Method and apparatus for providing data processing and control in a medical communication system

• US 20080312841A1
• Filed: 05/14/2008
• Published: 12/18/2008
• Est. Priority Date: 05/14/2007
• Status: Active Grant

• Current Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: Abbott Diabetes Care Incorporated (Abbott Laboratories Incorporated)
• Inventors: Hayter, Gary
• Granted Patent: US 8,103,471 B2
• Time in Patent Office: Days
• US Class Current: 702/19
• CPC Class Codes: A61B 2560/0223 of calibration, e.g. protocols for calibrating sensors
• CPC Class Codes: A61B 2560/0252 using ambient temperature
• 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 5/14532 for measuring glucose, e.g. by tissue impedance measurement
• CPC Class Codes: A61B 5/1473 invasive, e.g. introduced into the body by a catheter A61B5/1482 takes precedence
• CPC Class Codes: A61B 5/1495 Calibrating or testing of in-vivo probes
• CPC Class Codes: G16H 10/40 for data related to laboratory analysis, e.g. patient specimen analysis
• CPC Class Codes: G16H 15/00 ICT specially adapted for medical reports, e.g. generation or transmission thereof
• CPC Class Codes: G16H 20/10 relating to drugs or medications, e.g. for ensuring correct administration to patients
• CPC Class Codes: G16H 40/40 for the management of medical equipment or devices, e.g. scheduling maintenance or upgrades
• CPC Class Codes: G16H 40/63 for local operation
• CPC Class Codes: G16H 50/50 for simulation or modelling of medical disorders

Abstract

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

Claims

1. A method of determining glucose trend information, comprising:

receiving a signal associated with a monitored analyte level from an in vivo analyte sensor;

retrieving a predetermined number of stored signals associated with the monitored analyte level;

determining glucose trend information based on the received signal and the retrieved predetermined number of stored signals; and

updating a prior trend information based on at least a portion of the retrieved predetermined number of prior analyte level signals.

2. The method of claim 1 wherein the trend information is determined based on a analyte sensor sensitivity.

3. The method of claim 2 wherein updating the prior trend information is based on the analyte sensor sensitivity.

4. The method of claim 2 wherein updating the prior trend information includes determining an updated analyte level of the at least a portion of the retrieved predetermined number of prior analyte levels based on the current analyte sensor sensitivity.

5. The method of claim 1 including displaying the updated prior trend information.

6. The method of claim 1 including modifying a current display of the trend information based on the updated prior trend information.

7. The method of claim 1 wherein each of the predetermined number of prior analyte level signals and the current analyte level signal are temporally separated by approximately one minute or less.

8. An apparatus, comprising:

a communication unit to receive an analyte level signal from an in vivo analyte sensor; and

a data processing unit coupled to the communication unit, the data processing unit configured to retrieve a predetermined number of stored analyte level signals, determine a trend information based on the current analyte level signal and the retrieved predetermined number of prior analyte level signals, and update a prior trend information based on at least a portion of the retrieved predetermined number of prior analyte level signals.

9. The apparatus of claim 8 wherein the trend information is determined based on analyte sensor sensitivity.

10. The apparatus of claim 9 wherein updating the prior trend information is based on the analyte sensor sensitivity.

11. The apparatus of claim 9 wherein updating the prior trend information includes determining an updated analyte level of the at least a portion of the retrieved predetermined number of stored analyte levels based on the analyte sensor sensitivity.

12. The apparatus of claim 8 including a display unit operatively coupled to the data processing unit to display one or more of the trend information, prior trend information or the updated prior trend information.

13. The apparatus of claim 8 wherein the data processing unit is configured to modify the display of the trend information based on the updated prior trend information.

14. The apparatus of claim 8 wherein each of the predetermined number of stored analyte level signals and the analyte level signal are temporally separated by a predetermined time period.

15. The apparatus of claim 14 wherein the predetermined time period includes a data transmission rate of the communication unit.

16. The apparatus of claim 15 wherein the communication unit is configured for wireless communication.

17. A method of determining glucose trend information, comprising:

receiving a signal related to a monitored analyte level from an in vivo analyte sensor;

retrieving at least one stored signal related to the monitored analyte level received from the analyte sensor;

determining a calibration scaling factor;

applying the determined calibration scaling factor to the received signal and to the retrieved at least one stored signal to generate scaled data; and

determining glucose trend information based on the generated scaled data.

18. The method of claim 17, wherein when the calibration scaling factor is applied to the retrieved at least one stored signal, the retrieved at least one stored signal is modified.

19. The method of claim 17, including storing the generated scaled data.

20. The method of claim 17 wherein determining the calibration scaling factor includes receiving a blood glucose measurement value.

21. The method of claim 20 including determining a sensitivity based on the received blood glucose measurement value and the received signal related to the monitored analyte level.

22. The method of claim 21 wherein the sensitivity is related to the calibration scaling factor.