Modular cardiac rhythm management using Q to LV activation measures
AssigneeCardiac Pacemakers, Inc.
InventorsSteven Lee Eddy, Brendan Early Koop, Yinghong Yu
Life of this patent
Estimating the term…
Abstract
Methods and systems for use of the Q-wave to R-wave interval to guide placement of a leadless cardiac pacemaker are disclosed. An implant delivery device is equipped with sensing electrodes to sense R-wave onset in a ventricle of a patient's heart to allow placement at a location of last or latest onset of the R-wave. Guidance tools are provided to assist in determination of the Q-wave to R-wave interval during implantation. For a chronic system, a cooperative approach is disclosed in which an implantable medical device and a leadless cardiac pacemaker exchange data to determine Q-wave to R-wave intervals and enhance cardiac resynchronization therapy delivery by the leadless cardiac pacemaker.
Claims20
An implantable medical device (IMD) configured for use with a leadless cardiac pacemaker (LCP) implanted in the left ventricle or coronary sinus of a patient, the IMD adapted to communicate with the LCP while implanted using wireless or conducted communication, the IMD comprising:
- a plurality of electrodes for sensing cardiac electrical activity;
- operational circuitry for analyzing the sensed cardiac electrical activity by:
- identifying one or more cardiac cycles;
- calculating a measure of Q-wave to R-wave timing for one or more cardiac cycles;
- and
- communicating to the LCP to cause the LCP to adjust a therapy regimen using at least the measure of Q-wave to R-wave timing.
An implantable medical device system comprising:
- a leadless cardiac pacemaker (LCP) configured for implantation in the left ventricle or coronary sinus of a patient, the LCP comprising LCP electrodes for therapy output and/or cardiac signal reception, an LCP communication module for communicating with at least the IMD, an LCP pulse generator module for generating pacing output signals, and an LCP processing module for managing a therapy regimen provided via the LCP pulse generator module, the LCP processing module responsive to commands received by the LCP communication circuit;
- an implantable medical device (IMD) adapted for placement in or on a patient, comprising IMD electrodes for sensing cardiac electrical activity, an IMD communication circuit for communicating at least with the LCP communication circuit, and IMD operational circuitry for analyzing the sensed cardiac electrical activity by:
- identifying one or more cardiac cycles;
- calculating a measure of Q-wave to R-wave timing for one or more cardiac cycles;
- and
- using the IMD communication circuitry to communicate to the LCP to cause the LCP to adjust a therapy regimen using at least the measure of Q-wave to R-wave timing.
A method of operation in an implantable system, the system including:
- a leadless cardiac pacemaker (LCP) configured for implantation in the left ventricle or coronary sinus of a patient, the LCP comprising LCP electrodes for therapy output and/or cardiac signal reception, an LCP communication module for communicating with at least the IMD, an LCP pulse generator module for generating pacing output signals, and an LCP processing module for managing a therapy regimen provided via the LCP pulse generator module, the LCP processing module responsive to commands received by the LCP communication circuit;
- an implantable medical device (IMD) adapted for placement in or on a patient, comprising IMD electrodes for sensing cardiac electrical activity, an IMD communication circuit for communicating at least with the LCP communication circuit;
- the method comprising:
- identifying one or more cardiac cycles in each of the IMD and the LCP;
- calculating a measure of Q-wave to R-wave timing for one or more cardiac cycles using data captured by each of the IMD and the LCP;
- and
- the LCP adjusting a pacing therapy regimen using at least the measure of Q-wave to R-wave timing.
Dependencies are inferred from the claim text.