Analyte sensor

• US 8,750,955 B2
• Filed: 11/02/2009
• Issued: 06/10/2014
• Est. Priority Date: 07/13/2004
• Status: Active Grant

• Current Assignee: DexCom Incorporated
• Original Assignee: DexCom Incorporated
• Inventors: Brister, Mark, Masterson, Steve, Dobbles, J. Michael, Mensinger, Michael Robert, Saint, Sean, Kamath, Apurv Ullas, Brauker, James, Thrower, James Patrick
• Primary Examiner(s): D'ANGELO, MICHAEL J
• Application Number:
  US12/610,866
• Publication Number:
  US 20100081908A1
• Time in Patent Office: 1,681 Days
• Field of Search: 600/309, 600/316, 600345-347, 600/365
• US Class Current: 600/345
• 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 2560/028 Arrangements to prevent overuse, e.g. by counting the number of uses
• CPC Class Codes: A61B 5/0031 Implanted circuitry
• 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 5/1468 using chemical or electrochemical methods, e.g. by polarographic means A61B5/1486 takes precedence
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61B 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• 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 5/6832 using adhesives A61B5/259 takes precedence
• CPC Class Codes: A61B 5/6833 Adhesive patches
• 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
• CPC Class Codes: A61B 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: A61L 2/12 Microwaves
• CPC Class Codes: A61L 2/206 : Ethylene oxide
• CPC Class Codes: Y02A 90/10 : Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
• CPC Class Codes: Y10T 29/49004 : including measuring or testing of device or component part

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 system for limiting use of a continuous glucose sensor to a predetermined duration of time, the system comprising:

a transcutaneous continuous glucose sensor configured to measure a glucose concentration in a host for a predetermined duration of time;

a reusable device configured to display real-time sensor data from the transcutaneous continuous glucose sensor during the predetermined duration of time; and

electronic circuitry configured to detect, by evaluating a signal from the transcutaneous continuous glucose sensor, at least one of sensor insertion into tissue of the host or sensor removal from tissue of the host, wherein the reusable device is configured to control display of the real-time sensor data from the transcutaneous continuous glucose sensor based at least in part on at least one of the detected sensor insertion into tissue of the host or the detected sensor removal from tissue of the host.

2. The system of claim 1, wherein the reusable device is configured to receive a key.

3. The system of claim 2, wherein the key comprises sensor duration information.

4. The system of claim 2, wherein the key is a software license code.

5. The system of claim 2, wherein the key is a unique code.

6. The system of claim 2, wherein the key is configured for use with a plurality of transcutaneous continuous glucose sensors.

7. The system of claim 1, wherein the electronic circuitry is physically attached to the reusable device.

8. The system of claim 1, wherein the electronic circuitry is configured to be physically attached to the transcutaneous continuous glucose sensor.

9. The system of claim 1, wherein the electronic circuitry is configured to detect at least one of sensor insertion into tissue of the host or sensor removal from tissue of the host by algorithmic identification.

10. A kit for determining a glucose concentration in a host, the kit comprising:

at least one transcutaneous continuous glucose sensor configured to measure a glucose concentration in a host for a predetermined duration of time;

a reusable device configured to display real-time sensor data from the at least one transcutaneous continuous glucose sensor during the predetermined duration of time; and

electronic circuitry configured to detect, by algorithmic identification, at least one of sensor insertion into tissue of the host or sensor removal from tissue of the host, wherein the reusable device is configured to control display of the real-time sensor data from the at least one transcutaneous continuous glucose sensor based at least in part on the detected sensor insertion into tissue of the host or the detected sensor removal from tissue of the host.

11. The kit of claim 10, wherein the reusable device comprises a receiver configured to receive sensor data associated with the glucose concentration in the host, wherein the receiver comprises a display and the electronic circuitry.

12. The kit of claim 10, further comprising a transmitter configured to transmit sensor data associated with the glucose concentration in a host to the reusable device, wherein the transmitter comprises the electronic circuitry.

13. The kit of claim 10, wherein the at least one transcutaneous continuous glucose sensor comprises a plurality of transcutaneous continuous glucose sensors.

14. The kit of claim 10, further comprising a license code.

15. The kit of claim 14, wherein the reusable device is configured to receive the license code.

16. The kit of claim 14, wherein the license code is a software key.

17. The kit of claim 14, wherein the license code is a unique code.

18. The kit of claim 14, wherein the license code is configured for use with a plurality of single-use sensors.

19. A device for determining a glucose concentration in a host, the device comprising:

electronic circuitry configured to detect, by evaluating a signal from a transcutaneous continuous glucose sensor, insertion of the insertion of the transcutaneous continuous glucose sensor into a host'"'"'s tissue or to detect removal of a transcutaneous continuous glucose sensor from the host'"'"'s tissue, wherein the device is further configured to control display of real-time continuous sensor data from the transcutaneous continuous glucose sensor based at least in part on a predetermined duration of the transcutaneous continuous glucose sensor and at least one of the detected sensor insertion into the host'"'"'s tissue or the detected sensor removal from the host'"'"'s tissue.