US 12,011,600 B2
System for adjusting ventricular refractory periods
Jan O. Mangual-Soto, Rho (IT)
Assigned to Pacesetter, Inc., Sylmar (CA)
Filed by Pacesetter, Inc., Sylmar, CA (US)
Filed on Apr. 21, 2022, as Appl. No. 17/725,599.
Application 17/725,599 is a continuation of application No. 16/895,500, filed on Jun. 8, 2020, granted, now 11,338,146.
Prior Publication US 2022/0241597 A1, Aug. 4, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 1/368 (2006.01); A61N 1/37 (2006.01)
CPC A61N 1/3702 (2013.01) [A61N 1/368 (2013.01); A61N 1/3682 (2013.01); A61N 1/3684 (2013.01); A61N 1/3686 (2013.01); A61N 1/3706 (2013.01); A61N 1/36842 (2017.08); A61N 1/36843 (2017.08)] 20 Claims
OG exemplary drawing
 
1. A system for controlling a left univentricular (LUV) pacing therapy using an implantable medical device (IMD), the system comprising:
electrodes configured to be located proximate to a left ventricular (LV) site and a right ventricular (RV) site of the heart;
a sensing circuitry configured to define an RV sensing channel;
memory to store program instructions;
one or more processors configured to implement the program instructions to:
determine an inter-ventricular (VV) conduction interval (RLV-RRV) between a paced event at the LV site and an RV sensed event at the RV site;
set a ventricular refractory period (VRP) based on the VV conduction interval and a predetermined offset;
blank signals over the RV sensing channel during the VRP; and
manage the LUV pacing therapy based on the signals sensed over the RV sensing channel outside of the VRP, wherein the LUV pacing therapy lacks pacing in the RV.