Calibration code strip with permutative grey scale calibration pattern

• US 20070273901A1
• Filed: 05/26/2006
• Published: 11/29/2007
• Est. Priority Date: 05/26/2006
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson), LifeScan IP Holdings, LLC
• Original Assignee: LifeScan Scotland Limited (Johnson & Johnson)
• Inventors: McInulty, John, Baskeyfield, Damian Edward Haydon, Cronshaw, Anthony J., O'Reilly, Thomas J., Robinson, Grenville Arthur
• Granted Patent: US 7,586,590 B2
• Time in Patent Office: Days
• US Class Current: 358/1.900
• CPC Class Codes: A61B 2562/0295 Strip shaped analyte sensors for apparatus classified in A61B5/145 or A61B5/157 disposable multilayered or laminated electrodes G01N27/307; details of handling chemical test elements G01N33/4875
• CPC Class Codes: A61B 2562/085 combined with means for recording calibration data
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number

Abstract

A calibration strip for use with a package of test strips includes a substrate with and a permutative grey scale calibration pattern disposed on a surface of the substrate with the permutative grey scale calibration pattern including more than one grey scale region. Moreover, the grey scale regions of the calibration strip define a grey scale permutation that uniquely corresponds to a calibration code of test strips in a package associated with the calibration strip.

Claims

1. A calibration strip for use with a package of test strips, the calibration strip comprising:

a substrate with a surface; and

a permutative grey scale calibration pattern disposed on the surface of the substrate, the permutative grey scale calibration pattern including at least a first grey scale region and a second grey scale region,

wherein the first and second grey scale regions define a grey scale permutation that uniquely corresponds to a calibration code of test strips in a package associated with the calibration strip.

2. The calibration strip of claim 1 wherein the permutative grey scale calibration pattern includes two grey scale regions.

3. The calibration strip of claim 1 wherein the permutative grey scale calibration pattern includes a first grey scale region, a second grey scale region and a third grey scale region.

4. The calibration strip of claim 1 wherein the grey scale calibration pattern further includes at least one optics calibration region.

5. The calibration strip of claim 4 wherein the at least one optics calibration region has a black optics calibration region and a white optics calibration region.

6. The calibration strip of claim 5 wherein the at least one optics calibration region further has a 50% grey scale optics calibration region.

7. The calibration strip of claim 6 wherein the at least one optics calibration region further has a 25% grey scale optics calibration region and a 75% grey scale optics calibration region.

8. The calibration strip of claim 1 wherein the calibration strip has a paddle shape.