Drug delivery device with needle hub

A drug delivery device comprising:

• a housing;
• a fluid reservoir received within the housing;
• a drive assembly configured to dispense fluid from the fluid reservoir;
• a needle hub actuator attached to the housing;
• and
• a needle hub at least partially received by the housing, the needle hub comprising:
• a hub body comprising a patient contact surface and a housing connection attaching the hub body to the housing;
• a needle holder with a needle attached to the needle holder;
• and
• a cannula holder with a cannula attached to the cannula holder,
• wherein the needle hub actuator is moveable relative to the housing from a first position to a second position spaced from the first position, the second position of the needle hub actuator is closer to the patient contact surface of the hub body than the first position of the needle hub actuator, the needle hub actuator configured to move the needle holder and the cannula holder from a retracted position where the needle and the cannula are positioned within the hub body to an insertion position where distal ends of the needle and the cannula are positioned outside of the hub body, and wherein the needle hub is detachable from the housing, wherein the housing connection of the hub body is received within an opening defined by the housing, wherein the housing connection comprises a retaining member configured to engage the housing to secure the hub body to the housing, and wherein the housing connection comprises a release member, the release member of the housing connection engaging the needle hub actuator to release the hub body from the housing when the needle hub actuator moves from the second position to the first position.