TRANSCUTANEOUS ANALYTE SENSOR

• US 20090216103A1
• Filed: 05/07/2009
• Published: 08/27/2009
• Est. Priority Date: 07/13/2004
• Status: Active Grant

• Current Assignee: DexCom Incorporated
• Original Assignee: DexCom Incorporated
• Inventors: Dobbles, J. Michael, Kamath, Apurv Ullas, Brister, Mark, Masterson, Steve, Brauker, James, Mensinger, Michael Robert, Saint, Sean
• Granted Patent: US 8,565,848 B2
• Time in Patent Office: Days
• US Class Current: 600/347
• CPC Class Codes: A61B 2560/0223 of calibration, e.g. protocols for calibrating sensors
• CPC Class Codes: A61B 2560/0276 Determining malfunction
• CPC Class Codes: A61B 5/1451 for interstitial fluid
• CPC Class Codes: A61B 5/14517 for sweat
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/14865 invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: A61B 5/6833 Adhesive patches
• CPC Class Codes: A61B 5/68335 including release sheets or liners
• CPC Class Codes: A61B 5/6848 Needles
• CPC Class Codes: A61B 5/6849 in combination with a needle set
• CPC Class Codes: A61B 5/7264 Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems neural networks per se G06N3/00; expert systems per se G06N5/00

Abstract

The present invention relates generally to systems and methods for measuring an analyte in a host. More particularly, the present invention relates to systems and methods for transcutaneous measurement of glucose in a host.

Claims

1. A sensor system for measuring an analyte in a host, the system comprising:

a sensor configured to measure an analyte concentration in a host; and

electronics operably connected to the sensor and configured to initialize a sensor session after the sensor is in communication with a biological sample of the host, wherein the electronics are configured to confirm removal of the sensor from contact with the biological sample of the host prior to initialization of another sensor session.

2. The sensor system of claim 1, wherein the electronics are configured to render the sensor system inoperative after a predetermined time period.

3. The sensor system of claim 1, wherein the electronics are configured to identify a sensor insertion.

4. The sensor system of claim 1, wherein the electronics are configured to identify a removal of the sensor by evaluation of sensor data.

5. The sensor system of claim 1, wherein the electronics are configured to disallow display of sensor data after removal of the sensor.

6. A sensor system for measuring an analyte in a host, the system comprising:

a sensor configured to measure an analyte concentration in a host; and

electronics operably connected to the sensor, wherein the electronics configured to confirm a sensor insertion prior to initialization of a sensor session.

7. The sensor system of claim 6, wherein the electronics are configured to provide information indicative of a predetermined time period associated with the sensor.

8. The sensor system of claim 7, wherein the electronics are configured to receive the information indicative of a predetermined time period associated with the sensor and are configured to display sensor data only for the predetermined time period.

9. The sensor system of claim 7, wherein the electronics are configured to receive the information indicative of a predetermined time period associated with the sensor and wherein the sensor system is configured to become inoperative by discontinuing display of sensor data after the predetermined time period.

10. The sensor system of claim 6, wherein the electronics are configured to identify a sensor insertion by examining sensor data.

11. A sensor system for measuring an analyte in a host, the system comprising:

a sensor configured to measure an analyte concentration in a host; and

electronics operably connected to the sensor and configured identify at least one of an insertion of the sensor and a removal of the sensor from contact with a biological sample of the host; and

a user interface operably connected to the electronics, wherein the electronics are configured to control the user interface in response to an identification of at least one of a sensor insertion and an identification of a sensor removal.

12. The sensor system of claim 11, wherein the electronics are configured to identify a sensor insertion by examining sensor data.

13. A sensor system for measuring an analyte in a host, the system comprising:

a sensor configured to measure an analyte concentration in a host; and

electronics operably connected to the sensor and configured to initialize a sensor session after the sensor is in communication with a biological sample of the host, wherein the electronics are configured to confirm disconnection of the sensor from sensor electronics prior to initialization of another sensor session.

14. The sensor system of claim 13, wherein the electronics are configured to render the sensor system inoperative after a predetermined time period.

15. The sensor system of claim 13, wherein the electronics are configured to identify a sensor insertion.

16. The sensor system of claim 13, wherein the electronics are configured to identify a disconnection of the sensor by evaluation of sensor data.

17. The sensor system of claim 13, wherein the electronics are configured to disallow display of sensor data after removal of the sensor.