US 12,064,633 B2
Sensing cardiac signals with leads implanted in epidural space
Jiashu Li, Mounds View, MN (US); Jeffery Kramer, St. Louis Park, MN (US); and Vinod Sharma, Maple Grove, MN (US)
Assigned to Medtronic, Inc., Minneapolis, MN (US)
Filed by Medtronic, Inc., Minneapolis, MN (US)
Filed on Mar. 29, 2023, as Appl. No. 18/192,536.
Application 18/192,536 is a continuation of application No. 17/067,231, filed on Oct. 9, 2020, granted, now 11,642,531.
Prior Publication US 2023/0233861 A1, Jul. 27, 2023
Int. Cl. A61N 1/36 (2006.01); A61B 5/00 (2006.01); A61B 5/024 (2006.01); A61B 5/366 (2021.01)
CPC A61N 1/36139 (2013.01) [A61B 5/02405 (2013.01); A61B 5/366 (2021.01); A61B 5/686 (2013.01); A61B 5/725 (2013.01); A61N 1/36062 (2017.08)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
determining, by processing circuitry of an implantable medical device (IMD), that a patient is within one patient state of a plurality of patient states, wherein the patient state comprises at least one of a lying-down state or a sleep state;
in response to the determination that the patient is within the patient at least one of the lying-down state or the sleep state, sensing, by the processing circuitry and via a plurality of electrodes disposed on one or more leads implanted within an epidural space of the patient, an electrical signal;
obtaining, by the processing circuitry and from the electrical signal, one or more cardiac features indicative of activity of a heart of the patient during the at least one of the lying-down state or the sleep state; and
controlling, by the processing circuitry, delivery of a spinal cord stimulation (SCS) signal to the patient via the plurality of electrodes based at least in part on the one or more cardiac features indicative of activity of the heart of the patient.