The medicine injection device (1) manner of the assembly includes the process which is shown below. The needle tube (3) and the needle hub (4) the process which locks as one unit with high frequency welding. The process which does the treatment with radiation sterilization the needle tube (3) and vis-a-vis the needle hub (4). The process which does the sterilization treatment which heat occurs the medicine (M) the enclosing container restoration vis-a-vis (2). The needle hub which passes the process due to radiation sterilization (4) the isolator device (H) the process which is conveyed inside sterile. The isolator device (H) in inside, the needle hub (4) and the enclosing container (2) the process which locks under sterile environment. The needle hub the enclosing container where (4) is locked in (2) under sterile environment the medicine (M) the process restoration.薬剤注射装置(1)の組み立て方法は、以下に示す工程を含む。針管(3)及び針ハブ(4)を高周波溶着によって一体に固定する工程。針管(3)及び針ハブ(4)に対して放射線滅菌による処理を行う工程。薬剤(M)が充填される収納容器(2)に対して熱が生じる滅菌処理を行う工程。放射線滅菌による工程を経た針ハブ(4)をアイソレータ装置(H)内に無菌的に搬送する工程。アイソレータ装置(H)内で、針ハブ(4)と収納容器(2)とを無菌環境下で、固定する工程。針ハブ(4)が固定された収納容器(2)に無菌環境下で薬剤(M)を充填する工程。
