Leadless cardiac pacemaker providing cardiac resynchronization therapy

Abstract

Methods, systems and devices for providing cardiac resynchronization therapy (CRT) to a patient using a leadless cardiac pacemaker (LCP) implanted in or proximate the left ventricle of a patient. A setup phase is used to establish parameters in the therapy delivery. In operation, the method and / or device will sense at least one non-paced cardiac cycle to determine a native R-R interval, and then delivers a synchronization pace at an interval less than the native R-R interval followed by a plurality of pace therapies delivered at the R-R interval or a modification thereof.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit and priority of U.S. Provisional Patent Application Serial No. 62 / 424,582, filed November 21, 2016, and entitled "LCP BASED PREDICTIVE TIMINGFOR CARDIAC RESYNCHRONIZATION," the disclosure of which is incorporated herein by reference. Background technique [0003] Cardiac resynchronization therapy (CRT) alters the electrical activation and contraction of the heart chambers to improve pumping efficiency. Benefits may include increased exercise capacity and reduced hospitalization and mortality rates. More specifically, CRT devices operate by affecting the timing of the contraction of one or more heart chambers relative to one or more other heart chambers. For example, the contraction of one or more ventricles may be timed relative to the contraction of the atria, or the contraction of the left and right ventricles may be timed relative to each other. [0004] A "fused" beat occurs when...

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Problems solved by technology

[0008] Among other things, the inventors have recognized that the problem to be solved is that, for systems using one or more ventricular LCP devices, the absence of intracardiac leads makes detection of atrial events for CRT purposes potentially difficult

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