Sealed implant injector

The utility model relates to the technical field of medical equipment, in particular to a sealed implant injector which comprises a needle cylinder, one end of the needle cylinder is connected with a needle head, and a push rod moving in the direction of the needle head is embedded in the needle head. The scissor-fork connecting rod group is arranged in the needle cylinder, and the end part of the push rod is matched with a crossed shaft at the close end of the scissor-fork connecting rod group through a first shaft sleeve; the triggering device is arranged in the needle cylinder and connected with the end, away from the needle head, of the shear fork connecting rod set, and an operation part of the triggering device penetrates through the outer wall of the needle cylinder and extends outwards. Displacement amplification is achieved through small-range displacement action of the operating component and geometric motion of the scissor connecting rod group, so that the problem of unstable injection caused by la