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US 2009/0242425 A1Published application
Analyte sensor
AssigneeDexCom, Inc.
InventorsApurv Ullas Kamath, Peter C. Simpson, Mark Brister
Life of this patent
Estimating the term…
Abstract
Systems and methods of use for continuous analyte measurement of a host's vascular system are provided. In some embodiments, a continuous glucose measurement system includes a vascular access device, a sensor and sensor electronics, the system being configured for insertion into communication with a host's circulatory system.
Claims26
A continuous analyte detection system, comprising:
- a continuous analyte sensor configured for contact with a sample from a circulatory system of a host and configured to generate a first signal and a second signal, wherein the first signal is associated with a test analyte and the second signal is associated with a reference analyte;
- a reference sensor configured to generate a reference signal associated with the reference analyte;
- and
- a processor module configured to process the second signal and the reference signal to calibrate the first signal.
1 more element
A method for measuring an analyte in a host, comprising:
- exposing a continuous analyte detection system to a sample, wherein the continuous analyte detection system comprises a continuous analyte sensor configured for contact with a sample from a circulatory system of a host in vivo and configured to generate a first signal associated with a test analyte and a second signal associated with a reference analyte, and a reference sensor configured to generate a reference signal associated with the reference analyte;
- receiving the first signal, the second signal, and the reference signal;
- calculating a calibration factor associated with a sensitivity of the continuous analyte sensor;
- and
- calibrating the first signal, wherein calibrating comprises using the calibration factor.
2 more elements
A continuous analyte detection system, comprising:
- an analyte sensor comprising a membrane system, wherein the analyte sensor is configured to generate a measurement signal associated with a measurement analyte concentration in vivo and wherein the analyte sensor is further configured to generate a reference signal associated with a reference analyte concentration in vivo;
- a reference sensor located proximal to the analyte sensor and configured to generate a reference value associated with the reference analyte, wherein the reference sensor is located proximal to the analyte sensor;
- and
- a processor module configured to process the reference signal and the reference value to calibrate the measurement signal.
1 more element
Dependencies are inferred from the claim text.