To provide a catheter assembly body having a double pipe structure capable of performing sterilization treatment on an inter-pipe space and its stored article.SOLUTION: A catheter hub 11 and a catheter 10 are provided, wherein the catheter hub 11 has a continuous hole 63, the catheter 10 has a second inner tubular member 21 constituting an OTW lumen 16 within a second outer tubular member 23 that forms an outline, an inter-tube space 50 exists between the second inner tubular member 21 and the second outer tubular member 23, the continuous hole 63 of the catheter hub 11 communicates with the second inner tubular member 21, the base end part of the second outer tubular member 23 is blocked, a gas passage hole 80 is opened in the catheter hub 11, and the inter-tube space 50 communicates with the outside via the gas passage hole 80.SELECTED DRAWING: Figure 10【課題】本発明は、二重管構造をもつカテーテルの組み立て体及びその収納物であって、管間空間に対して滅菌処理を施すことが可能なカテーテルの組み立て体及びその収納物を提供することを課題とする。【解決手段】カテーテルハブ１１と、カテーテル１０を有し、カテーテルハブ１１は連通孔６３を有し、カテーテル１０は外郭を構成する第２外側管状部材２３内にＯＴＷルーメン１６を構成する第２内側管状部材２１があり、第２内側管状部材２１と第２外側管状部材２３の間に管間空間５０が存在し、カテーテルハブ１１の連通孔６３は第２内側管状部材２１と連通し、第２外側管状部材２３の基端部が閉塞されており、カテーテルハブ１１にガス通過孔８０があって、ガス通過孔８０によって管間空間５０が外部と連通している構成とする。【選択図】図１０
