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US 11,627,900 B2Granted
Analyte sensor
AssigneeDexCom, Inc.
InventorsPeter C Simpson, Ying Li, Apurv U Kamath, Richard Yang
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.
Claims30
An analyte sensor system, the system comprising:
- a transcutaneous analyte sensor comprising:
- an ex vivo portion configured to remain outside of a body of a host;
- and
- an in vivo portion configured to be inserted into the body of the host, wherein the in vivo portion comprises:
- an electrode;
- and
- a membrane disposed over at least a portion of the electrode;
- at least one processor configured to operably connect with the transcutaneous analyte sensor;
- and
- a memory configured to operably connect with the at least one processor, the memory storing a calibration equation that includes a factor based at least in part on a measured characteristic of the membrane, wherein the factor is determined prior to insertion of the transcutaneous analyte sensor into the body of the host,
- wherein the at least one processor is configured to calculate an analyte concentration by applying the calibration equation to data received from the transcutaneous analyte sensor.
8 more elements
An analyte sensor system, the system comprising:
- a transcutaneous analyte sensor comprising:
- an ex vivo portion configured to remain outside of a body of a host;
- and
- an in vivo portion configured to be inserted into the body of the host, wherein the in vivo portion comprises:
- an electrode;
- and
- a membrane disposed over at least a portion of the electrode;
- at least one processor configured to operably connect with the transcutaneous analyte sensor;
- and
- a memory configured to operably connect with the at least one processor, the memory storing a factor determined at least in part on a comparison between a measured membrane characteristic of the transcutaneous analyte sensor and a membrane characteristic of at least one other analyte sensor,
- wherein the factor is determined prior to insertion of the transcutaneous analyte sensor into the body of the host,
- wherein the at least one processor is configured to use the factor for calibrating sensor data.
9 more elements
A method of monitoring an analyte, the method comprising:
- beginning a sensor session associated with use of a transcutaneous analyte sensor, wherein the transcutaneous analyte sensor comprises:
- an ex vivo portion configured to remain outside of a body of a host;
- and
- an in vivo portion, wherein the in vivo portion comprises:
- an electrode;
- and
- a membrane disposed over at least a portion of the electrode;
- storing a calibration equation associated with the transcutaneous analyte sensor in a memory, the calibration equation including a factor based at least in part on a measured characteristic of the membrane, wherein the factor is determined prior to insertion of the transcutaneous analyte sensor into the body of the host;
- and
- processing, using at least one processor, data derived at least in part from the transcutaneous analyte sensor, wherein the processing comprises applying the calibration equation to the data derived at least in part from the transcutaneous analyte sensor to calculate at least one analyte concentration.
7 more elements
A method of monitoring an analyte, the method comprising:
- beginning a sensor session associated with use of a transcutaneous analyte sensor, wherein the transcutaneous analyte sensor comprises:
- an ex vivo portion configured to remain outside of a body of a host;
- and
- an in vivo portion, wherein the in vivo portion comprises:
- an electrode;
- and
- a membrane disposed over at least a portion of the electrode;
- storing a factor associated with the transcutaneous analyte sensor in a memory, the factor determined at least in part on a comparison between a measured membrane characteristic of the transcutaneous analyte sensor and a membrane characteristic of at least one other analyte sensor;
- and
- processing, using at least one processor, data derived at least in part from the transcutaneous analyte sensor, wherein the processing comprises using the factor to calculate at least one analyte concentration based on data derived at least in part from the transcutaneous analyte sensor.
7 more elements
Dependencies are inferred from the claim text.