US 12,259,268 B2
Non-intrusive flow sensor
Vijaya Kumar Parari, Fridley, MN (US)
Assigned to MOZARC MEDICAL US LLC, Minneapolis, MN (US)
Filed by MOZARC MEDICAL US LLC, Minneapolis, MN (US)
Filed on May 3, 2021, as Appl. No. 17/306,090.
Prior Publication US 2022/0347364 A1, Nov. 3, 2022
Int. Cl. G01F 23/26 (2022.01); A61M 1/28 (2006.01); A61M 1/30 (2006.01); G01F 23/263 (2022.01); G16H 20/40 (2018.01); G16H 20/17 (2018.01)
CPC G01F 23/266 (2013.01) [A61M 1/282 (2014.02); A61M 1/308 (2014.02); G01F 23/263 (2013.01); G01F 23/268 (2013.01); G16H 20/40 (2018.01); A61M 1/287 (2013.01); A61M 2205/3317 (2013.01); A61M 2205/3331 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/3389 (2013.01); A61M 2205/3569 (2013.01); A61M 2205/3592 (2013.01); G16H 20/17 (2018.01)] 8 Claims
OG exemplary drawing
 
1. A flow sensor, comprising:
an RF transmission line between an RF transmitter and an RF receiver; and
an RF impedance measuring circuit; the RF impedance measuring circuit measuring an RF impedance in the RF transmission line that varies with a liquid volume in a container; the RF transmitter and RF receiver both non-intrusive to the container;
the RF impedance measuring circuit in communication with a control system; the control system programmed to determine a liquid volume in the container based on the measured impedance.