Analyte sensor
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.
1. An analyte monitoring system, the system comprising:
an electrochemical bendable sensor configured to measure a level of an analyte in a tear from a patient,
wherein the sensor is configured to be secured to a portion of a patient's body in a bended configuration,
wherein the sensor is configured to be powered by inductive coupling, wherein the sensor comprises:
a first wire comprising a working electrode configured to generate a signal indicative of an analyte concentration,
a second wire comprising a reference electrode,
a third wire comprising a counter electrode,
wherein the first wire, the second wire, and the third wire are disposed in a triple-helix coiled configuration extending along a length of the sensor, and
a flexible material configured to swell when hydrated by the tear; and
sensor electronics configured to operatively connect to the sensor, wherein the sensor electronics are configured to process data obtained from the sensor.
2. The system of claim 1 , wherein the first wire, the second wire, and the third wire are formed of metal.
3. The system of claim 1 , wherein the first wire comprises platinum.
4. The system of claim 1 , wherein the second wire comprises silver/silver chloride.
5. The system of claim 1 , wherein the third wire comprises platinum.
6. The system of claim 1 , wherein the sensor further comprises a membrane comprising an enzyme configured to react with the analyte, wherein at least a portion of the working electrode is covered by the membrane.
7. The system of claim 6 , wherein the enzyme is configured to react with glucose to produce hydrogen peroxide.
8. The system of claim 7 , wherein the working electrode is configured to oxidize hydrogen peroxide to generate the signal indicative of the analyte concentration.
9. The system of claim 6 , wherein the membrane is disposed coaxially with the working electrode.
10. The system of claim 1 , wherein the analyte is glucose.
11. The system of claim 1 , wherein the sensor is configured to monitor the analyte continuously.