A kind of syringe needle recovery structure of what is closed in this creation system,Its mainly by outer cylinder,Needle stand,Push rod and standard needle are formed,Wherein outer cylinder system is a hollow cylinder,What outer cylinder front end system forms a connecting hole communicated with the hollow cylinder,A needle stand is then arranged in position what connection hole,And the needle stand then define a positioning region to fix a standard needle,Then extend a convex hook at positioning region,And convex hook is formed by cut then and can allow and hooks body by can bend each other when inward pressure,One push rod of system's setting in the what said hollow cylinder of position,What push rod front end system extend one for group unification piston a nose bar,The piston system forms a fixed part,It can be fixed to each other with convex hook through fixed part,Using makes injection finish Hou,Applying a strength deforms piston press,Simultaneously hook body also stress Hou bend inwards so that piston and it is convex hook be combined with each other,And so that needle stand is disconnected hole and be drawn back into inside syringe with standard needle.本創作係關於一種注射器針頭回收結構，其主要由外筒、針座、推桿及標準針所組成，其中外筒係為一中空筒體，於外筒前端係形成一與該中空筒體相通之連接孔，位於連接孔處則設置一針座，而該針座則界定一定位部用以固定一標準針、背離定位部處則延伸一凸勾，而凸勾所形成的破口則可讓勾體受向內壓力時可彼此彎折，位於前述中空筒體內係設置一推桿，於推桿前端係延伸一供組合一活塞之凸桿，該活塞係形成一固定部，透過固定部可與凸勾相互固定，藉以使注射完畢後，施加一力量使活塞擠壓變形，同時勾體亦受力後向內彎折以使活塞與凸勾相互結合，而使針座脫離連接孔與標準針被拉回至針筒內部。
