Patent ID: 7654986

Claim:
A needle mounting system for mounting and dismounting a needle assembly onto a needle mount of an injection device, comprising: a needle assembly comprised of: a hub that is attached to a needle, the hub having an interior wall, wherein the interior wall of the hub is cylindrical and comprises a plurality of protrusions extending radially inward from the interior cylindrical wall of the hub, a needle mount comprised of two separate coupling mechanisms comprising a first coupling mechanism and a second coupling mechanism, the needle mount comprising: a cylindrical outer wall having a top end and threads disposed on the cylindrical outer wall, the first coupling mechanism comprising a plurality of grooves disposed in the cylindrical outer wall beginning at the top end of the cylindrical outer wall and defining a passageway that is generally parallel to a cylindrical axis of the cylindrical outer wall, and wherein at least one groove of the needle mount comprises a first portion and a second portion oriented at an angle to the first portion, wherein the first portion and second portion do not form a part of the second coupling mechanism and wherein the protrusions of the needle hub interact with the grooves to form a bayonet coupling, and the second coupling mechanism comprising threads disposed on the cylindrical outer wall are suitable for threadedly connecting and matingly fitting a conventional threaded needle assembly to the needle mount, thereby allowing either a threaded needle hub to be mounted or dismounted onto the needle mount via the second coupling mechanism, or a bayonet needle hub to be mounted or dismounted onto the needle mount via the first coupling mechanism.