A kind of needle guard mechanisms,Including a flexible wing component and a syringe needle connecting elements,Flexible wing component has a sheet body interconnecting piece of a pairs of wing body and the wing body being connected into pairs,There is at least one of which of pairs of wing body a syringe needle to store ditch,And pairs of wing body has a pairs of combination member group,Respectively on the pairs of wing body of position what,Syringe needle connecting elements is arranged on the axial line of what sheet body interconnecting piece and connects a syringe needle and a tube body,Syringe needle is identical as syringe needle storage ditch level height and shaped position is adapted,When the wing body for keeping syringe needle what pairs of mutually draws close overlapping,It can accommodate in storage what syringe needle storage ditch,And so that pairs of wing body is steadilyed maintain what folded state by combination member group,Event is pricked to avoid needle.一種針頭保護裝置，包括一可撓蝶翼構件及一針頭連接構件，可撓蝶翼構件具有一成對的蝶翼體以及連接成對的蝶翼體的一片體連接部，成對的蝶翼體的至少其中一個具有一針頭收納溝，且成對的蝶翼體具有一成對的結合構件組，分別位於成對的蝶翼體上，針頭連接構件設置於片體連接部之軸心線上而連接一針頭與一管體，針頭與針頭收納溝水平高度相同且形狀位置相適配，使針頭於成對的蝶翼體為相互靠攏疊合時，能容置收納於針頭收納溝中，並藉由結合構件組使成對的蝶翼體為穩固地保持於折疊狀態，以避免針扎事件發生。
