公开(公告)号：US20250116625A1

公开(公告)日：2025-04-10

申请号：US18605190

申请日：2024-03-14

Applicant: Medtronic MiniMed, Inc.

Inventor： Robert M. McKinlay ,  Quyen B. Ong ,  Xin Heng ,  Weihong Cui

IPC: G01N27/327 ,  G01N27/02

Abstract: An analyte sensor includes a microcontroller, a base layer, a conductive layer disposed on the base layer where the conductive layer includes a working electrode configured to provide a current signal in presence of glucose, an interference rejection membrane (“IRM”) layer disposed on the working electrode where the IRM layer is negatively charged, and an enzyme layer disposed on the IRM layer where the enzyme layer includes an enzyme selected to generate a detectable electrical signal upon exposure to the glucose. The microcontroller is configured to process an electrochemical impedance spectroscopy (EIS) parameter to determine a state of the IRM layer.