US 11,850,029 B2
Tonometry based blood pressure measurements using a two-dimensional force sensor array
Sanjay Mehrotra, Winnetka, IL (US); Ilya Mikhelson, Wilmette, IL (US); and Alan Varteres Sahakian, Northbrook, IL (US)
Assigned to Northwestern University, Evanston, IL (US)
Filed by Northwestern University, Evanston, IL (US)
Filed on Jul. 26, 2021, as Appl. No. 17/385,216.
Application 17/385,216 is a division of application No. 15/627,911, filed on Jun. 20, 2017, granted, now 11,109,768.
Claims priority of provisional application 62/375,524, filed on Aug. 16, 2016.
Claims priority of provisional application 62/355,017, filed on Jun. 27, 2016.
Prior Publication US 2022/0039676 A1, Feb. 10, 2022
Int. Cl. A61B 5/021 (2006.01); A61B 5/00 (2006.01); A61B 5/02 (2006.01)
CPC A61B 5/02108 (2013.01) [A61B 5/6824 (2013.01); A61B 5/02 (2013.01); A61B 2562/0247 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of determining a blood pressure of a subject human being for ambulatory monitoring, the method comprising:
using a pressure sensor array having a plurality of pressure sensors spaced-apart in at least two dimensions, applanating an artery;
receiving a plurality of pressure sensor signals, one or more of the pressure sensor signals having data representing amplitudes of one or more arterial pressure waves;
determining a frequency content of each of the one or more of the pressure sensor signals having data;
selecting, based on the determined frequency content, one or more pressure sensor signals that are periodic within a predetermined frequency range to form a first plurality of selected pressure sensor signals;
selecting one or more periodic pressure sensor signals within a selected deviation of a mean of the first plurality of selected pressure sensor signals to form a second plurality of selected pressure sensor signals;
using one or more periodic pressure sensor signals from the second plurality of selected pressure sensor signals, determining a systolic blood pressure value and a diastolic blood pressure value.