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    • 22. 发明授权
    • Double-blind infusion device and method
    • 双盲输液装置及方法
    • US5658248A
    • 1997-08-19
    • US511567
    • 1995-08-04
    • Enrique J. KleinAaron V. Kaplan
    • Enrique J. KleinAaron V. Kaplan
    • A61M5/14A61M5/00A61M5/168A61M39/00A61M1/00
    • A61M5/00
    • Type-A (operational) and type-B (non-operational) syringes (2A, 2B), used for double-blind clinical tests, are constructed so the type-B syringe mimics the operation of the type-A syringe while avoiding the delivery of anything into the patient. Each syringe includes an injector (4), a fluid connector (12) coupling the exit port (10) of the injector to a discharge port (14) to which a catheter or needle cannula is connected, a valve (18) positioned along the fluid connector, and a dumping reservoir (24) mounted to the valve. The type-A valve fluidly couples the exit port to the discharge port in both purging and infusion positions. The type-B valve couples the exit port to the discharge port in the purging position, but couples the exit port to the dumping reservoir in the infusion position. The infusate is directed through the catheter and into the patient when in the infusion position with the type-A valve but is directed into the dumping reservoir with the type-B valve.
    • 构建用于双盲临床试验的A型(可操作)和B型(非操作型)注射器(2A,2B),因此B型注射器模拟A型注射器的操作,同时避免 将任何东西交付给患者。 每个注射器包括注射器(4),将注射器的出口(10)连接到导管或针插管所连接的排出口(14)的流体连接器(12),沿着 流体连接器和安装到阀的倾倒储存器(24)。 A型阀在清洗和排液位置都将出口流体地连接到排出口。 B型阀将出口连接到排气位置的排出口,但将输出端口连接到倾倒储存器的输液位置。 当使用A型阀的输液位置时,输注物通过导管引导进入患者,但是用B型阀引导到倾倒储存器中。