A kind of Combined injector,It includes a safe needle sleeve group,Shot sleeve group and injection putter group,Safe needle sleeve group connects flask for medicinal preparations to group,Shot sleeve group is arranged on the outside of what flask for medicinal preparations,And removable group of group connects safe needle sleeve group,Its push rod of injection putter group protrudes into shot sleeve group and flask for medicinal preparations,The component that flask for medicinal preparations piston is pushed when injection is provided,Wherein by shot sleeve group to be that removable group of rotation combination is taken to construct between its abutment sleeve and the medicine bottle upper shield of pinhead sleeve,Except can provide flask for medicinal preparations changes function,And the members such as shot sleeve group and injection putter group can reach outside reuse,It is constructed by removable group of the rotation combination,Make to have in the operating process of Combined injector what dismounting flask for medicinal preparations and good tears a group simplicity open.一種組合式注射器，其包含一安全針頭套組、注射套筒組與注射推桿組，安全針頭套組用以組接藥劑瓶，注射套筒組套設於藥劑瓶外側，且可拆組的組接安全針頭套組，注射推桿組其推桿伸入注射套筒組與藥劑瓶內，提供注射時推擠藥劑瓶活塞的部件，其中藉由注射套筒組以其接合套管與針頭套之藥瓶套蓋間係採取可拆組的旋轉組合構造，除能提供藥劑瓶的拆換功能，以及注射套筒組與注射推桿組等部分組件能夠夠重複使用外，藉由該可拆組的旋轉組合構造，使該組合式注射器於拆裝藥劑瓶的操作過程中具備良好的拆組簡便性。
