The present invention is a kind of related injection destructing safety needle set,Primary structure include one include pushing cylinder at a syringe and a flexible setting what syringe one end injection needle apparatus,A pushing cylinder has been defined on pushing cylinder seals soft set and a pushing cylinder piston portion,A syringe opening portion and a syringe engaging portion are respectively formed at the both ends of syringe,A syringe liquid outlet is formed at one end with syringe engaging portion,A pushing cylinder combination and a combination engaging portion have been defined on pushing cylinder,Self-destruction combination unit has been defined on injection needle apparatus,Self-destruction combination unit includes a self-destruction positioning component and a self-destruction conjugative component,Self-destruction conjugative component include an at least self-destruction engagement rod piece,At least self-destruction engaging lever hook fastener,One self-destruction keep in check portion,And a self-destruction connector,A self-destruction piston portion and a self-destruction blocking part have also been defined on self-destruction combination unit. Thereby, self-destruction combination unit is used Hou that can be permanently fixed in indwelling what syringe to close the aspect that is formationed can not remove at syringe liquid outlet, reach actively combine self-destruction and disengaging it is self-destructed can not reverse effect, so that it absolutely can not be made to sell again again and is used again.本發明為有關一種注射自毀安全針具，主要結構包括一包含有一針筒及一伸縮設置於針筒一端處之推筒的注射針具，推筒上界定有一推筒密封軟套及一推筒活塞部，針筒之兩端處分別形成有一針筒開口部及一針筒結合部，具有針筒結合部之一端處形成有一針筒出液口，推筒上界定有一推筒結合體及一結合體結合部，注射針具上界定有一自毀組合裝置，自毀組合裝置包含有一自毀定位組件及一自毀接合組件，自毀接合組件包含有至少一自毀接合桿件、至少一自毀接合桿勾卡件、一自毀掣肘部、及一自毀連接體，自毀組合裝置上還界定有一自毀活塞部及一自毀封塞件。藉此，自毀組合裝置經使用後可永久固定留置於針筒內以封閉針筒出液口處形成無法移除之態樣，達到主動結合自毀與脫離自毀的不可逆效果，使其絕對無法再製再售再用。
