Pen needle assembly outer cover having a breakaway flange

摘要

An outer needle cover for a pen needle assembly is provided with a breakaway flange. Prior to use, the flange is connected to a body of the outer cover. The flange has a reduced cross sectional thickness portion that facilitates separation of the flange from the outer cover, thereby reducing the outer diameter of the outer cover. The reduced outer diameter of the outer cover allows the outer cover to be received by a pen cap of an existing injector device.

主权项

1. A needle cover for an injection apparatus, comprising: a cap having an open end with an inner dimension for coupling to the injection apparatus; a needle cover having an open first end and a closed second end and having an outer diameter to be received in said open end of said cap; a projection connected to said second end of said cover; a needle received in said cover and said projection; and a breakaway removable flange unitarily formed with said open first end of said cover, a continuous breakable portion between said flange and said cover and surrounding said open first end of said cover, said flange having an outer diameter greater than a diameter of said open end of said needle cover to prevent said open first end of said needle cover from being received in said open end of said cap; a label attached to a bottom face of said flange forming a seal closing said first open end of said cover; wherein when said breakaway flange is attached to said cover, access to an interior of said cover by the injection apparatus is prevented, and when said breakaway flange is removed from said cover to reduce an outer diameter of said cover and to provide an opening to allow access to said interior of said cover by the injection apparatus, said cover and said projection are receivable by said cap of the injection apparatus, said breakaway flange preventing said cover from being received in said open end of the cap prior to removal of said flange.