Drug delivery device

A wearable drug delivery device comprising:

• a housing having an opening;
• an adhesive disposed on a surface of the housing for attaching the housing to skin of a patient;
• a reservoir disposed in the housing and adapted to contain a drug;
• a plunger disposed in the reservoir;
• a first needle;
• a fluid conduit;
• a hub distinct from the reservoir and surrounding at least a portion of the first needle, wherein the hub is coupled to the fluid conduit;
• a delivery member having a wall that defines a passage between a first end and a second end of the delivery member, the first end of the delivery member being initially retracted within the housing and subsequently deployed through the opening in the housing for introduction into the skin of the patient, the second end of the delivery member configured to be operably connected in fluid communication with the reservoir via at least the first needle and the fluid conduit;
• a septum, wherein the first needle is configured to pierce the septum to facilitate fluid communication between the reservoir and the delivery member;
• wherein the first end of the delivery member is configured to move through the opening in the housing for introduction into the skin of the patient;
• and
• wherein the drug delivery device is free of an introducer needle for introducing the delivery member into the patient.

A wearable drug delivery device comprising:

• a housing having an opening;
• an adhesive disposed on a surface of the housing for attaching the housing to skin of a patient;
• a blunt cannula moveable relative to the housing and having a wall that defines a passage between a first end and a second end of the blunt cannula, the wall having at least a first tapered region at the first end to define an opening in fluid communication with the passage, and at least one side port formed in the wall to resist interruption of fluid flow through the passage and out of the first end of the blunt cannula;
• a reservoir disposed in the housing and configured to be in fluid communication with the second end of the blunt cannula at least during drug delivery;
• a plunger disposed in the reservoir;
• a needle, wherein the second end of the blunt cannula is configured to be operably connected in fluid communication with the reservoir via the needle to deliver the drug to a patient;
• a hub surrounding at least a portion of the needle, wherein the hub is disposed at the second end of the blunt cannula;
• and
• wherein the blunt cannula is initially retracted within the housing and subsequently deployed in a linear direction through the opening in the housing for insertion into the patient, and wherein the needle is free from contact with the patient during insertion of the blunt cannula into the patient.