The tank which is sealed up the package the partition which is overturned (18) by on main internal of the injector itself and the injector and, the medical application injector which is contained (10) the pen needle assembly item which it has (12) is offered in this bill. The pen needle assembly item includes, the needle which is locked to the hub and the hub and. As for the hub, in order to be installed on nested system in the distal (2036) edge of the injector itself the guide key (24) the track/truck which is accommodated (26) of making use, it is formed. When installing the pen needle assembly item on the injector itself, the 1st part of the track/truck receives the guide key, in order to guide the guide key to the straight line and over sufficient distance, being constituted, the proximal edge of the needle, without accompanying the revolution of the needle, passing by the partition, it makes that it pierces completely possible. As for the 2nd part of the track/truck, in order to make that the pen needle assembly item is turned when you can locate the proximity of the partition the proximal edge of the needle possible, it is constituted.注射器本体と、注射器本体内に包覆される隔壁(18)によって密封される貯槽と、を含有する医療用注射器(10)を備えるペン針組立品(12)が本明細書中に提供される。ペン針組立品は、ハブと、ハブに固定される針と、を含む。ハブは、ガイドキー(24)を収容するトラック(26)を用いて注射器本体の遠位端に入れ子式に据え付けられるように形成される。ペン針組立品を注射器本体に据え付けるとき、トラックの第1部分は、ガイドキーを受容し、および十分な距離にわたって一直線にガイドキーをガイドするように構成されて、針の近位端が、針の回転を伴わずに、隔壁を通って完全に刺し通すのを可能にする。トラックの第2部分は、針の近位端が隔壁の近位に位置付けられた状態でペン針組立品が回されるのを可能にするように構成される。
