US 11,850,087 B2
Heart sound sensing headgear
Jonathan Bennett Shute, Minnetonka, MN (US); Rezwan Ahmed, Arden Hills, MN (US); Bin Mi, Arden Hills, MN (US); Krzysztof Z. Siejko, Maple Grove, MN (US); Pramodsingh Hirasingh Thakur, Woodbury, 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 Apr. 17, 2019, as Appl. No. 16/386,611.
Claims priority of provisional application 62/668,630, filed on May 8, 2018.
Prior Publication US 2019/0343480 A1, Nov. 14, 2019
Int. Cl. A61B 7/02 (2006.01); A61B 5/00 (2006.01); A61B 7/04 (2006.01); A61B 5/349 (2021.01); A61B 5/0205 (2006.01); A61N 1/362 (2006.01); A61B 5/1455 (2006.01)
CPC A61B 7/026 (2013.01) [A61B 5/0051 (2013.01); A61B 5/349 (2021.01); A61B 5/6803 (2013.01); A61B 5/6817 (2013.01); A61B 7/04 (2013.01); A61B 5/02055 (2013.01); A61B 5/1455 (2013.01); A61B 5/486 (2013.01); A61B 2562/0204 (2013.01); A61N 1/362 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for sensing heart sounds in a subject, comprising:
a first earpiece configured to be positioned at an outer portion of a left ear of the subject and to sense a first physiologic signal therefrom via a first sensor, and a second earpiece configured to be positioned at an outer portion of a right ear of the subject and to sense a second physiologic signal therefrom via a second sensor, the first and second physiologic signals each including mechanical information associated with blood flow in the subject; and
a processor configured to:
determine a first motion artifact component from the first physiologic signal and determine a second motion artifact component from the second physiologic signal;
generate an alert to the subject to re-position at least one of the first or the second earpiece until the first motion artifact component is substantially out of phase relative to the second motion artifact component;
combine the sensed first and second physiologic signals to remove or attenuate the first and the second motion artifact components representing motion of the subject common to but substantially out of phase between the first and second physiologic signals from the respective first and second sensors at the first and second earpieces at the left and the right ears of the subject, respectively; and
process the combined signal and generate therefrom a heart sound metric, the heart sound metric including at least one of S1, S2, S3, or S4 heart sound of the subject as received at the first and second earpieces.