The invention relates to a needle casing safety device for covering on a syringe needle, the needle sleeve safety device comprises an inner sleeve of the sleeve and an outer sleeve. The casing includes one side wall connected by a pipe and a pipe body, and the body is provided with a slotted tube. The outer sleeve is slidably sheathed over the periphery of the inner sleeve. When the outer tube is pulled outwards, the inner sleeve is provided for an open slot, syringe needle under the cross of the pipeline, to avoid the needle straight to the dangerous stab your hand; when the outer tube inward condensation, slotted is covered, can be covered on the double tube device by needle the inner and outer tube. The inner, avoid residual liquid needle head by the slit flow.
【技术实现步骤摘要】
【技术保护点】
１．一种针头安全双套管装置，其特征在于其是用于套覆于一针筒的针头，该针头安全双套管装置包括：一内套管，包含有一管座与一管体，该管座的内壁具有多个内突体；该管体沿其长度方向具有相对的一第一端与一第二端，该第一端邻向该管座，且该管体沿其圆周方向具有相对的一第一侧壁与一第二侧壁，该管体的第一侧壁以一连结部与该管座相连结，该管体的第二侧壁则自该第一端开始设有一沿着该管体长度方向延伸的一开缝；以及一外套管，具有相对的一开口端与一封口端，该外套管套覆于该内套管的外周，并沿着该内套管的长度方向滑动，以遮覆或敞开该内套管的开缝。
【技术特征摘要】
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