Guide thread leading-in device for aiding catheter to implant into human body

The utility model in particular relates to a guidewire transmitter which assists to plant a canal into a human body. The transmitter includes an injector and an auxiliary pin case. The injector is movably arranged on the side wall of the auxiliary pin case and the top part of the auxiliary pin case is provided with a strip cut along the length direction of the auxiliary pin case. One end of the auxiliary pin case is sleeved with a slide head and the other end is provided with an expansion head. The slide head is connected with a puncture pin and the puncture pin passes through the auxiliary pin case and transverses out from the inner hole of the expansion head. The upper part of the slide head is provided with a transmitting opening which is provided with a one way valve. A channel is formed between the transmitting opening and the puncture pin in the body of the slide head. The channel is communicated with the inner hole of the puncture pin. After adopting the technical scheme, as the puncture pin and the expansion head are arranged on the auxiliary pin case together, the puncture pin utilizes the expansion head to realize expansion under the situation of no need to pull out after puncturing into the human body when in use, thus having high puncture efficiency and reducing the operation steps.