ventricles;
- determining that the electrical activity of one or both atria sensed by the second electrode is indicative of atrial fibrillation;
- in response to determining that the electrical activity of one or both atria is indicative of atrial fibrillation, determining that mechanical activity of the patient's heart sensed by the motion sensor does not represents an atrial contraction;
- and
- in response to determining that the mechanical activity of the patient's heart does not represent the atrial contraction, delivering inhibited pacing using the first electrode based on sensing electrical activity of only one or both ventricles of the patient's heart.
4 more elements
A leadless implantable medical device comprising:
- a housing implantable in the right atrium of a patient's heart;
- a first electrode coupled to the housing and implantable from the triangle of Koch region of the right atrium to one or both of deliver cardiac therapy to and sense electrical activity of at least the left ventricle (LV) in the basal region, septal region, or basal-septal region of the left ventricular myocardium of the patient's heart;
- a second electrode coupled to the housing to sense electrical activity of one or both atria of the patient's heart;
- a motion sensor within the housing to sense mechanical activity of the patient's heart;
- and
- a controller within the housing and operably coupled to the first electrode, second electrode, and the motion sensor, the controller configured to:
- deliver pacing to at least the left ventricle using the first electrode based on sensing electrical activity of one or more atria and one or more ventricles;
- deliver inhibited pacing to at least the left ventricle using the first electrode based on sensing electrical activity of only one or both ventricles of the patient's heart in response to determination of atrial fibrillation based on electrical activity of one or both atria sensed by the second electrode being indicative of atrial fibrillation and confirmation of atrial fibrillation based on mechanical activity of the patient's heart sensed by the motion sensor.
5 more elements
Dependencies are inferred from the claim text.