METHOD AND APPARATUS FOR PROVIDING DATA PROCESSING AND CONTROL IN MEDICAL COMMUNICATION SYSTEM

• US 20080288204A1
• Filed: 04/14/2008
• Published: 11/20/2008
• Est. Priority Date: 04/14/2007
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories)
• Inventors: Sloan, Mark K., Hayter, Gary, Fennell, Martin J.
• Granted Patent: US 9,204,827 B2
• Time in Patent Office: Days
• US Class Current: 702/130
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: A61B 5/01 Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue clinical contact thermometers G01K13/20
• CPC Class Codes: A61B 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61B 5/1486 using enzyme electrodes, e.g. with immobilised oxidase
• CPC Class Codes: A61B 5/4839 combined with drug delivery
• CPC Class Codes: A61B 5/6849 in combination with a needle set
• CPC Class Codes: A61B 5/7278 Artificial waveform generation or derivation, e.g. synthesising signals from measured signals A61B5/327 takes precedence
• CPC Class Codes: A61B 5/7435 Displaying user selection data, e.g. icons in a graphical user interface

Abstract

Methods and apparatus for providing data processing and control for use in a medical communication system are provided.

Claims

1. A method, comprising;

detecting a first temperature related signal from a first source;

detecting a second temperature related signal from a second source, the second source located at a predetermined distance from the first source; and

estimating an analyte temperature related signal based on the first and second detected temperature signals.

2. The method of claim 1 wherein the first source is located substantially in close proximity to a transcutaneously positioned analyte sensor.

3. The method of claim 2 wherein the first source is located approximately 0.75 inches from the analyte sensor.

4. The method of claim 1 wherein the analyte temperature related signal is estimated based on a predetermined value associated with the detected first and second temperature related signals.

5. The method of claim 4 wherein the predetermined value includes a ratio of thermal resistances associated with the first and second sources.

6. The method of claim 1 further including determining a glucose value based on the estimated analyte temperature related signal and a monitored analyte level.

7. The method of claim 1 wherein the second temperature related signal is related to an ambient temperature source.

8. An apparatus, comprising:

a housing;

an analyte sensor coupled to the housing and transcutaneously positionable under a skin layer of a user;

a first temperature detection unit coupled to the housing configured to detect a temperature associated with the analyte sensor; and

a second temperature detection unit provided in the housing and configured to detect an ambient temperature.

9. The apparatus of claim 8 wherein one or more of the first temperature detection unit or the second temperature detection unit includes one or more of a thermistor, a semiconductor temperature sensor, or a resistance temperature detector (RTD).

10. The apparatus of claim 8 further including a processor, wherein at least a portion of the second temperature detection unit is provided within the processor.

11. The apparatus of claim 8 further including a processor configured to receive the temperature associated with the analyte sensor, the ambient temperature, and an analyte related signal from the analyte sensor.

12. The apparatus of claim 11 wherein the processor is further configured to estimate an analyte temperature related signal based on the temperature associated with the analyte sensor, and the ambient temperature.

13. The apparatus of claim 12 wherein the processor is further configured to determine a glucose value based on the estimated analyte temperature related signal and an analyte related signal from the analyte sensor.

14. The apparatus of claim 12 wherein the analyte temperature related signal is estimated based on a predetermined value associated with the detected temperature associated with the analyte sensor, and the ambient temperature.

15. The apparatus of claim 14 wherein the predetermined value includes a ratio of thermal resistances associated with the temperature associated with the analyte sensor, and the ambient temperature.

16. The apparatus of claim 14 wherein the predetermined value is variable based an error feedback signal associated with the monitored analyte level by the analyte sensor.

17. The apparatus of claim 16 wherein the error feedback signal is associated with a difference between a blood glucose reference value and the analyte sensor signal.

18. The apparatus of claim 8 further including a transmitter unit configured to transmit one or more signals associated with the detected temperature associated with the analyte sensor, detected ambient temperature, an analyte related signal from the analyte sensor, analyte temperature related signal based on the temperature associated with the analyte sensor, and the ambient temperature, or a glucose value based on the estimated analyte temperature related signal and the analyte related signal from the analyte sensor.

19. The apparatus of claim 15 wherein the transmitter unit includes an rf transmitter.

20. A system, comprising:

a data receiver configured to receive a first temperature related signal from a first source, a second temperature related signal from a second source, the second source located at a predetermined distance from the first source; and

a processor operatively coupled to the data receiver, and configured to estimate an analyte temperature related signal based on the first and second detected temperature signals.