US 12,303,701 B2
Methods and implantable medical systems that implement exposure modes of therapy that allow for continued operation during exposure to a magnetic disturbance
Hyun J. Yoon, Vadnais Heights, MN (US); Wade M. Demmer, Coon Rapids, MN (US); Matthew J. Hoffman, St. Paul, MN (US); Robert A. Betzold, Fridley, MN (US); Jonathan D. Edmonson, Blaine, MN (US); Michael L. Ellingson, St. Louis Park, MN (US); Ben W. Herberg, Andover, MN (US); Juliana E. Pronovici, New Hope, MN (US); James D. Reinke, Maple Grove, MN (US); Todd J. Sheldon, North Oaks, MN (US); and Paul R. Solheim, Blaine, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by MEDTRONIC, INC., Minneapolis, MN (US)
Filed on Jul. 28, 2023, as Appl. No. 18/227,552.
Application 16/409,921 is a division of application No. 15/487,713, filed on Apr. 14, 2017, granted, now 10,293,167, issued on May 21, 2019.
Application 18/227,552 is a continuation of application No. 17/234,746, filed on Apr. 19, 2021, granted, now 11,724,111.
Application 17/234,746 is a continuation of application No. 16/409,921, filed on May 13, 2019, granted, now 10,981,010, issued on Apr. 20, 2021.
Claims priority of provisional application 62/323,560, filed on Apr. 15, 2016.
Prior Publication US 2023/0364430 A1, Nov. 16, 2023
Int. Cl. A61N 1/37 (2006.01); A61N 1/368 (2006.01); A61N 1/39 (2006.01)
CPC A61N 1/3718 (2013.01) [A61N 1/3931 (2013.01); A61N 1/3684 (2013.01); A61N 1/3688 (2013.01); A61N 1/3956 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method of controlling an exposure mode of therapy of an implantable medical device, comprising:
determining whether a pacing percentage of the device during a period of time prior to implementing the exposure mode exceeds a threshold;
when the threshold is not exceeded then selecting a non-pacing mode as the exposure mode;
when the threshold is exceeded by the pacing percentage, then determining whether a pre-exposure mode of the implantable medical device provides cardiac resynchronization therapy by pacing only a left ventricle of a heart;
when the pre-exposure mode does only pace the left ventricle, then selecting the non-pacing mode as the exposure mode;
when the pre-exposure mode does not only pace the left ventricle, then selecting a pacing mode that paces a same set of chambers of the heart as the pre-exposure mode as the exposure mode; and
upon detecting a need to switch to the exposure mode, implementing the selected exposure mode of therapy at the implantable medical device, wherein the implementing comprises providing pacing by the implantable medical device according to the selected exposure mode.