公开(公告)号：US20230157598A1

公开(公告)日：2023-05-25

申请号：US17531294

申请日：2021-11-19

Applicant: Medtronic MiniMed, Inc.

Inventor： Davy Tong ,  Anuj M. Patel ,  Sarnath Chattaraj ,  Hsi Fusselman ,  Chia-Hung Chiu ,  Timothy Kwa ,  Nor Akmaliza Rais ,  Michael Weikai Chang ,  Vijaykumar Raorane

IPC: A61B5/1495 ,  G01N27/08 ,  G01N27/02 ,  G01N33/49 ,  A61B5/1477 ,  A61B5/145 ,  A61B5/0537 ,  A61B5/1473

CPC classification number: A61B5/1495 ,  G01N27/08 ,  G01N27/026 ,  G01N33/49 ,  A61B5/1477 ,  A61B5/14532 ,  A61B5/0537 ,  A61B5/1473

Abstract: A method includes monitoring, via a device including an electrochemical cell, an electrical current that is proportional to an impedance of the electrochemical cell, and responsive to determining that the electrical current satisfies a threshold, measuring, via the device, a plurality of impedances of the electrochemical cell corresponding to a plurality of frequencies. The method further includes determining a charge transfer conductance and a solution resistance based on the plurality of impedances at fewer than four of the corresponding plurality of frequencies and determining the presence of electrochemical interference based on the solution resistance and the charge transfer conductance. The method further includes outputting an alert based on the determination of the presence of electrochemical interference.