System and method for incorporating exercise into closed-loop diabetes therapy

A system for closed loop diabetes therapy as described herein.

• a pump mechanism configured to facilitate delivery of insulin to a user;
• a user interface;
• a communications device adapted to receive glucose levels from a continuous glucose monitor;
• a processor functionally linked to the pump mechanism, the user interface and the communications device, the processor configured to:
• calculate and deliver insulin doses to the user based on a closed loop insulin delivery algorithm, the closed loop insulin delivery algorithm including an outer glucose loop that compares glucose levels from the continuous glucose monitor to a glucose target to determine an insulin on board target for the user and an inner insulin on board loop that compares an estimated insulin on board for the user to the insulin on board target to determine an insulin on board error used to calculate insulin doses configured to maintain the insulin on board of the user at the insulin on board target and the glucose levels of the user at the glucose level target;
• receive an indication that the user will be exercising;
• activate an exercise mode for the closed loop insulin delivery algorithm in response to the indication that the user will be exercising, the exercise mode modifying the inner insulin on board loop of the closed loop delivery algorithm that calculates insulin doses to maintain the insulin on board of the user at the insulin on board target;
• and
• calculate and deliver insulin doses to the user based on glucose levels from the continuous glucose monitor according to the exercise mode of the closed loop insulin delivery algorithm following the indication that the user will be exercising.