Transcutaneous analyte sensor

• US 10,610,102 B2
• Filed: 07/03/2019
• Issued: 04/07/2020
• Est. Priority Date: 03/10/2005
• Status: Active Grant

• Current Assignee: DexCom Incorporated
• Original Assignee: DexCom Incorporated
• Inventors: Brister, Mark C., Pryor, Jack, Nolting, John, Leach, Jacob S., Pestana, Luis, Quintana, Nelson, Swanson, Vance, Goode, Jr., Paul V., Thrower, James Patrick
• Primary Examiner(s): Jang, Christian
• Application Number:
  US16/503,017
• Publication Number:
  US 20190320901A1
• Time in Patent Office: 279 Days
• CPC Class Codes: A61B 2560/0214 of power generation or supply
• CPC Class Codes: A61B 2560/0223 of calibration, e.g. protocols for calibrating sensors
• CPC Class Codes: A61B 2562/08 Sensors provided with means for identification, e.g. barcodes or memory chips
• CPC Class Codes: A61B 5/0002 Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network A61B5/07 takes precedence; transmission systems for measured values G08C; transmission H04B; transmission of digital information H04L; wireless communication networks H04W
• CPC Class Codes: A61B 5/0022 Monitoring a patient using a global network, e.g. telephone networks, internet
• CPC Class Codes: A61B 5/1411 by percutaneous method, e.g. by lancet
• CPC Class Codes: A61B 5/14507 specially adapted for measuring characteristics of body fluids other than blood devices for taking samples of body liquids A61B10/0045
• 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 5/1473 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 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150534 Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
• 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 5/742 using visual displays A61B5/339 takes precedence
• CPC Class Codes: G16Z 99/00 Subject matter not provided for in other main groups of this subclass
• CPC Class Codes: Y02A 90/10 : Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

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 measuring an analyte concentration in a host, the system comprising:

a sensor system comprising;

a sensor configured to generate a signal indicative of the analyte concentration in the host, and

sensor electronics configured to operably connect to the sensor, the sensor electronics comprising a radio frequency module; and

a receiver comprising;

a processor configured to cause interrogation of the radio frequency module, and to process data received during the interrogation, and

a display configured to display an estimated analyte concentration value associated with the processed data;

wherein the radio frequency module is configured to transmit information representative of the analyte concentration to the receiver in response to the receiver interrogating the sensor electronics;

wherein the radio frequency module is configured to transmit calibration information to the receiver in response to the receiver interrogating the sensor electronics; and

wherein the displayed estimated analyte concentration value is based at least in part on the processed data and the calibration information.

2. The sensor system of claim 1, wherein the sensor electronics comprises an antenna, wherein the antenna extends substantially around a periphery of a housing of the sensor electronics.

3. The system of claim 1, wherein the sensor electronics are in a housing, and wherein a height of the housing is no more than about 0.250 inches in its smallest dimension.

4. The system of claim 1, wherein the sensor is configured for insertion into the host'"'"'s tissue.

5. The system of claim 1, further comprising:

an internal power supply; and

a switch operatively connected to the internal power supply, the switch configured to switch between a first state and a second state, wherein the internal power supply is configured to be in a first power mode when the switch is in the first state and in a second power mode when the switch is in the second state, the first power mode supplying less power to the sensor electronics than the second power mode.

6. The system of claim 5, wherein the internal power supply provides a bias voltage for the sensor to generate the signal indicative of the analyte concentration.

7. The system of claim 1, wherein the receiver provides inductive power to the radio frequency module when interrogating the sensor electronics.

8. The system of claim 7, wherein the inductive power is provided when the receiver is placed in proximity to the sensor electronics.

9. The system of claim 1, wherein a processor of the sensor electronics is configured to build a data packet for transmission to the receiver, wherein the data packet comprises one or more of a sensor ID code, raw data, filtered data, and/or error detection or correction.

10. The system of claim 1, wherein the sensor system is associated with a serial number associated with one or a set of sensor systems.

11. The system of claim 10, wherein the serial number includes the calibration information transmitted to the receiver.

12. The system of claim 11, wherein the serial number is wirelessly transmitted from the sensor system to the receiver, and wherein the sensor electronics is also labeled alphanumerically to differentiate sensor systems.

13. The system of claim 12, wherein the serial number includes the calibration information transmitted to the receiver.

14. The system of claim 1, wherein the calibration information comprises a serial number or a code.