PROBLEM TO BE SOLVED: To provide a blood collecting instrument which enables a double armed needle to be taken out from a holder only by folding an operation member in one direction without using unstable actions such as the deformation of a spring.SOLUTION: An operation member 10 is formed based on a pair of combinations. The operation member 10 is formed by integrally molding needle base fitting parts 11, an operation part 12, and a movable part 14. A pair of the needle base fitting parts 11 is formed approximately cylindrically. The operation member 10 is arranged on the terminal DE side of a holder body 20H. In a first state, the pair of the needle base fitting parts 11 is closed, and a double armed needle 2 is mounted. When shifting from the first state to a second state, the pair of the needle base fitting parts 11 will open if the operation member 10 is moved in one direction. In the second state, the double armed needle 2 is released from the needle base fitting parts 11, and the double armed needle 2 is released from a holder 20.COPYRIGHT: (C)2014,JPO&INPIT【課題】バネの変形等の不安定な作用を使用せず、操作部材を一方向に折りたたむ操作のみで、ホルダーから両端針を取り出すことのできる採血器具を提供すること。【解決手段】操作部材10は一対のコンビネーションにより形成している。操作部材10は針基嵌合部11と操作部12と可動部14とを一体成形している。針基嵌合部11は、一対で略円筒状となるように形成している。操作部材10はホルダー本体20Hの末端DE側に配置している。第一の状態では一対の針基嵌合部11は閉じて、両端針2を装着している。第一の状態から第二の状態に移行するとき、操作部材10を一方向に移動させると一対の針基嵌合部11は開く。第二の状態では、両端針2が、針基嵌合部11から離脱し、両端針2はホルダー20から離脱する。【選択図】図1
