Radio frequency ablation needle with saline injection function

The utility model discloses a radiofrequency ablation needle with a saline injection function, which relates to the technical field of medical instruments and comprises a needle tube component, an electrode component and an injection component are arranged in the needle tube component, the injection component comprises a transfusion main tube and an injector, and a liquid inlet end of the transfusion main tube is connected with a tube joint. A one-way valve is connected to the middle of the infusion main pipe in series, the liquid outlet end of the injector is located in the liquid inlet end of the pipe connector, the output end of the injector containing normal saline is installed in the pipe connector, the front end of the injector is located in the groove, and medical staff pierces the puncture pipe into the human body. The injector is pushed to inject normal saline into the human body through the liquid outlet branch pipes, if the injection amount of the normal saline does not reach the standard, the inje