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US 8,298,158 B2Granted
Integrated devices having extruded electrode structures and methods of using same
AssigneeAbbott Diabetes Care Inc.
InventorsSongbiao Zhang, John C. Mazza
Life of this patent
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Abstract
The present disclosure provides electrode structures and integrated electrode structures having one or more conductive materials coextruded with one or more dielectric materials. The disclosed electrode structures can be configured for use as analyte sensors. Also provided, are methods of making and using the electrode structures and integrated electrode structures described herein.
Claims28
An integrated lancet and electrode structure, comprising:
- a housing, comprising an extruded electrode structure, the extruded electrode structure comprising:
- a first extruded body comprising a first conductive material coextruded with a first dielectric material, wherein the first extruded body comprises a first channel;
- a second extruded body comprising a second conductive material coextruded with a second dielectric material, wherein the second extruded body comprises a second channel,
- wherein the first extruded body and the second extruded body are engaged to provide the extruded electrode structure,
- wherein the first conductive material is separated from the second conductive material by a space between the first extruded body and the second extruded body, wherein the space provides a reaction chamber, and
- wherein the first and second channels together define a lumen having a first opening and a second opening, wherein the lumen is adjacent to and in fluid communication with the reaction chamber, and wherein the lumen does not include the first and second conductive materials;
- and
- a lancet slidably positioned within the lumen, such that the lancet is capable of being extended through the lumen to expose the lancet and retracted to a position within the lumen such that the lancet is not exposed.
5 more elements
A method for determining a concentration of an analyte in a fluid sample from a subject, the method comprising:
- lancing the subject using an integrated lancet and electrode structure to provide a fluid sample, the integrated lancet and electrode structure comprising:
- a housing, comprising an extruded electrode structure, the extruded electrode structure comprising:
- a first extruded body comprising a first conductive material coextruded with a first dielectric material, wherein the first extruded body comprises a first channel;
- a second extruded body comprising a second conductive material coextruded with a second dielectric material, wherein the second extruded body comprises a second channel,
- wherein the first extruded body and the second extruded body are engaged to provide the extruded electrode structure,
- wherein the first conductive material is separated from the second conductive material by a space between the first extruded body and the second extruded body, wherein the space provides a reaction chamber, and
- wherein the first and second channels together define a lumen having a first opening and a second opening, wherein the lumen is adjacent to and in fluid communication with the reaction chamber, and wherein the lumen does not include the first and second conductive materials;
- a lancet slidably positioned within the lumen, such that the lancet is capable of being extended through the lumen to expose the lancet and retracted to a position within the lumen such that the lancet is not exposed, and
- wherein the first conductive material comprises a working electrode and the second conductive material comprises a reference/counter electrode, the working electrode comprising an analyte responsive enzyme disposed on, in or proximate thereto;
- contacting the fluid sample with the electrode structure;
- generating a sensor signal at the working electrode;
- and
- determining the concentration of the analyte using the sensor signal.
10 more elements
Dependencies are inferred from the claim text.