Analyte sensors and methods

• US 20080066305A1
• Filed: 10/30/2007
• Published: 03/20/2008
• Est. Priority Date: 08/01/2006
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Wang, Yi, Feldman, Benjamin
• Granted Patent: US 7,895,740 B2
• Time in Patent Office: Days
• US Class Current: 29/846
• CPC Class Codes: G01N 27/3271 Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood amperometry per se G01N27/49; aspects concerning the enzyme reagent C12Q1/001
• CPC Class Codes: G01N 27/3272 Test elements therefor, i.e. disposable laminated substrates with electrodes, reagent and channels optical biosensors G01N33/52
• CPC Class Codes: G01N 27/3274 Corrective measures, e.g. error detection, compensation for temperature or hematocrit, calibration coding of calibration information G01N33/48771
• CPC Class Codes: Y10T 29/49002 Electrical device making
• CPC Class Codes: Y10T 29/49004 including measuring or testing of device or component part
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing
• CPC Class Codes: Y10T 29/49126 Assembling bases
• CPC Class Codes: Y10T 29/49128 Assembling formed circuit to base
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.
• CPC Class Codes: Y10T 29/49135 and shaping, e.g., cutting or bending, etc.
• CPC Class Codes: Y10T 29/49155 Manufacturing circuit on or in base
• CPC Class Codes: Y10T 29/49156 with selective destruction of conductive paths
• CPC Class Codes: Y10T 29/49169 Assembling electrical component directly to terminal or elongated conductor
• CPC Class Codes: Y10T 29/49204 Contact or terminal manufacturing

Abstract

A sensor, and methods of making, for determining the concentration of an analyte, such as glucose, in a biological fluid such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. The sensor includes a working electrode and a counter electrode, and may include an insertion monitoring trace to determine correct positioning of the sensor in a connector. The sensor is calibration-adjusted, eliminating the need for a user to enter a calibration code or for the meter to read a calibration code.

Claims

1. A method of making a sensor comprising:

(a) providing a pre-sensor;

(b) physically altering the pre-sensor to provide a sensor that meets a pre-determined calibration code.

2. The method of claim 1 wherein pre-determined calibration code comprises a predetermined slope and y-intercept.

3. The method of claim 1, wherein physically altering the pre-sensor comprises:

(a) altering a volume of a sample chamber.

4. The method of claim 1, wherein physically altering the pre-sensor comprises:

(a) altering an electrode area.

5. The method of claim 1 further comprising:

(a) providing a second pre-sensor; and

(b) physically altering the second pre-sensor to provide a second sensor with the predetermined calibration code.

6. The method of claim 1 further comprising:

(a) forming a second sensor that meets the pre-determined calibration code.