The present invention discloses a separation type safety needle guard device. An opening is formed in one side of a needle guard body of the device along a longitudinal axis, wherein the width of the opening is getting reduced from the near end of the needle guard body to a transition part of the needle guard body, the side walls of the near end of the needle guard body respectively extend to form first extension sections, and the ends of the first extension sections that are disposed at two sides protrude towards an accommodating space so as to form fixing parts. A needle head fixing assembly is connected to the side walls of the needle guard body and is disposed in the accommodating space. A fixing plate in which through holes are defined is connected to the bottom of the needle guard body by a second extension section, and is moveable relative to the needle guard body. The junction of the second extension section and the fixing plate corresponds to positions of the first extension sections where the fixing parts are disposed, so that the bottom of the fixing plate can be buckled by the fixing parts when the fixing plate enters a space defined in between the first extension sections.本發明係一種分離式安全針套裝置。前述裝置之針套本體沿縱向軸線於一側形成開口,開口寬度由針套本體近端減縮至針套本體之轉折部,針套本體於近端之邊牆更分別延伸形成第一延伸段,位於二側的第一延伸段之端部往容置空間方向凸起形成固定部。其針頭固定元件係連接於針套本體之邊牆且位於容置空間內。設有貫孔的固定板經由第二延伸段連接至針套本體之本體底面,並可相對於針套本體活動。而第二延伸段與固定板之連接處係對應固定部於第一延伸段之位置,以使固定板於進入第一延伸段之間的空間中時,得以讓固定部扣住固定板之底部。AX‧‧‧縱向軸線OW1‧‧‧第一開口寬度OW2‧‧‧第二開口寬度PW‧‧‧平板寬度PL‧‧‧平板長度H‧‧‧邊牆高度1‧‧‧分離式安全針套裝置10‧‧‧針套本體101‧‧‧近端102‧‧‧轉折部103‧‧‧遠端11‧‧‧第一延伸段111‧‧‧固定部12‧‧‧固定板120‧‧‧貫孔121‧‧‧第二延伸段131‧‧‧第一固定元件132‧‧‧第二固定元件
