Abstract: In one aspect, a drug delivery device is provided herein including: a monolithic body having a plurality of fluid ducts and at least one outlet duct formed therein; a plurality of drug cartridges attached to the body, the drug cartridges each including a reservoir for accommodating at least one drug wherein, the plurality of fluid ducts is arranged to convey the drugs from the drug cartridges to the at least one outlet duct; and, a needle support spaced from the body, the needle support including a needle configured for insertion into a patient for drug delivery, the needle support including adhesive for releasable securement to a patient, wherein, the needle support is connected to the body by a flexible tether through which passes at least one fluid passageway formed to convey drug from the at least one outlet duct to the needle.

Abstract: In one aspect, a method is provided herein of preparing a drug delivery device, the drug delivery device having a body with at least one fluid duct being open along a first face of the body, the at least one fluid duct for conveying drug from at least one reservoir to a needle configured for injection into a patient, the method including: providing a barrier across the first face of the body to at least cover the at least one fluid duct, wherein the barrier is ultraviolet transmissive; and, exposing the first face of the body to ultraviolet radiation so as to allow the ultraviolet radiation to pass through the barrier and decontaminate the at least one fluid duct.