US 11,986,277 B2
Methods for monitoring a blood glucose level in a person using radio waves
Michael A. Leabman, San Ramon, CA (US)
Assigned to Movano Inc., Pleasanton, CA (US)
Filed by MOVANO INC., San Ramon, CA (US)
Filed on Nov. 13, 2019, as Appl. No. 16/682,780.
Claims priority of provisional application 62/781,523, filed on Dec. 18, 2018.
Prior Publication US 2020/0187836 A1, Jun. 18, 2020
Int. Cl. A61B 5/145 (2006.01); A61B 5/00 (2006.01); A61B 5/0205 (2006.01); A61B 5/021 (2006.01); A61B 5/024 (2006.01); A61B 5/0245 (2006.01); A61B 5/05 (2021.01); G01S 7/03 (2006.01); G01S 13/02 (2006.01); G01S 13/26 (2006.01); G01S 13/76 (2006.01); G01S 13/88 (2006.01); H03D 7/16 (2006.01); H04B 1/04 (2006.01); H04B 7/06 (2006.01); H04B 7/08 (2006.01); G01S 7/02 (2006.01)
CPC A61B 5/0245 (2013.01) [A61B 5/0205 (2013.01); A61B 5/021 (2013.01); A61B 5/02141 (2013.01); A61B 5/02444 (2013.01); A61B 5/05 (2013.01); A61B 5/14532 (2013.01); A61B 5/489 (2013.01); A61B 5/681 (2013.01); A61B 5/6898 (2013.01); A61B 5/7207 (2013.01); A61B 5/725 (2013.01); A61B 5/7257 (2013.01); A61B 5/742 (2013.01); G01S 7/03 (2013.01); G01S 7/032 (2013.01); G01S 13/0209 (2013.01); G01S 13/26 (2013.01); G01S 13/76 (2013.01); G01S 13/88 (2013.01); H03D 7/168 (2013.01); H04B 1/04 (2013.01); H04B 7/06 (2013.01); H04B 7/0617 (2013.01); H04B 7/08 (2013.01); G01S 7/028 (2021.05); G01S 2013/0245 (2013.01); H04B 2001/0491 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for monitoring a blood glucose level in a person, the method comprising:
transmitting radio waves in a frequency range of 122-126 GHz over a three-dimensional (3D) space below a skin surface of a person;
receiving radio waves on multiple receive antennas of a two-dimensional array of receive antennas, the received radio waves including a reflected portion of the transmitted radio waves;
isolating a signal from a particular location in the 3D space in response to receiving the radio waves on the multiple receive antennas; and
outputting a signal that corresponds to a blood glucose level in the person in response to the isolated signal;
wherein transmitting the radio waves over the 3D space below the skin surface of the person comprises transmitting the radio waves in a stepped frequency pattern; and
wherein isolating the signal from the particular location in the 3D space in response to receiving the radio waves on the multiple receive antennas comprises implementing near-field beamforming signal processing to isolate signals reflected from a blood vessel of the person from signals that correspond to reflections from anatomical features of the person other than the blood vessel, wherein the near-field beamforming involves steering each receive antenna of the two-dimensional array of receive antennas independently to a different angle;
wherein the transmitting, receiving, isolating, and outputting occurs in a wearable device that is attached to the person.