| CPC A61M 5/3204 (2013.01) [A61M 5/3202 (2013.01); A61M 5/3286 (2013.01); A61M 5/347 (2013.01); A61M 5/2466 (2013.01); A61M 2005/2474 (2013.01)] | 20 Claims |

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1. An injection needle assembly comprising:
a needle cover comprising:
an open distal end having an inner diameter;
a threaded inner circumferential surface; and
an axially extending ledge terminating in an inwardly directed ledge, a needle holder comprising:
an injection needle having proximal and distal pointed ends;
a first engagement device comprising a cut-out located on a first outer surface; and
a second engagement device that is separate from the first engagement device and located on a second outer surface that is distal to the first outer surface, and
a tubular cap comprising:
an outer circumferential surface comprising screw threads that are engaged with the threaded inner circumferential surface;
a distal part having a container attachment device configured to attach to a container holder of a drug delivery device; and
a central passage having a diameter larger than the second outer surface of the needle holder,
wherein the inner diameter of the open distal end of the needle cover is configured to completely enclose the needle holder and the tubular cap such that the container attachment device of the tubular cap is also surrounded by the needle cover.
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