Error detection and rejection for a diagnostic testing system

• US 9,029,157 B2
• Filed: 04/12/2007
• Issued: 05/12/2015
• Est. Priority Date: 04/12/2007
• Status: Active Grant

• Current Assignee: Trividia Health, Inc. (Sinocare, Inc.)
• Original Assignee: Nipro Diagnostics, Inc.
• Inventors: Modzelewski, Brent E., Kayihan, Ferhan, Cardello, Edward
• Primary Examiner(s): SIEFKE, SAMUEL P
• Application Number:
  US11/734,473
• Publication Number:
  US 20080254544A1
• Time in Patent Office: 2,952 Days
• Field of Search: 436/43, 422/68.1
• US Class Current: 436/43
• CPC Class Codes: G01N 2035/00851 process control parameters
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number
• CPC Class Codes: G01N 35/00732 Identification of carriers, materials or components in automatic analysers
• CPC Class Codes: G06F 11/0763 by bit configuration check, e.g. of formats or tags
• CPC Class Codes: Y10T 436/11 Automated chemical analysis

Abstract

A system for measuring a property of a sample is provided. The system comprises a diagnostic measuring device having a memory and a diagnostic test strip for collecting the sample. The strip has embedded thereon a pattern representative of at least first data and second data, the first data being data representing at least one of parameters related to measuring the property, codes usable for calibration of the diagnostic measuring device, or parameters indicating proper connection between the measuring device and the test strip and the second data usable for detecting and rejecting potential errors affecting the proper measurement of the property.

Claims

1. A system for measuring a property of a sample, comprising:

a diagnostic test strip for collecting the sample, the strip comprising two or more contacting pads, each contacting pad having a predefined electrical conductivity, and wherein the electrical conductivity of the two or more contacting pads form a code that represents information particular to the test strip;

a diagnostic measuring device configured to receive the test strip, read the code particular to the test strip, and measure the sample; and

the diagnostic measuring device further comprising a processor programmed to execute an error detection routine for detecting errors in the code comprising;

comparing the code to a predetermined set of acceptable codes indicative of no error or acceptable level of error,

wherein the predetermined set of acceptable codes is a set of potential codes reduced by excluding predetermined one or more codes having a probability of being misread by the diagnostic measuring device due to a defect associated with one or more contacting pads of the two or more contacting pads; and

indicating an error if the code particular to the test strip is not in the predetermined set of acceptable codes.

2. The system according to claim 1, further comprising machine readable media wherein the error detection routine comprises an error detection algorithm located on said media, the error detection algorithm detecting errors in the information read by the diagnostic measuring device.

3. The system according to claim 2, wherein the information comprises a code having a code value, the code having a plurality of units, each unit having a unit value, and wherein the code value comprises a combination of the unit values.

4. The system according to claim 3, wherein the unit values include digital bits, analog readings, symbols, or pictograms.

5. The system according to claim 3, wherein the error detection algorithm comprises comparing the code value to a predetermined set of acceptable code values, wherein if the code value is not contained in the predetermined set of acceptable code values, the error detection algorithm indicates that there is an error in the code.

6. The system according to claim 3, wherein the error detection algorithm comprises comparing the unit values to a predetermined set of acceptable unit values, wherein if a predetermined number of unit values are not contained in the predetermined set of acceptable unit values, the error detection algorithm indicates that there is an error in the code.

13. The system according to claim 3, wherein the unit value is represented by a contacting pad of the two or more contacting pads.

14. The system according to claim 13, wherein the predetermined code includes one or more predetermined code values or one or more predetermined unit values having a probability of being misread by the diagnostic measuring device due to a defect associated with the contacting pad of the two or more contacting pads.

15. The system according to claim 14, wherein each unit value is represented by a single contacting pad.

7. A method of determining a constituent level within a fluid comprising:

providing a diagnostic test meter, the test meter comprising a memory and a processor;

providing a diagnostic test strip, the test strip comprising two or more contacting pads, each contacting pad having a predefined electrical conductivity, and wherein the electrical conductivity of the two or more pads form at least one code that represents information particular to the test strip;

inserting the test strip into the test meter, the test meter reading the at least one code;

performing an error detection and rejection algorithm on the at least one code, comprising

comparing the at least one code to a predetermined set of acceptable codes indicative of no error or acceptable level of error,

wherein the predetermined set of acceptable codes is a set of potential codes reduced by excluding a predetermined one or more codes having a probability of being misread by the diagnostic measuring device due to a defect associated with one or more contacting pads of the two or more contacting pads; and

indicating an error if the code particular to the test strip is not in the predetermined set of acceptable codes; and

determining the constituent level of the fluid if the error detection and rejection algorithm does not detect an error.

8. The method according to claim 7, wherein the at least one code has a code value, the code having a plurality of units, each unit having a unit value, and wherein the code value comprises a combination of the unit values.

9. The method according to claim 8, wherein the unit values include digital bits, analog readings, symbols, or pictograms.

10. The method according to claim 8, wherein performing an error detection and rejection algorithm comprises:

comparing the code value to a predetermined set of acceptable code values, wherein if the code value is not contained in the predetermined set of acceptable code values, the error detection algorithm indicates that there is an error in the code.

11. The method according to claim 8, wherein performing an error detection and rejection algorithm comprises:

comparing the unit values to a predetermined set of acceptable unit values, wherein if a predetermined number of unit values are not contained in the predetermined set of acceptable unit values, the error detection algorithm indicates that there is an error in the code.

12. The method of claim 7, wherein performing an error detection and rejection algorithm further comprises automatically correcting the error.

16. The method according to claim 7, the unit value is represented by a contacting pad of the two or more contacting pads.

17. The method according to claim 16, wherein the predetermined code includes one or more predetermined code values or one or more predetermined unit values having a probability of being misread by the diagnostic measuring device due to a defect associated with the contacting pad of the two or more contacting pads.

18. The method according to claim 17, wherein each unit value is represented by a single contacting pad.