The invention relates to the field of medical devices, and in particular to a long nozzle for a double-mixed syringe and a double-mixed syringe. On the one hand, the outlet joint of the connecting piece for the double mixing syringe forms an outlet step structure, and the long nozzle entrance part of the long nozzle for the double mixing syringe forms an inlet step structure corresponding to the outlet step structure, so that the long nozzle of the long nozzle The inlet part can be assembled in a sealed manner with the connector outlet joint of the connector and receive the liquid from the connector, so that the connector is adapted to connect with the long spray head； on the other hand, the connector for the double mixed syringe It can also be adapted to short spray heads. In this way, the connector for the double-hybrid syringe of the present invention can be used in both the spraying type and the cavity mirror type of use modes, and the connector and the long nozzle can be accurately butted in a simple manner.本發明涉及醫療器械領域，具體地涉及雙聯混合注射器用長噴頭及雙聯混合注射器。一方面，雙聯混合注射器用連接件的連接件出口接頭形成出口臺階結構，雙聯混合注射器用長噴頭的長噴頭入口部形成與該出口臺階結構對應的入口臺階結構，使得長噴頭的長噴頭入口部能夠與連接件的連接件出口接頭以密封的方式組裝並接收來自所述連接件的液體，從而使得連接件與長噴頭進行適配連接；另一方面，該雙聯混合注射器用連接件還能夠與短噴頭進行適配連接。這樣，本發明的雙聯混合注射器用連接件能夠兼用於噴塗型和腔鏡型兩種使用模式，還能夠使連接件和長噴頭以簡單的方式實現準確對接。
