US 11,684,272 B2
Ambulatory vasoactivity monitor
Pramodsingh Hirasingh Thakur, Woodbury, MN (US); Viktoria A. Averina, Shoreview, MN (US); and Qi An, Blaine, MN (US)
Assigned to Cardiac Pacemakers, Inc., St. Paul, MN (US)
Filed by Cardiac Pacemakers, Inc., St. Paul, MN (US)
Filed on Jul. 18, 2019, as Appl. No. 16/515,783.
Claims priority of provisional application 62/714,417, filed on Aug. 3, 2018.
Prior Publication US 2020/0037888 A1, Feb. 6, 2020
Int. Cl. A61B 5/00 (2006.01); A61B 5/021 (2006.01); A61B 5/0205 (2006.01); A61B 5/113 (2006.01); A61N 1/39 (2006.01); A61B 5/11 (2006.01); A61B 5/053 (2021.01); A61N 1/365 (2006.01); A61B 5/0285 (2006.01); A61B 5/02 (2006.01); A61B 5/08 (2006.01); A61B 5/024 (2006.01); A61N 1/37 (2006.01); A61N 1/362 (2006.01); A61B 5/316 (2021.01); A61B 5/349 (2021.01)
CPC A61B 5/021 (2013.01) [A61B 5/0205 (2013.01); A61B 5/113 (2013.01); A61B 5/1116 (2013.01); A61B 5/686 (2013.01); A61B 5/7275 (2013.01); A61N 1/3904 (2017.08); A61B 5/0031 (2013.01); A61B 5/024 (2013.01); A61B 5/02007 (2013.01); A61B 5/0285 (2013.01); A61B 5/053 (2013.01); A61B 5/0816 (2013.01); A61B 5/316 (2021.01); A61B 5/349 (2021.01); A61B 5/4035 (2013.01); A61N 1/3627 (2013.01); A61N 1/36514 (2013.01); A61N 1/36585 (2013.01); A61N 1/3702 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for ambulatory monitoring of vasoactivity in a patient, comprising:
a sensor circuit configured to generate a heart sound (HS) metric using a HS signal sensed from the patient; and
a control circuit, including: a vasoactivity monitor configured to monitor vasoactivity and determine a degree of vasodilation using the generated HS metric; and a vasovagal surge detector configured to detect a vasovagal surge using the determined degree of vasodilation.