US 12,285,241 B2
Heart failure monitor using gait information
Gezheng Wen, Shoreview, MN (US); Bin Mi, Arden Hills, MN (US); 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 Dec. 2, 2019, as Appl. No. 16/700,462.
Claims priority of provisional application 62/775,153, filed on Dec. 4, 2018.
Prior Publication US 2020/0170515 A1, Jun. 4, 2020
Int. Cl. A61B 5/0205 (2006.01); A61B 5/00 (2006.01); A61B 5/11 (2006.01)
CPC A61B 5/0205 (2013.01) [A61B 5/0077 (2013.01); A61B 5/1112 (2013.01); A61B 5/112 (2013.01); A61B 5/1128 (2013.01); A61B 5/4023 (2013.01); A61B 5/7275 (2013.01); A61B 2562/0219 (2013.01); A61B 2562/0223 (2013.01); A61B 2562/0261 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for monitoring heart failure (HF) status of a patient, the system comprising:
a gait analyzer circuit configured to receive gait or balance information of a patient during locomotion, to generate a first gait feature and a second gait feature different than the first gait feature using the received gait or balance information, and to generate a first trend of the first gait feature over time and a second trend of the second gait feature over time; and
a HF detector circuit configured to determine respective weight factors for the first and second gait features using the first and second trends, to automatically determine a HF risk of the patient using a weighted combination of the first and second gait features each weighted by the respective weight factors, and to provide an output of the automatically determined HF risk to a display for presentation to a user or to adjust or initiate a process of the system.