Activity Sensing Techniques for an Infusion Pump System

• US 20090069787A1
• Filed: 09/07/2007
• Published: 03/12/2009
• Est. Priority Date: 09/07/2007
• Status: Active Grant

• Current Assignee: Insulet Corporation, M2 Medical Group Holdings, Inc.
• Original Assignee: M2 Medical A/S
• Inventors: Estes, Mark C., Ruppert, Deb
• Granted Patent: US 7,935,076 B2
• Time in Patent Office: Days
• US Class Current: 604/503
• CPC Class Codes: A61M 2005/14208 with a programmable infusion control system, characterised by the infusion program
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2005/31518 designed to reduce the overall size of an injection device, e.g. using flexible or pivotally connected chain-like rod members
• CPC Class Codes: A61M 2202/04 Liquids
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2230/005 Parameter used as control input for the apparatus
• CPC Class Codes: A61M 2230/201 Glucose concentration
• CPC Class Codes: A61M 2230/63 Motion, e.g. physical activity
• CPC Class Codes: A61M 5/1413 Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: G16H 20/17 delivered via infusion or injection
• CPC Class Codes: G16H 40/67 for remote operation

Abstract

Some embodiments of a wearable infusion pump system can include a pump device having a drive system to dispense a medicine to a user, an activity sensor that detects a possible change in an activity level of the user, and a controller to activate the drive system to dispense the medicine to the user. The controller device can query the user to indicate whether a detected activity level of the user represents an actual change in the activity level of the user. The controller device can alter the medicine dispensing schedule based on the user indicated changes in activity level.

Claims

1. A wearable infusion pump system, comprising:

a pump device including a drive system to dispense a medicine to a user;

an activity sensor to detect signals indicative of an activity level of the user; and

a controller to activate the drive system to dispense the medicine to the user based on a medicine dispensing schedule, the controller to query the user to indicate whether a detected activity level of the user represents an actual activity level of the user and to alter the medicine dispensing schedule based on the user-indicated activity level.

2. The system of claim 1, wherein the controller comprises a user interface to query the user regarding a detected activity level.

3. The system of claim 1, further comprising a body-worn glucose sensor device.

4. The system of claim 3, wherein the body-worn glucose sensor device comprises the activity sensor.

5. The system of claim 1, wherein the pump device comprises a pump housing that defines a space that extends in a longitudinal direction to receive the medicine.

6. The system of claim 5, wherein the pump device is removably attached to the controller device by guided movement of the pump device relative to the controller device in the longitudinal direction.

7. The system of claim 1, wherein a first electrical connector of the pump device mates with a second electrical connector of the controller when the controller and the pump device are removably attached in a fixed relationship.

8. A method of administering medicinal fluid to a user, comprising:

delivering a medicinal fluid from a wearable pump system to the user;

detecting an activity level of the user using an activity sensor in the pump system;

querying the user on a user interface of the pump system to indicate whether the detected activity level of the user represents an actual activity level of the user; and

adjusting the delivery of medicinal fluid from the pump system to the user in response to the user input that confirms the detected activity level represents the actual activity level of the user.

9. The method of claim 8, wherein detecting the activity level of the user using the activity sensor in the pump system includes detecting whether the user entered data into the pump system and determining if a detected motion of the pump system is within a threshold range of time from when the user entered data into the pump system, wherein the motion of the pump system is ignored if the motion of the pump system is within the threshold range of time from when the user entered data into the pump system.

10. The method of claim 8, further comprising determining whether the exercise could be dangerous.

11. The method of claim 10, wherein querying the user includes indicating to the user that exercise could be dangerous.

12. The method of claim 10, wherein querying the user includes requesting the user perform a blood test and to input that data.

13. The method of claim 10, wherein querying the user includes suggesting that the user delay exercise.

14. The method of claim 8, wherein the method further comprises detecting a blood glucose level.

18. The method of claim 10, wherein the method further comprises detecting a blood glucose level.

15. A method of administering medicinal fluid to a user experiencing a seizure, comprising:

delivering a medicinal fluid from a wearable pump system to the user;

determining if the user is having a seizure by detecting an increased motion level of the user above a threshold motion level using an motion sensor in the pump system and detecting whether the user is lying horizontally; and

adjusting the delivery of medicinal fluid from the pump system to the user in response to a detected seizure.

16. The method of claim 15, wherein adjusting the delivery of medicinal fluid comprises discontinuing the delivery of medicinal fluid form to the user.

17. The method of claim 15, wherein determining if the user is having a seizure includes detecting whether a detected motion level is within a threshold range of time of the user entered data into the pump system, wherein the motion of the pump system is ignored if the motion of the pump system is within the threshold range of time from when the user entered data into the pump system.

19. A method of administering medicinal fluid to a user, comprising

delivering a medicinal fluid from a wearable pump system to the user;

detecting an activity level of the user using an activity sensor in the pump system;

storing data correlating activity levels of the user to changes in the need for medicinal fluid of the user, the data being stored in computer-readable memory of the pump system; and

adjusting the delivery of medicinal fluid from the pump system to the user in response to an activity level of the user and the stored data correlating activity levels to changes in the need for medicinal fluid.

20. The method of claim 19, wherein the stored data comprises an activity level to glucose ratio.

21. The method of claim 19, further comprising querying the user on a user interface of the pump system to indicate whether the detected activity level of the user represents an actual activity level of the user.

22. The method of claim 19, wherein the method further comprises detecting a blood glucose level.

23. The method of claim 19, wherein the method further comprises indicating to the user that exercise could be dangerous.

24. The method of claim 19, wherein the method further comprises requesting the user perform a blood test and to input that data.

25. A portable and wearable insulin pump system, comprising:

a disposable and non-reusable pump device having a drive system to dispense insulin, the pump device defining a space to receive an insulin cartridge;

a reusable controller device removably attached to the pump device, the controller device having control circuitry that communicates control signals to the drive system to dispense insulin at a dispensation rate when the controller device removably attached to the pump device, the controller device including a user interface; and

an activity sensor arranged in the reusable controller and electrically connected to the control circuitry, the activity sensor providing signals indicative of activity levels of the user;

wherein the controller device queries the user to indicate whether a detected activity level of the user represents an actual change in the activity level of the user and the controller device alters the medicine dispensing schedule based on the user-indicated activity level.