To provide an assembly body which can decide a position of an embolic coil easily and securely with approaching to a fixed part of a vital tube which is small and separated moree easily. 小さくかつ離れた生体管の所定の部位に、より容易に接近して塞栓コイルを容易かつ確実に位置決めできる組立体を提供する。 - 特許庁