Anti-puncture needle tip locking device and disposable administration needle

The utility model relates to the technical field of disposable administration needle manufacturing, in particular to a puncture-proof needle tip locking device and a disposable administration needle, which are reasonable in structure, simple and convenient to operate, high in safety and capable of effectively locking and protecting a needle tip after the needle tip is withdrawn, and is characterized in that the puncture-proof needle tip locking device is further provided with a limiting sleeve; compared with the prior art, the puncture needle has the advantages that the success rate and the stability of puncture and needle point locking can be remarkably improved, and the puncture needle has the remarkable advantages of being reasonable in structure, easy and convenient to assemble, safe, reliable and the like. 本实用新型涉及一次性给药针制造技术领域，具体的说是一种结构合理、操作简便、安全性高的能够在针尖退出后对针尖进行有效的闭锁保护的防扎伤的针尖闭锁装置及一次性给药针，其特征在于，还设有限位套，限位套嵌合在套管座后端口处，限位套具有筒状主体，限位套的上端开设用于与针尖锁定部件相嵌合的槽口，与现有技术相比，能够显著提高穿刺以及针尖锁定的成功率和稳定性，具有结构合理、装配简便、安全可靠等显著的优点。