This creation is a kind of syringe,It includes a Combined injector ontology,One medicine container,One injection putter,One syringe needle and a protecting cover,The Combined injector ontology is mainly with removable group of operating sleeve to be composed of accommodating sleeve,Making the medicine container for being provided with fixed dosage injection medicament, removably group is set wherein,Group, which sets the injection putter in what operating sleeve, can push against piston in medicine container,It removable group of syringe needle installs on what accommodating sleeve,The needle body of syringe needle punctures the closed end cap of medicine container and protrudes into wherein,Removable group of protecting cover be arranged what syringe needle and accommodating sleeve on the outside of,It is thereby the component of jettisonable using the medicine container and syringe needle that are provided with fixed dosage injection medicament,To meet the safety in utilization of injection medicament,Recycling can be then repeated several times in remaining component,Material can be saved,Reduce unnecessary waste of material.本創作是一種注射器，其包含一組合式注射器本體、一藥劑容器、一注射推桿、一針頭與一護蓋，該組合式注射器本體主要係由容置套筒與操作套筒可拆組地組合而成，使內裝有固定劑量注射用藥劑的藥劑容器可更換地組設其中，組設於操作套筒中之注射推桿能推抵藥劑容器中的活塞，針頭可拆組地裝設於容置套筒上，針頭之針體穿刺藥劑容器之封閉端蓋而伸入其中，護蓋可拆組的套設於針頭與容置套筒外側，藉此利用內裝有固定劑量注射用藥劑的藥劑容器與針頭為可拋棄式之構件，以符合注射藥劑之使用安全性，其餘構件則能多次重複再利用，使其能節省材料，減少不必要的材料浪費。
