Patent ID: 7811254

Claim:
An autoinjector assembly comprising: an outer tube having a distal end and a proximal end, and having an abutment surface defined on the outer tube; a cartridge assembly having a distal end and a proximal end, moveably situated within the outer tube; a needle attached to the proximal end of the cartridge assembly; a punctureable sheath covering the needle with the sheath being nonremovable and maintained within the autoinjector assembly; an activateable power providing assembly for providing force to move the cartridge assembly to cause the needle to extend out of the proximal end of the outer tube; and a needle depth adapter connected to the proximal end of the cartridge assembly for limiting the extension of the needle out of the proximal end of the outer tube by abutting the abutment surface of the outer tube and thereby providing a depth of injection of from about 0.15 inches to about 0.30 inches; and the needle depth adapter having a constant longitudinal length where the longitudinal length is about the same both prior to and after abutting the abutment surface.