US 11,051,718 B2
Systems and methods for managing heart failure using heart sounds
Qi An, Blaine, MN (US); and Pramodsingh Hirasingh Thakur, Woodbury, MN (US)
Assigned to Cardiac Pacemakers, Inc., St. Paul, MN (US)
Filed by Cardiac Pacemakers, Inc., St. Paul, MN (US)
Filed on May 30, 2018, as Appl. No. 15/992,531.
Claims priority of provisional application 62/513,603, filed on Jun. 1, 2017.
Prior Publication US 2018/0344212 A1, Dec. 6, 2018
Int. Cl. A61B 5/11 (2006.01); A61N 1/362 (2006.01); A61B 5/053 (2021.01); A61N 1/365 (2006.01); A61B 5/00 (2006.01); A61B 7/04 (2006.01); A61B 5/02 (2006.01); A61B 5/029 (2006.01); A61B 5/024 (2006.01); A61B 5/0205 (2006.01); A61N 1/375 (2006.01); A61N 1/372 (2006.01); A61B 5/349 (2021.01); G16H 10/60 (2018.01)
CPC A61B 5/1102 (2013.01) [A61B 5/0022 (2013.01); A61B 5/0205 (2013.01); A61B 5/029 (2013.01); A61B 5/02028 (2013.01); A61B 5/02438 (2013.01); A61B 5/053 (2013.01); A61B 5/4836 (2013.01); A61B 7/04 (2013.01); A61N 1/3627 (2013.01); A61N 1/36578 (2013.01); A61B 5/024 (2013.01); A61B 5/1116 (2013.01); A61B 5/349 (2021.01); A61B 5/7264 (2013.01); A61N 1/365 (2013.01); A61N 1/3756 (2013.01); A61N 1/37282 (2013.01); G16H 10/60 (2018.01)] 20 Claims
OG exemplary drawing
 
12. A method for managing heart failure in a patient using a medical system, the method comprising:
receiving, via a signal receiver circuit, a heart sound (HS) signal and an impedance signal sensed from the patient;
determining, via a heart sound detector circuit, a HS detection window for detecting at least one of a third heart sound (S3) component or a fourth heart sound (S4) component from values of the received impedance signal;
detecting, via the heart sound detector circuit, at least one of the S3 component or the S4 component from the received HS signal within the determined HS detection window; and
generate, via the heart failure detector circuit, a cardiac diastolic function indicator (DFI) using the detected at least one of the S3 component or the S4 component.