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    • 3. 发明授权
    • Hypodermic syringe operable with double-looped ring
    • 皮下注射器可与双环环操作
    • US4324241A
    • 1982-04-13
    • US185600
    • 1980-09-09
    • William J. Reese
    • William J. Reese
    • A61M5/31A61M5/00
    • A61M5/31A61M5/3148
    • An improved syringe assembly is provided in which a double-looped ring member comprising an index finger loop and a stem loop, permits the index finger of one hand to be inserted in the index finger loop so as to actuate withdrawal of the plunger of the syringe. Utilization of the index finger allows the exertion of a withdrawal force on the plunger along a much flatter arc than if the thumb of the same hand is used. The different articulation of the index finger of a person's hand, compared with the articulation of the thumb, allows even an elderly person to utilize the syringe assembly with one hand, without binding the plunger in the barrel of the syringe. The double-looped ring member is made of wire stock, is removably positioned on the stem of the syringe, and the stem loop is necessarily movable with respect to the stem of the plunger. Further, though the wire loops are stiff, they are manually deformable.
    • 提供了一种改进的注射器组件,其中包括食指环和茎环的双环环构件允许一只手的食指插入食指环中,以便致动注射器的柱塞的抽出 。 如果使用同一只手的拇指,食指的利用可以沿着比平坦的圆弧更多地在柱塞上施加抽出力。 与拇指的关节相比,人的食指的不同的连接使得即使老年人也可以用一只手利用注射器组件,而不会将注射器的筒中的柱塞结合在一起。 双环环构件由线材制成,可移除地定位在注射器的杆上,并且杆环相对于柱塞的杆可以是可移动的。 此外,虽然线环是刚性的,但是它们是可手动变形的。