Patent ID: 7303543

Claim:
An infusion set for subcutaneous administration of a fluid, comprising: a cannula housing including a projection, a passageway formed through the projection, a first convex-shaped guide rail formed on a first external surface of the projection; a second convex-shaped guide rail formed on a second external surface of the projection, and a cannula adapted to be placed into the skin of a patient and in fluid communication with the passageway in the projection; and a connector adapted to be connected to the cannula housing, the connector including a first guide arm having a first concave portion adapted to slide over the first convex-shaped guide rail, a second guide arm having a second concave portion adapted to slide over the second convex-shaped guide rail, and a first locking arm, wherein the first locking arm includes a first barb, and wherein the cannula housing further includes a first recess adapted to receive the first barb.