Automated filling device for wearable infusion pump with air removal and detection capabilities

A medication filling system comprising:

• a medication delivery device comprising a communication circuit operable to receive a wireless signal;
• and
• a medication filling device comprising:
• a housing configured to attach to the medication delivery device,
• a vial attachment component comprising:
• a housing configured to hold a medication vial therein,
• a pump,
• an empty vial detection unit comprising a light source and a light sensor respectively positioned such that light transmitted from the light source and transmitted through an empty vial is not incident on the light sensor and light transmitted from the light source and transmitted through a vial containing liquid medication is incident on the light sensor, and
• a processor configured to receive a signal from the empty vial detection unit indicating whether a vial attached to the vial attachment component is empty;
• a user interface output configure to output an indication to a user indicating whether the vial is empty;
• and
• a communication circuit operable to transmit a wireless signal.