Transcutaneous analyte sensor

• US 9,775,543 B2
• Filed: 12/30/2013
• Issued: 10/03/2017
• Est. Priority Date: 07/13/2004
• Status: Active Grant

• Current Assignee: DexCom Incorporated
• Original Assignee: DexCom Incorporated
• Inventors: Brister, Mark C., Masterson, Steve, Dobbles, John Michael, Mensinger, Michael Robert, Saint, Sean, Kamath, Apurv Ullas
• Primary Examiner(s): JANG, CHRISTIAN YONGKYUN
• Application Number:
  US14/144,523
• Publication Number:
  US 20140114158A1
• Time in Patent Office: 1,373 Days
• 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 continuous analyte monitoring assembly adapted to assist in determining an analyte level of a fluid, the continuous analyte monitoring assembly comprising:

a housing having a bottom, the bottom forming a recess;

electronics located within the housing, the electronics being adapted to assist in determining an analyte level of a fluid sample;

an implantable sensor comprising a sensor body and at least one electrode disposed on the sensor body, wherein the implantable sensor is adapted to move from a retracted position to an inserted position through the recess, wherein in the retracted position the implantable sensor is at least partially curved and stowed at least partially inside the housing, wherein in the retracted position the at least one electrode resides above a host'"'"'s skin, wherein in the inserted position the implantable sensor extends at least partially out of the housing, wherein in the inserted position the at least one electrode is adapted to at least partially reside under the host'"'"'s skin; and

a cannula being adapted to assist in placing the implantable sensor.

2. The assembly of claim 1, wherein the electronics is a printed circuit.

3. The assembly of claim 1, further including a removable adhesive liner, the adhesive liner adapted to attach to skin.

4. The assembly of claim 1, wherein the housing includes a disposable housing and a reusable housing, the reusable housing being adapted to contain the electronics.

5. The assembly of claim 4, wherein the disposable housing includes the implantable sensor, the cannula and an adhesive liner.

6. The assembly of claim 1, wherein the implantable sensor is a wire that includes a reagent.

7. The assembly of claim 1, wherein the implantable sensor is an electrochemical sensor.