Mode switching by a ventricular leadless pacing device
AssigneeMedtronic, Inc.
InventorsTodd J Sheldon, Wade M Demmer
Life of this patent
Estimating the term…
Abstract
In some examples, a leadless pacing device (hereinafter, “LPD”) is configured for implantation in a ventricle of a heart of a patient, and is configured to switch between an atrio-ventricular synchronous pacing mode and an asynchronous ventricular pacing mode in response to detection of one or more sensing events, which may be, for example, undersensing events. In some examples, an LPD is configured to switch from a sensing without pacing mode to an atrio-ventricular synchronous pacing mode in response to determining, for a threshold number of cardiac cycles, a ventricular depolarization was not detected within a ventricular event detection window that begins at an atrial activation event.
Claims9
A system having at least a leadless pacing device, the system comprising:
- means for detecting an electric cardiac signal means for detecting a first atrial activation event based on the electrical cardiac signal;
- means for determining, based on the electrical cardiac signal, a second atrial activation event was not detected within a detection window that begins at the first atrial activation event;
- and
- means for controlling the leadless pacing device to deliver pacing pulses to a ventricle of a heart according to an asynchronous ventricular pacing mode based on the determination that the second atrial activation event was not detected within the detection window.
A system having at least a leadless pacing device, the system comprising:
- means for detecting an electric cardiac signal means for detecting, based on the electrical cardiac signal, an atrial activation event;
- means for determining, based on the electrical cardiac signal, a ventricular sense event was not detected within a ventricular event detection window that begins at the atrial activation event;
- and
- means for controlling the leadless pacing device to switch from a sensing without pacing mode to an atrio-ventricular synchronous pacing mode based on the determination that the ventricular sense event was not detected within the ventricular event detection window by at least controlling the leadless pacing device to deliver a pacing pulse to a heart according to the atrio-ventricular synchronous pacing mode.
A non-transitory computer-readable medium comprising instructions that, when executed by a processing module, cause the processing module to:
- detect, based on an electrical cardiac signal, an atrial activation event;
- determine, based on the electrical cardiac signal, a ventricular sense event was not detected within a ventricular event detection window that begins at the atrial activation event;
- and
- control a leadless pacing device to switch from a sensing without pacing mode to an atrio-ventricular synchronous pacing mode based on the determination that the ventricular sense event was not detected within the ventricular event detection window, wherein controlling the leadless pacing device to switch to the atrio-ventricular synchronous pacing mode comprises controlling the leadless pacing device to deliver a pacing pulse to a heart according to the atrio-ventricular synchronous pacing mode.
Dependencies are inferred from the claim text.