Activity sensing techniques for an infusion pump system
View Patent ↗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.
1. A wearable infusion pump system, comprising:
a pump drive system configured to dispense insulin to a user from a reservoir in a pump housing;
means for controlling the pump drive system to dispense the insulin from the reservoir according to a predetermined dosage schedule;
means for detecting an activity level of the user, the means for detecting the activity level being in communication with means for controlling and being housed together with the means for controlling;
means for querying the user to confirm whether the detected activity level of the user represents an actual activity level of the user; and
wherein the means for controlling alters the dispensation of insulin from the reservoir as a result of the user confirming via the means for querying that the detected activity level represents the actual activity level of the user.
2. The system of claim 1 , wherein the means for querying is configured to prompt the user for user input to authorize a decrease in the dispensation of insulin that is determined in response to said detected activity level.
3. The system of claim 2 , wherein the means for controlling alters the dispensation of insulin by changing a scheduled dosage of the insulin in response to the user input that authorizes said decrease in the delivery of insulin.
4. The system of claim 1 , wherein the means for detecting the activity level of the user comprises an activity sensor including at least an accelerometer.
5. The system of claim 4 , wherein the activity sensor comprises at least said accelerometer mounted within a controller housing of the wearable infusion pump system, the controller housing being different from a pump housing that houses the insulin reservoir and the pump drive system.
6. The system of claim 5 , wherein the means for controlling is housed within the controller housing, and the means for querying is mounted to the controller housing, wherein the pump drive system housed in the pump housing receives the control signals from the means for controlling housed in the controller housing via a first electrical connector on the pump housing that mates with a second electrical connector on the controller housing when the controller housing and the pump housing are removably attached in a fixed relationship.
7. The system of claim 4 , wherein the means for detecting the activity level is configured to determine if a detected motion of the wearable infusion pump system is within a threshold range of time from when the user entered data into the wearable infusion pump system, wherein the motion of the pump system is ignored if the motion of the portable infusion pump system is within the threshold range of time from when the user entered data into the portable infusion pump system.
8. The system of claim 1 , wherein the means for detecting the activity level is configured to determine whether the detected activity level represents an exercise activity.
9. The system of claim 8 , wherein the means for querying outputs an alert to indicate to the user that the exercise activity is potentially unsafe.
10. The system of claim 1 , wherein the means for querying also prompts the user to input blood glucose data after detecting the activity level of the user using the activity sensor.
11. The system of claim 1 , wherein the means for controlling comprises control circuitry configured to activate the pump drive system to dispense the insulin to the user based on the predetermined dosage schedule.
12. The system of claim 1 , wherein the means for querying comprises a user interface display in communication with the means for controlling.
13. The system of claim 1 , wherein the means for controlling alters the dispensation of insulin in response to the user input via the means for querying that confirms the detected activity level represents the actual activity level of the user and additional user input via the means for querying that authorizes a decrease in the delivery of insulin.
14. The system of claim 1 , wherein the means for detecting the activity level is configured to detect an increased motion level of the user above a threshold motion level, the increased motion level being indicative of a detected seizure.
15. The system of claim 1 , further comprising a body-worn glucose sensor device in wireless communication with the means for controlling.