The purpose of the present invention what provide one kind make sampling fixator and it is anti-error thorn with the more conventional blood drawing group for being more difficult to fall off of needle cover. System of the present invention have sampling fixator (100) and it is anti-error thorn with needle cover (200) blood drawing group (500). Sampling fixator (100) system has cylindrical body (110), lid (130) and the fitting portion (140) with the circumferential flange and fastener as flange part. It is anti-error thorn with needle cover (200) system with can engage what sampling fixator (100) fastener engaged part (250).本發明之目的在於提供一種使取樣固定器與防誤刺用之針蓋較習知更難以脫落之抽血組。本發明係具備取樣固定器(100)與防誤刺用之針蓋(200)之抽血組(500)。取樣固定器(100)係具備筒狀體(110)、蓋體(130)、以及具有作為凸緣部之圓周凸緣與卡止部之嵌合部(140)。防誤刺用之針蓋(200)係具有可卡止於取樣固定器(100)之卡止部之被卡止部(250)。
