No calibration analyte sensors and methods

• US 8,236,166 B2
• Filed: 04/25/2008
• Issued: 08/07/2012
• Est. Priority Date: 04/27/2007
• Status: Expired due to Fees

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Inventors: Karinka, Shridhara Alva, Wang, Yi
• Primary Examiner(s): Noguerola, Alex
• Application Number:
  US12/110,026
• Publication Number:
  US 20090011449A1
• Time in Patent Office: 1,565 Days
• Field of Search: 20440301-40315, 205/777.5, 205/778, 205/792
• US Class Current: 205/792
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number

Abstract

A meter and sensors, for use in combination, where no calibration code has to be entered by the user or is read by the meter. The meter is configured with a predetermined slope and y-intercept built into the meter. If the slope and y-intercept of the sensor are within a predetermined area or grid, or otherwise close to the slope and y-intercept of the meter, the batch of sensors is acceptable for use with that meter for providing accurate analyte concentration results.

Claims

1. A method of determining an analyte concentration in a sample, comprising:

providing a meter having a single defined slope value and single defined intercept value;

selecting a sensor from a plurality of sensor lots, said sensor having a slope value and an intercept value, wherein the slope value and the intercept value are equal to or substantially similar to the single defined slope and the single defined intercept;

inserting the sensor into the meter;

providing the sample to the sensor; and

determining the analyte concentration in the sample without communicating a calibration code to the meter.

2. The method of claim 1 wherein determining the analyte concentration in the sample without communicating the calibration code to the meter comprises determining the analyte concentration in the sample without the meter actively reading the calibration code.

3. The method of claim 1, wherein determining the analyte concentration in the sample without the meter actively reading the calibration code includes determining the analyte concentration in the sample without the meter actively reading the calibration code from the sensor or sensor package.

4. The method of claim 1, wherein selecting a sensor comprises selecting a sensor having a volume of no more than about 1 μ

L.

5. The method of claim 1, wherein selecting a sensor comprises selecting a sensor having a volume of no more than about 0.5 μ

L.

6. The method of claim 1, wherein selecting a sensor comprises selecting a sensor having a volume of no more than about 0.3 μ

L.

7. The method of claim 1, wherein selecting a sensor comprises selecting a sensor having a volume of no more than about 0.1 μ

L.

8. The method of claim 1, wherein selecting a sensor comprises selecting a tip-fill sensor.

9. The method of claim 1, wherein selecting a sensor comprises selecting a side-fill sensor.

10. The method of claim 1, wherein selecting a sensor comprises selecting a top-fill sensor.

11. The method of claim 1, wherein determining the analyte concentration in the sample comprises determining the concentration of analyte in the sample by coulometry.

12. The method of claim 1, wherein determining the analyte concentration in the sample comprises determining the concentration of analyte in the sample by amperometry.

13. The method of claim 1, wherein determining the analyte concentration in the sample comprises determining the concentration of analyte in the sample by potentiometry.

14. The method of claim 1, wherein determining the analyte concentration in the sample comprises determining a concentration of glucose in a sample of blood.