Autonomous dose injection

A dose injection device, comprising:

• a chamber configured to receive a cartridge;
• a drive mechanism configured to apply force to a plunger of a received cartridge, wherein the plunger is arranged to move within the received cartridge responsive to force applied by the drive mechanism and thereby push fluid in the received cartridge toward an interface for dispensing fluid;
• a sensor configured to generate a location signal indicative of a plunger location;
• a logic circuit configured to calculate a target amount of insulin to deliver to a user;
• and
• a drive controller configured to generate control signals for the drive mechanism, wherein the control signals correspond to the target amount of insulin calculated by the logic circuit.

A drug therapy management system, comprising:

• a analyte sensor;
• a therapy application;
• a dose injection device configured to:
• calculate a target amount of insulin to deliver to a user's body at least partially responsive to therapy parameters received from the therapy application and blood analyte values received from the analyte sensor;
• provide a dose ready notification associated with the calculated target amount of insulin;
• and
• deliver a dose of insulin that corresponds to the calculated target amount of insulin at least partially responsive to receipt of a dosing confirmation.

A method, comprising:

• calculating a target amount of insulin to deliver to a user;
• providing a dose ready notification associated with the calculated target amount of insulin;
• receiving a dosing confirmation in response to the dose ready notification;
• and
• requesting delivery of the target amount of insulin at least partially responsive to receiving the dosing confirmation.