PELLET INJECTOR

The utility model discloses a pellet injector, comprising a radioactivity injection container with alterable volume which contains a seal transmission pair, a hydraulic transmission connected with the transmission pair, a closed shielding housing containing the radioactivity injection, an injection needle connected with the radioactivity injection container, a pipeline and an operation component, which can complete the pellet injection with the traditional operation technique. The utility model has the advantages of compact structure, easy fabrication and perfect protective effect, and starts a successful precedent of the cold operation of the pellet injection in the radioactivity medicine. After using, the residue of the radioactive substances can not be processed with the cleansing solution to discharge; the pellet injector can be moved conveniently, and can be carried with.