A fluid delivery device having an insertable prefilled cartridge

A fluid delivery device (110) comprises a housing (112) having a bottom surface configured to be coupled to the skin surface. The fluid delivery device includes a cartridge (222) prefilled with a fluid and configured to be inserted into the housing. The cartridge has a septum configured to be generally perpendicular to the bottom surface when the cartridge is inserted in the housing. The fluid delivery device includes a needle assembly that has a needle that includes a fluid coupling end and a delivery end. The fluid coupling end of the needle is fluidly disengaged from the cartridge in an initial position. The delivery end of the needle extends past the plane of the bottom surface and the fluid coupling end of the needle extends through the septum in a deployed position. Fig 9A 412 452a 410 450a 450 480b 428b )40 412b 412a 480a 430b 412a 412b