公开(公告)号：US20240423518A1

公开(公告)日：2024-12-26

申请号：US18828569

申请日：2024-09-09

Applicant: Dexcom, Inc.

Inventor： Sebastian Böhm ,  Anna Harley-Trochimczyk ,  Daiting Rong ,  Rui Ma ,  Wenjie Lan ,  Minglian Shi ,  Disha Sheth

IPC: A61B5/1495 ,  A61B5/00 ,  A61B5/0537 ,  A61B5/145 ,  A61B5/1473 ,  A61B5/1486 ,  G01N27/02 ,  G01N27/22 ,  G01N27/24 ,  G01N33/487

Abstract: Various examples are directed to systems and methods for operating an analyte sensor system using sensor electronics. An example method may comprise applying a bias voltage change to an analyte sensor bias voltage and measuring a current value for each of a plurality of time periods after application of the bias voltage change. The example method may also comprise determining an estimated impedance using the current values for the plurality of time periods and determining a characteristic of the analyte sensor using the estimated impedance. The example method may further comprise receiving from the analyte sensor a signal indicative of an analyte concentration, and determining an estimated analyte concentration level using the determined characteristic of the analyte sensor and the received signal.

公开(公告)号：US20230148920A1

公开(公告)日：2023-05-18

申请号：US17938647

申请日：2022-10-06

Applicant: Dexcom, Inc.

Inventor： Anna Harley-Trochimczyk ,  Sebastian Bohm ,  Rui Ma ,  Disha Sheth ,  Minglian Shi ,  Kamuran Turksoy

IPC: A61B5/1495 ,  A61B5/0205 ,  A61B5/145 ,  A61B5/1486 ,  A61B5/00 ,  A61B5/01 ,  G16H50/20 ,  G01N27/327

CPC classification number: A61B5/1495 ,  A61B5/0205 ,  A61B5/14532 ,  A61B5/14865 ,  A61B5/0022 ,  A61B5/7203 ,  A61B5/01 ,  A61B5/7221 ,  G16H50/20 ,  G01N27/3274 ,  A61B5/681 ,  A61B5/024

Abstract: This document discusses, among other things, systems and methods to compensate for the effects of temperature on sensors, such as analyte sensor. An example method may include determining a temperature-compensated glucose concentration level by receiving a temperature signal indicative of a temperature parameter of an external component, receiving a glucose signal indicative of an in vivo glucose concentration level, and determining a compensated glucose concentration level based on the glucose signal, the temperature signal, and a delay parameter.

公开(公告)号：US20240252074A1

公开(公告)日：2024-08-01

申请号：US18425940

申请日：2024-01-29

Applicant: Dexcom, Inc.

Inventor： Sebastian Böhm ,  Anna Harley-Trochimczyk ,  Daiting Rong ,  Rui Ma ,  Wenjie Lan ,  Minglian Shi ,  Disha Sheth ,  Nicholas Kalfas ,  Vincent Crabtree ,  Kamuran Turksoy

IPC: A61B5/1495 ,  A61B5/00 ,  A61B5/0537 ,  A61B5/145 ,  A61B5/1473 ,  A61B5/1486 ,  G01N27/02 ,  G01N27/22 ,  G01N27/24 ,  G01N33/487

CPC classification number: A61B5/1495 ,  A61B5/0537 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1473 ,  A61B5/1486 ,  A61B5/14865 ,  A61B5/6844 ,  G01N27/221 ,  G01N27/24 ,  G01N33/48707 ,  A61B5/0004 ,  A61B5/0031 ,  A61B2560/0223 ,  A61B2560/0252 ,  A61B2560/0276 ,  G01N27/026

Abstract: Various examples are directed to systems and methods of and using analyte sensors. An example analyte sensor system comprises an analyte sensor and a hardware device in communication with the analyte sensor. The hardware device may be configured to perform operations comprising applying a first bias voltage to the analyte sensor, the first bias voltage less than an operational bias voltage of the analyte sensor, measuring a first current at the analyte sensor when the first bias voltage is applied, and applying a second bias voltage to the analyte sensor. The operations may further comprise measuring a second current at the analyte sensor when the second bias voltage is applied, detecting a plateau bias voltage using the first current and the second current, determining that the plateau bias voltage is less than a plateau bias voltage threshold, and executing a responsive action at the analyte sensor.

公开(公告)号：US20230190151A1

公开(公告)日：2023-06-22

申请号：US18067427

申请日：2022-12-16

Applicant: Dexcom, Inc.

Inventor： James S. Amidei ,  Stefan M. Robert ,  Anna Harley-Trochimczyk ,  Thomas George O'Connell ,  Anderson Ionut Micu

IPC: A61B5/145

CPC classification number: A61B5/14546 ,  A61B5/14532

Abstract: Various examples are directed to systems and methods that may utilize an analyte sensor system comprising a sensor enclosure; an analyte sensor extending from the sensor enclosure; and sensor electronics positioned within the sensor enclosure. The sensor electronics may be configured to detect that a wireless signal has changed from a first state to a second state, where the wireless signal may be provided through the sensor enclosure. After detecting that the wireless signal has changed from the first state to the second state, the sensor electronics may monitor whether the wireless signal remains in the second state for at least a stability threshold time period. The sensor electronics may execute a responsive action in the sensor system based at least in part on whether the wireless signal remains in the second state for at least the stability threshold time period.

公开(公告)号：US20240277270A1

公开(公告)日：2024-08-22

申请号：US18603021

申请日：2024-03-12

Applicant: Dexcom, Inc.

Inventor： Sebastian Böhm ,  Anna Harley-Trochimczyk ,  Daiting Rong ,  Rui Ma ,  Wenjie Lan ,  Minglian Shi ,  Disha Sheth ,  Vincent Crabtree ,  Kamuran Turksoy

IPC: A61B5/1495 ,  A61B5/00 ,  A61B5/0537 ,  A61B5/145 ,  A61B5/1473 ,  A61B5/1486 ,  G01N27/02 ,  G01N27/22 ,  G01N27/24 ,  G01N33/487

CPC classification number: A61B5/1495 ,  A61B5/0537 ,  A61B5/14532 ,  A61B5/14546 ,  A61B5/1473 ,  A61B5/1486 ,  A61B5/14865 ,  A61B5/6844 ,  G01N27/221 ,  G01N27/24 ,  G01N33/48707 ,  A61B5/0004 ,  A61B5/0031 ,  A61B2560/0223 ,  A61B2560/0252 ,  A61B2560/0276 ,  G01N27/026

Abstract: Various examples described herein are directed to systems and methods of detecting damage to an analyte sensor using analyte sensor impedance values. In some examples, a method of assessing sensor membrane integrity using sensor electronics comprises determining an impedance parameter of an analyte sensor and determining a membrane integrity state of the analyte sensor based on the impedance parameter.