Disposable intravenous infusion needle

In this application disposable intravenous infusion needle, including needle handle (1), pipe (2), needle file (3), needle tubing (4), protective sheath (5), peg graft on needle handle (1) end needle tubing (4), be equipped with on needle handle (1) afterbody pipe (2), pipe (2) are connected between needle handle (1) and needle file (3), protective sheath (5) along the outside of needle tubing (4) encircle and the joint on needle handle (1), be equipped with seal (11) on needle handle (1), seal (11) have arch (111) along needle handle (1) end protrusion, the end joint of protective sheath (5) is on protruding (111), at least, have simple structure, protection nature is strong, connect closely, the high effect of stability. 本申请中所述的次性使用静脉输液针，包括针柄（1）、导管（2）、针座（3）、针管（4）、保护套（5）；所述针管（4）插接在针柄（1）端头上，针柄（1）尾部上设有导管（2），导管（2）连接在针柄（1）与针座（3）之间，保护套（5）沿着针管（4）的外部进行环绕并卡接在针柄（1）上，针柄（1）上设有密封体（11），密封体（11）沿着针柄（1）端头凸出有凸起（111），保护套（5）的端头卡接在凸起（111）上；至少具有结构简单、防护性强，连接紧密、稳定性高的效果。