Auto-calibrating metering system and method of use

• US 8,001,825 B2
• Filed: 11/30/2007
• Issued: 08/23/2011
• Est. Priority Date: 11/30/2007
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Lifescan Incorporated (Duv Holding Corporation)
• Inventors: Karunaratne, Arjuna, Leong, Koon-wah, Pugh, Jerry T.
• Primary Examiner(s): Rogers; David A.
• Application Number:
  US11/947,964
• Publication Number:
  US 20090139300A1
• Time in Patent Office: 1,362 Days
• Field of Search: 73/10.1, 73/10.2, 734/31, 221260-272, 422/58, 422/61, 422/50, 422/55, 422/87, 422/400, 422/401, 422/403, 422/404, 600/365, 600/309, 600/316, 600/345, 600/347, 205/792
• US Class Current: 73/1.02
• CPC Class Codes: G01N 33/48771 Coding of information, e.g. calibration data, lot number

Abstract

Methods of auto-calibrating a meter are disclosed. In one aspect, the method can include determining a set of calibration information applicable to a sensor and storing the calibration information onto a tag element associated with a sensor dispenser. The tag element can be placed into communication with a reader element that is associated with a meter and which is configured to receive the calibration information so as to allow the meter to use the calibration information in a calibration procedure. Various aspects of a system for auto-calibrating a meter are also disclosed.

Claims

1. A method of auto-calibrating a meter, comprising:

providing a set of sensors wherein different sub-sets of the sensors are associated with different calibration information;

determining a set of calibration information applicable to each sub-set of the set of sensors, wherein said determination includes individually testing each of the sub-set of sensors in order to determine their respective calibration;

storing onto a tag element each of the different sets of calibration information as well as sensor type information;

associating the tag element with a sensor dispenser; and

disposing a plurality of sensors from two or more of the sub-sets of sensors within a sensor dispenser, the sensor dispenser configured to deliver one sensor to a meter upon demand; and

placing the tag element into communication with a reader element associated with the meter, the reader element configured to receive information from the tag element and to allow for the information to be utilized in a meter auto-calibration procedure and a sensor type identification procedure.

2. The method of claim 1, wherein the tag element is an RF tag.

3. The method of claim 2, wherein the receiver element is an RF receiver.

4. The method of claim 1, further comprising:

following the placing step, activating the receiver element thereby allowing the receiver element to communicate with the tag element.

5. The method of claim 1, further comprising:

following the placing step, activating the tag element thereby allowing the receiver element to communicate with the tag element.

6. The method of claim 1, wherein the tag element is further configured to receive information from the reader element, and the reader element is further configured to store information capable of being read by the tag element.

7. The method of claim 1, wherein the meter is configured to determine a glucose concentration of a blood sample.

8. The method of claim 1, wherein the sensor dispenser is substantially cylindrical with the tag element coupled to a distal end of the dispenser, the distal end of the dispenser configured to releasably engage the meter such that the reader element coupled to the meter is in communication with the tag element when the meter is engaged to the sensor dispenser.

9. A method of measuring an analyte concentration in a blood sample, comprising:

utilizing a set of sensors wherein different sub-sets of the sensors are associated with different calibration information;

utilizing a sensor dispenser having a plurality of sensors from two or more of the sub-sets of sensors disposed therein, the sensor dispenser configured to deliver one sensor to a meter upon demand, the sensor dispenser associated with a tag element that stores a set of calibration information applicable to each sub-set of sensors as well as sensor type information;

positioning a meter into communication with the sensor dispenser such that a reader element associated with the meter can receive information from the tag element thereby allowing the meter to perform an auto-calibration step and a sensor type identification step which are at least partially dependent upon the information;

transferring a sensor from the sensor dispenser to the meter;

removing the meter from communication with the sensor dispenser;

applying a biological sample to the sensor; and

performing a desired analysis of the sample.

10. The method of claim 9, wherein the desired analysis includes identification of an analyte within a blood sample.

11. The method of claim 10, wherein the analyte is glucose.

12. The method of claim 9, wherein the tag element is an RF tag.

13. The method of claim 12, wherein the receiver element is an RF receiver.

14. A system for auto-calibration of a meter, comprising:

a set of sensors wherein different sub-sets of the sensors are associated with different calibration information;

a sensor dispenser configured to retain a plurality of sensors from two or more of the sub-sets of sensors, the sensor dispenser configured to deliver one sensor to a meter upon demand, the sensor dispenser associated with a tag element that stores a set of calibration information applicable to each sub-set of sensors as well as sensor type information; and

a meter configured to receive a sensor from the sensor dispenser, the meter further associated with a reader element configured to communicate with the tag element as the reader element and tag element are brought into communication thereby allowing the meter to perform an auto-calibration step and a sensor type identification step which are at least partially dependent upon the information received from the tag element.

15. The system of claim 14, wherein the tag element is an RF tag.

16. The system of claim 15, wherein the reader element is an RF reader element.

17. The system of claim 14, wherein the meter is configured to determine a glucose concentration present in a blood sample.

18. The system of claim 14, wherein the meter further includes a counter element configured to determine a number of sensors received from a particular sensor dispenser.

19. A system for auto-calibration of a meter, comprising:

a set of sensors wherein different sub-sets of the sensors are associated with different calibration information

a sensor dispenser configured to house a plurality of sensors from two or more of the sub-sets of sensors, the sensor dispenser configured to deliver one sensor to a meter upon demand; and

a tag element associated with the sensor dispenser, the tag element storing a set of calibration information applicable to each sub-set of sensors as well as sensor type information, wherein said information is determined by identifying a sub-set of sensors related to the plurality of sensors, and individually testing each of the sub-set of sensors in order to determine the set of information from the sub-set of sensors, the tag element further configured to communicate the information to a meter.

20. The system of claim 19, wherein the tag element can wirelessly communicate the information to a meter.

21. The system of claim 20, wherein the tag element is a RF tag element configured to communicate the information to a meter via wireless RF technology.

22. The system of claim 21, wherein the meter is configured to perform an auto-calibration step which is at least partially dependent upon the information received from the tag element.

23. A system for auto-calibration of a meter, comprising:

a set of sensors wherein different sub-sets of the sensors are associated with different calibration information

a sensor dispenser configured to house a plurality of sensors from two or more of the sub-sets of sensors, the sensor dispenser configured to deliver one sensor to a meter upon demand;

a tag element associated with the sensor dispenser, the tag element storing the different sets of information as well as sensor type information, wherein said information is determined by identifying a sub-set of sensors related to the plurality of sensors, and individually testing each of the sub-set of sensors in order to determine the set of sensor-specific information from the sub-set of sensors;

a meter configured to receive a sensor from the sensor dispenser; and

a reader element associated with the meter, the reader element configured to receive an amount of the sensor-specific information from the sensor dispenser.