The present invention closes a kind of safety device of what (40),It include: needle housing (41),The needle housing limits to form longitudinally extending channels,The longitudinally extending channels are equipped with the opening (60) of lengthwise； At least one spring clip (50),It is mounted in the longitudinally extending channels by the opening (60) of lengthwise； And stop device,Stop the augmenting portion (38) for introducing needle (31) with what,Wherein the longitudinally extending channels can allow introducing needle (31) to extend longitudinally through needle housing (41),At least one described spring clip (50) is provided with the first clamping portion (55) and is engaged with what with catheter block (24),At least part of shape of at least one spring clip (50), which is formed into, to be compressed before being introduced into needle and extracting out from conduit tube component (20) by the introducing needle,And in the introducing needle from the Hou of conduit tube component (20) extraction,At least part, which is released, bounces and captures the sharp distal needle point (32) for introducing needle.本發明關於一種安全裝置(40)，包括：針罩(41)，該針罩限定形成縱向延伸通道，該縱向延伸通道設有縱長的開口(60)；至少一個彈簧夾(50)，其通過縱長的開口(60)安裝在所述縱向延伸通道中；以及止擋裝置，用於阻擋引入針(31)的增大部分(38)，其中所述縱向延伸通道能容許引入針(31)縱向延伸穿過針罩(41)，所述至少一個彈簧夾(50)設置有第一卡接部(55)用於與導管座(24)嚙合，所述至少一個彈簧夾(50)的至少一部分的形狀被製成為在引入針從導管組件(20)中抽出之前被該引入針壓縮，而在該引入針從導管組件(20)抽出之後，該所述至少一部分被釋放彈起並捕獲所述引入針的尖銳遠端針尖(32)。
