Abstract: A reuse prevention safety catheter is proposed. The reuse prevention safety catheter includes: a catheter hub having an external needle disposed therein; a cannula plug having an internal needle inserted and penetrated into the catheter hub disposed therein to introduce the external needle into a blood vessel and be separated from the catheter hub; and a locking guide unit having a through-hole configured to allow the internal needle to pass through, wherein the through-hole is deformed when the penetrated internal needle is withdrawn, such that re-penetration of the internal needle is blocked.

Abstract: Provided is a catheter, which can protect a medical personnel and a patient from a needle stick injury when it is disposed of after use. In an example embodiment, the catheter includes a needle, a plug having a front end coupled to the needle, a first case formed to enclose the needle, a socket coupled to a front end of the first case, a gear vertically coupling the first case and the socket to each other and having a tooth formed on an outer periphery of one side and a needle groove formed therein to allow the needle to pass therethrough, a catheter hub fastened by the tooth of the gear, and a tube coupled to the front end of the catheter hub.