fundamentally the present design is a pen-type syringe and set forms inside once used the pen to insert the needle to bend the needle used by the insertion pressure to be crimped by a disposable needle and reuse of the cover for prevent, loosening the screws when you remove the needle and the syringe pen in a way, that relates to one-touch easily and safely discharged out of the syringe inside the pen cover to cover in the needle pressure way, Disposable pen after using the needle, rough insertion and separation process of the present design when disposing of needles, so already a bent needle or completely wrinkled, once in the door interior space, but is not limited to just cover the role of the traditional pen-type syringe use of the pen has a separate function and a separate needle pen that allows you to remove the needle from the syringe equipped with a spiral discharge function to discharge out of the inner cover to cover in one-touch mode pressure. Further, the pen-type syringes, needles attached pen and then use a needle without the need to purchase separately a separate pen needle ejector, by being reused to fundamentally impossible because it was bent needle that is used once a separate emissions or completely wrinkled of, the advantage that can prevent the risk of secondary infection by the unwanted physical contact that such a needle was pierced by carelessness during prevent contamination and infection due to repeated use of the needle, separating emissions, said needle mounted pen needle there is also a side-effect that can completely mudyeojin needling process safe and convenient disposal when due to the disposal after use.본 고안은 펜 타입 주사기와 세트를 이루는 덮개의 내부에 1회 사용된 펜 니들을 삽입하여 삽입압력에 의해 사용된 니들을 구부리고 구겨지게 하여 1회용 니들의 재사용을 원천적으로 막고, 나사 풀림 방식으로 상기 주사기와 상기 펜 니들을 분리할 시, 원 터치 압력방식으로 주사기 덮개 내부에서 상기 펜 니들을 덮개 밖으로 쉽고 안전하게 배출시키는 것에 관한 것으로서,1회용 펜 니들을 사용 후, 폐기할 시 본 고안의 삽입 및 분리과정을 거친 니들은 이미 니들이 완전히 구겨지거나 구부러진 상태가 되므로 기존의 펜 타입 주사기의 단순한 덮개역활에 국한되지 않고 상기 덮개 내부공간에 한번 사용된 상기 펜
