The needle (16) the syringe which in general possesses the cylindrical it prepares for the front end substance (10) the needle sealed device has, in order the needle (16) to protect, the sealed section which is formed (20) with, the syringe engagement section which is engaged in the substance of the syringe (22) with, the break possible connected section which connects the sealed section and the syringe engagement section (24) with.針(16)を前端に備える概ね円筒状の本体を有するシリンジ(10)の針シールド装置は、針(16)を保護するように構成されるシールド部(20)と、シリンジの本体に係合するシリンジ係合部(22)と、シールド部及びシリンジ係合部を連結する破断可能な連結部(24)と、を有する。