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    • 3. 发明授权
    • Fluid microdiode
    • 流体微二极管
    • US5730187A
    • 1998-03-24
    • US696990
    • 1996-10-16
    • Steffen HowitzMinh Tan Pham
    • Steffen HowitzMinh Tan Pham
    • A61M5/14B01F5/04B01F13/00B01L3/00F15C4/00F15C1/00
    • B01F13/0059B01F5/0475F15C4/00B01L3/5027Y10T137/206Y10T137/2224Y10T137/87652
    • The present invention pertains to a fluid microdiode for directionally incorporating a dosed fluid into another stationary or flowing target fluid contained in a closed system, especially in the submicroliter range. It is characterized by a planar arrangement of a microcapillary open on both sides or a system of closely juxtaposed microcapillaries open on both sides being in direct contact with the target fluid on the outlet side thereof and being separated from the discontinuously supplied dosed fluid on their inlet side by an air or gas cushion, forming a meniscus (6) which is curved according to the surface tension. As a device (1), said fluid microdiode consists of a stacked arrangement of a flow channel (9), the actual diode in the form of a grid structure formed by capillaries, and a spacer chip (2), securing the gaseous medium in the region of the coupling surface. These three stacked elements are prepared as modules using technologies of microstructural engineering and may be integrated in microsystems by means of microsystem engineering constructing and connecting techniques. The fluid microdiode is characterized by a simple construction and coupling flexibility to various microflow systems in which exists a hydrostatic pressure in the range of the prevailing ambient pressure.
    • PCT No.PCT / DE95 / 00200 Sec。 371 1995年10月16日第 102(e)日期1996年10月16日PCT提交1995年2月17日PCT公布。 公开号WO95 / 22696 日期1995年8月24日本发明涉及一种流体微二极管,用于将计量流体定向地结合到包含在封闭系统中,特别是在亚微米范围内的另一固定或流动目标流体中。 其特征在于在两侧开放的微毛细管的平面布置或两侧开放的紧密并排的微型毛细管系统与其出口侧上的目标流体直接接触并且在其入口处与不连续供应的流体流体分离 侧面由空气或气垫组成,形成根据表面张力弯曲的弯月面(6)。 作为装置(1),所述流体微二极管由流动通道(9)的堆叠布置构成,由毛细管形成的格栅结构形式的实际二极管和间隔片芯片(2)将气态介质固定在 耦合表面的区域。 这三个堆叠元件使用微结构工程技术作为模块准备,并可通过微系统工程构建和连接技术集成到微系统中。 流体微二极管的特征在于对各种微流系统的简单结构和耦合灵活性,其中存在在当前环境压力范围内的静水压力。