A kind of pricker,It is suitable for a blood-taking device,Its front end that there is a needle stand and a syringe needle to set the what needle stand,There is the head of a cylinder to be arranged for the syringe needle for the front end of the needle stand,Head set it is cylindrical,Its outer wall have two cambered surfaces and two the face of scabbling connection what this etc. between cambered surfaces,And head is along 0.5 millimeter of the big what of length of needle stand long axis direction,So can assemble in the sliding channel of what blood-taking device,And sliding channel has the cross sectional shape matched with head,Allowing between the two has a gap and can accommodate flash formed in pricker processing procedure,Smoothly to guide the movement of pricker,The vibration of pricker disengaging human body can be greatly reduced,The feeling of pain for allowing user to be subjected to is preferably minimized.一種刺針，適用於一採血裝置，其具有一針座與一針頭設於該針座之前端，該針座之前端具有一圓柱形之頭部以供該針頭設置，頭部設呈圓柱狀，其外壁具有二弧面以及二削平面連接於該等弧面之間，且頭部沿著針座長軸方向之長度大於0.5毫米，所以能組裝於採血裝置之滑動通道中，且滑動通道具有與頭部相配合之截面形狀，讓兩者之間具有一縫隙而能容納刺針製程中所形成的毛邊，以平順引導刺針的移動，能大幅降低刺針進出人體的震動，讓使用者所遭受的疼痛感降到最低。
