Insulin pump having correction factors

• US 8,998,878 B2
• Filed: 05/22/2012
• Issued: 04/07/2015
• Est. Priority Date: 10/17/2006
• Status: Active Grant

• Current Assignee: Tandem Diabetes Care Incorporated
• Original Assignee: Tandem Diabetes Care Incorporated
• Inventors: Blomquist, Michael L.
• Primary Examiner(s): FLICK, JASON E
• Application Number:
  US13/477,684
• Publication Number:
  US 20120232521A1
• Time in Patent Office: 1,050 Days
• Field of Search: 604/66
• US Class Current: 604/504
• CPC Class Codes: A61M 2202/07 Proteins
• CPC Class Codes: A61M 2205/35 Communication
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: G06F 3/0482 Interaction with lists of selectable items, e.g. menus
• CPC Class Codes: G06F 3/04842 Selection of displayed objects or displayed text elements G06F3/0482 takes precedence
• CPC Class Codes: G06F 3/04847 Interaction techniques to control parameter settings, e.g. interaction with sliders or dials
• CPC Class Codes: G16H 20/17 delivered via infusion or injection
• CPC Class Codes: G16H 40/63 for local operation

Abstract

Methods of regulating blood glucose levels using an insulin pump are disclosed. A method includes receiving a current blood glucose level, and determining whether the current blood glucose level is above a threshold value. The method also includes calculating a correction bolus value based upon the current blood glucose.

Claims

1. A method of regulating blood glucose levels using an insulin pump, the method comprising:

receiving a current blood glucose level at an insulin pump;

determining whether the current blood glucose level is above a threshold value with the insulin pump; and

upon determining that the current blood glucose level is above the threshold, automatically calculating a revised correction bolus value with the pump from a preexisting correction bolus value, both the revised correction bolus value and the preexisting correction bolus value being calculated based upon the current blood glucose level.

2. The method of claim 1, further comprising delivering the revised correction bolus to a user.

3. The method of claim 1, wherein calculating the revised correction bolus value includes altering a correction bolus calculation factor according to at least one predefined rule based on the threshold value and calculating the revised correction bolus value using the altered correction bolus calculation factor.

4. The method of claim 1, wherein calculating the revised correction bolus value includes increasing the correction bolus value by a predefined amount based on the threshold value.

5. The method of claim 4, wherein the predefined amount is a percentage of the preexisting correction bolus value.

6. The method of claim 5, further comprising prompting a user to input the percentage and the threshold value to define the rule.

7. The method of claim 6, further comprising prompting the user to define a plurality of rules.

8. The method of claim 6, wherein the pump prompts the user.

9. The method of claim 6, wherein a computing system interfaced with the pump prompts the user.

10. The method of claim 4, further comprising displaying the predefined amount on a display of the insulin pump.

11. The method of claim 1, further comprising displaying the revised correction bolus value on a display of the insulin pump.

12. The method of claim 1, wherein calculating a revised correction bolus value is further based on an insulin absorption model selected from a plurality of insulin absorption models.

13. An insulin pump comprising:

a pump mechanism;

a memory configured to store one or more blood glucose levels;

a programmable circuit arranged to control the pump mechanism and operatively connected to the memory, the programmable circuit programmed to;

receive a current blood glucose level;

determine whether the current blood glucose level is above a threshold value; and

upon determining that the current blood glucose level is above the threshold value, automatically calculate a revised correction bolus value from a preexisting correction bolus value, both the revised correction bolus value and the preexisting correcting bolus value being calculated based upon the current blood glucose level.

14. The insulin pump of claim 13, wherein the programmable circuit is further programmed to deliver the revised correction bolus to a user.

15. The insulin pump of claim 13, wherein calculating the revised correction bolus value includes altering a correction bolus calculation factor according to at least one predefined rule based on the threshold value.

16. The insulin pump of claim 15, wherein the programmable circuit is further programmed to calculate the revised correction bolus value using the altered correction bolus calculation factor.

17. The insulin pump of claim 13, wherein calculating the revised correction bolus value includes increasing the correction bolus value by a predefined amount based on the threshold value.

18. The insulin pump of claim 17, wherein the predefined amount is a percentage of the preexisting correction bolus value.

19. The insulin pump of claim 18, wherein the programmable circuit is further programmed to prompt a user to input the percentage and the threshold value to define a rule.

20. The insulin pump of claim 19, wherein the programmable circuit is further programmed to prompt the user to define a plurality of rules.

21. An insulin pump comprising:

a pump mechanism;

a memory configured to store one or more rules, each rule including a threshold value and a percentage;

a programmable circuit arranged to control the pump mechanism and operatively connected to the memory, the programmable circuit programmed to;

prompt a user to input the threshold value and the percentage for at least one rule;

receive a current blood glucose level;

determine whether the current blood glucose level is above the threshold value;

upon determining that the current blood glucose level is above the threshold value, automatically alter a preexisting correction bolus calculation factor representing an amount the user'"'"'s blood glucose level drops for each unit of delivered insulin according to the at least one rule to define an altered correction bolus calculation factor;

calculate a correction bolus value based upon the altered correction bolus calculation factor; and

deliver the correction bolus to the user.