US 12,276,628 B2
Systems and methods for measuring electrical characteristic of medical fluids
Philip Scott James, Orinda, CA (US); Jon F. Moss, Antioch, CA (US); Lynn E. Jensen, Syracuse, UT (US); Mary Hoover, Shawnee, OK (US); and Spencer Barrett, Oklahoma City, OK (US)
Assigned to Fresenius Medical Care Holdings, Inc., Waltham, MA (US)
Filed by Fresenius Medical Care Holdings, Inc., Waltham, MA (US)
Filed on Nov. 2, 2023, as Appl. No. 18/500,755.
Application 18/500,755 is a continuation of application No. 16/854,745, filed on Apr. 21, 2020, granted, now 11,879,860.
Claims priority of provisional application 62/860,046, filed on Jun. 11, 2019.
Prior Publication US 2024/0060924 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 27/07 (2006.01); A61M 1/02 (2006.01); A61M 1/14 (2006.01); A61M 1/16 (2006.01); A61M 1/28 (2006.01); G01N 33/49 (2006.01)
CPC G01N 27/07 (2013.01) [A61M 1/02 (2013.01); A61M 1/152 (2022.05); A61M 1/159 (2022.05); A61M 1/16 (2013.01); A61M 1/28 (2013.01); G01N 33/49 (2013.01); A61M 1/1562 (2022.05); A61M 2205/3327 (2013.01); A61M 2205/505 (2013.01); A61M 2205/52 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A device for measuring conductivity of a fluid, the device comprising:
a chamber that includes:
an inlet;
an outlet, wherein the fluid enters the chamber through the inlet and flows out of the chamber through the outlet; and
a concave surface located between the inlet and the outlet such that bubbles in the fluid are directed along the concave surface and towards the outlet or the inlet, wherein the concave surface extends toward a base of the chamber; and
two electrodes configured to measure electrical voltage in the fluid that enters the chamber through the inlet and flows out of the chamber through the outlet.