When keeping the liquid denseness can be achieved and at the same time after the injecting the needle the pre- filled syringe which has receipt possible structure inside the injection tube is offered.In the point the injection tube 1 where the possessing and the basic edge open terminal area 11 densely unrestrictedly inside 4 and the aforementioned injection tube 1 and the aforementioned terminal area 11 it can seal the gasket with the plunger 3 which connects to the basic edge of 2 which and installation and removal unrestricted cover component the liquid sliding can provide and the aforementioned gasket 2 it includes, being the pre- filled syringe A where the medicine fills up inside the aforementioned injection tube 1, as for the aforementioned gasket 2 as it can provide coupling means 21 in the point, the aforementioned coupling means with the basic end of 21 and the aforementioned gasket 2 medicine 15 inside the aforementioned injection tube 1The pre- filled syringe A which features that it can provide the partition section 23 which can be isolated from outside.保管時に液密を達成でき且つ注射後に針を注射筒内に収納可能な構造を持つプレフィルドシリンジを提供すること。先端に接続部11を有しかつ基端が開口した注射筒1と、前記接続部11を封止できかつ着脱自在な蓋部材4と、前記注射筒1内に液密に摺動自在に設けられたガスケット2と、前記ガスケット2の基端に連結するプランジャー3とを含む、前記注射筒1内に薬剤が充填されたプレフィルドシリンジAであって、前記ガスケット2は先端部に結合手段21が設けられるとともに、前記結合手段21と前記ガスケット2の基端部との間に前記注射筒1内部の薬剤15を外部から隔離できる隔壁部23が設けられたことを特徴とするプレフィルドシリンジA。
