Infusion pump system

• US 7,938,797 B2
• Filed: 05/05/2008
• Issued: 05/10/2011
• Est. Priority Date: 05/05/2008
• Status: Active Grant

• Current Assignee: Insulet Corporation, M2 Medical Group Holdings, Inc.
• Original Assignee: Asante Solutions, Inc
• Inventors: Estes, Mark C.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): PATEL, PRITESH ASHOK
• Application Number:
  US12/115,008
• Publication Number:
  US 20090275887A1
• Time in Patent Office: 1,100 Days
• Field of Search: None
• US Class Current: 604/66
• CPC Class Codes: A61M 2202/07 Proteins
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/16831 Monitoring, detecting, signalling or eliminating infusion flow anomalies low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00

Abstract

Some embodiments of a portable infusion pump system can be configured to can be configured to adjust the sensitivity of particular detectors or alert systems based (at least in part) on information received from a monitoring device. For example, a glucose monitoring device can communication with an infusion pump assembly used to supply insulin or another medication to a user. In such circumstances, the data received from the monitoring device can be used to adjust the sensitivity of an occlusion detection system.

Claims

1. A medical infusion pump system, comprising:

a portable pump housing that receives an insulin medicine for dispensation to a user, the pump housing at least partially containing a pump drive system to dispense the insulin medicine through a flow path to the user;

a controller that activates the pump drive system to dispense the insulin medicine from the portable pump housing, the controller operating an occlusion detection system that detects a fluid condition in the flow path, the occlusion detection system having an adjustable sensitivity, wherein the controller outputs an occlusion alarm to the user when an occlusion is detected in the flow path; and

a monitoring device that communicates glucose information to the controller, the glucose information being indicative of a blood glucose level of the user,

wherein the sensitivity of the occlusion detection system is adjusted in response to the glucose information received by the controller from the monitoring device.

2. The system of claim 1, wherein the controller adjusts the sensitivity of the occlusion detection system when the glucose information received by the controller from the monitoring device indicates that the blood glucose level of the user is outside of a normal range.

3. The system of claim 1, wherein the sensitivity of the occlusion detection system is increased in response to glucose information received by the controller that indicates the user'"'"'s blood glucose level is greater than a predetermined value.

4. The system of claim 3, wherein when the sensitivity of the occlusion detection system is increased, the controller outputs an alarm via a user interface to indicate a blood glucose level that is outside of a normal range.

5. The system of claim 4, wherein when the sensitivity of the occlusion detection system is increased, the controller outputs an alarm via the user interface to indicate a change to the occlusion detection system.

6. The system of claim 1, wherein the sensitivity of the occlusion detection system is increased in response to glucose information received by the controller that indicates the user'"'"'s blood glucose level is rising at a rate greater than a predetermined rate.

7. The system of claim 6, wherein when the sensitivity of the occlusion detection system is increased, the controller outputs an alarm via a user interface to indicate a change to the occlusion detection system.

8. The system of claim 1, wherein the sensitivity of the occlusion detection system is decreased in response to glucose information received by the controller that indicates the user'"'"'s blood glucose level is less than a predetermined value.

9. The system of claim 8, wherein when the sensitivity of the occlusion detection system is decreased, the controller outputs an alarm via a user interface to indicate a blood glucose level that is outside of a normal range.

10. The system of claim 1, wherein the sensitivity of the occlusion detection system is decreased in response to glucose information received by the controller that indicates the user'"'"'s blood glucose level is decreasing at a rate greater than a predetermined rate.

11. The system of claim 10, wherein when the sensitivity of the occlusion detection system is decreased, the controller outputs an alarm via a user interface to indicate a change to the occlusion detection system.

12. The system of claim 1, wherein the controller comprises a controller housing that removably attaches to the pump housing, the controller being in electrical communication with the pump drive system when the controller housing is removably attached to the pump housing.

13. The system of claim 12, wherein the controller comprises a user interface that includes a display device and a plurality of buttons.

14. The system of claim 12, wherein the controller is a reusable device and the pump housing and pump drive system are disposable and nonreusable.

15. The system of claim 1, wherein the flow path of the insulin medicine comprises a reservoir in which the insulin medicine is retained, at least a portion of a cap device that secures to the pump housing, and an infusion set tube that extends from the cap device to the user.

16. The system of claim 1, wherein the occlusion detection system comprises at least one of a pressure transducer and a pressure switch to communicate signals to the controller indicative of fluid pressure in the flow path of the insulin medicine.

17. The system of claim 1, wherein the occlusion detection system comprises an optical sensor arranged proximate to the flow path of the insulin medicine.

18. The system of claim 1, wherein the monitoring device comprises a portable housing wearable on the user'"'"'s skin, a sensor shaft that penetrates into the user'"'"'s skin, and a wireless communication device to transmit the glucose information to a wireless communication device of the controller.

19. A method of operating the medical infusion pump system of claim 1, comprising:

activating the occlusion detection system to detect the fluid condition in the flow path extending from a medicine reservoir in the portable pump housing to the user;

receiving the glucose information from the monitoring device, the glucose information being indicative of a detected blood glucose level of the user;

adjusting the adjustable sensitivity of the occlusion detection system in response to receiving the glucose information from the monitoring device; and

outputting the occlusion alarm to the user when the occlusion is detected in the flow path.

20. The method of claim 19, wherein the sensitivity of the occlusion detection system is increased in response to the glucose information received from the monitoring device that indicates the detected blood glucose level is greater than a predetermined value.

21. The method of claim 20, further comprising outputting an alarm via a user interface to indicate the detected blood glucose level is outside of a predetermined range.

22. The system of claim 19, wherein the sensitivity of the occlusion detection system is increased in response to the glucose information received from the monitoring device that indicates the detected blood glucose level is rising at a rate greater than a predetermined rate.

23. The method of claim 19, wherein the sensitivity of the occlusion detection system is decreased in response to the glucose information received from the monitoring device that indicates the detected blood glucose level is less than a predetermined value.

24. The method of claim 19, wherein the sensitivity of the occlusion detection system is decreased in response to the glucose information received from the monitoring device that indicates the detected blood glucose level is decreasing at a rate greater than a predetermined rate.