SYSTEM AND METHOD FOR CODING INFORMATION ON A BIOSENSOR TEST STRIP

• US 20110203925A1
• Filed: 04/27/2011
• Published: 08/25/2011
• Est. Priority Date: 04/01/2005
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Beaty, Terry A., Burke, David W., Celentano, Michael J.
• Granted Patent: US 8,182,764 B2
• Time in Patent Office: Days
• US Class Current: 204/406
• CPC Class Codes: B01L 2300/0825 Test strips
• CPC Class Codes: B01L 3/545 for laboratory containers
• CPC Class Codes: G01N 2035/00851 process control parameters
• 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 33/48771 Coding of information, e.g. calibration data, lot number

Abstract

The present invention provides a test strip for measuring a concentration of an analyte of interest in a biological fluid, wherein the test strip may be encoded with information that can be read by a test meter into which the test strip is inserted. In one embodiment, a first test strip comprises: a first measurement electrode connectable to a test meter; a first trace loop with a first associated resistance, where the first trace loop is connectable to the test meter; and a second trace loop with a second associated resistance, where the second trace loop is connectable to the test meter. The test meter is adapted to: receive the first test strip; connect to the first measurement electrode, the first trace loop, and the second trace loop; and obtain a first resistance ratio by comparing the first and second associated resistances.

Claims

1. A system for measuring a concentration of an analyte of interest in a biological fluid, comprising:

a test meter;

a first test strip with a first mask configuration, a first resistive element, and a

second resistive element, said first mask configuration comprising;

a first measurement electrode connectable to said test meter,

a first trace loop with a first associated resistance and a first gap, said first trace loop connectable to said test meter, and

a second trace loop with a second associated resistance and a second gap, said second trace loop connectable to said test meter;

wherein said first resistive element is conductively connected to said first trace loop and bridges said first gap; and

wherein said second resistive element is conductively connected to said second trace loop and bridges said second gap;

a second test strip with a second mask configuration, a third resistive element, and

a fourth resistive element, said second mask configuration being substantially similar to said first mask configuration, said second mask configuration comprising;

a second measurement electrode connectable to said test meter,

a third trace loop with a third associated resistance and a third gap, said third trace loop connectable to said test meter, and

a fourth trace loop with a fourth associated resistance and a fourth gap, said fourth trace loop connectable to said test meter;

wherein said third resistive element is conductively connected to said third trace loop and bridges said third gap; and

wherein said fourth resistive element is conductively connected to said fourth trace loop and bridges said fourth gap; and

wherein said test meter is adapted to;

receive said first and second test strips,

connect to said first and second measurement electrodes,

connect to said first and second trace loops,

obtain a first resistance ratio by comparing said first and second associated resistances,

connect to said third and fourth trace loops, and

obtain a second resistance ratio by comparing said third and fourth associated resistances.