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    • 7. 发明申请
    • MULTI-STAGE FLUID DELIVERY DEVICE AND METHOD
    • 多级流体输送装置及方法
    • US20070156086A1
    • 2007-07-05
    • US11684837
    • 2007-03-12
    • James FentressKenneth Powell
    • James FentressKenneth Powell
    • A61M5/14
    • A61M5/145A61M5/148A61M5/16827A61M2005/14506
    • A fluid delivery device for delivering a substance to a patient by way of infusion delivers the preparation at a rate of flow which varies in steps from a substantially constant higher rate, to a stepped-down substantially constant lower rate or rates. The delivery device includes one or more reservoirs, and one or more Belleville springs for applying generally constant pressures to the substance contained in the reservoirs. Each reservoir will have a different constant pressure applied in a mid-range of operation. The reservoirs can be interconnected to each other and to an infusion device in a number of arrangements, including various manifolds and flow restrictors, such that the rate of flow is controlled in steps in accordance with the pressures applied by the springs of the plurality of reservoirs.
    • 用于通过输液将物质递送到患者的流体递送装置以从基本上恒定的较高速率到逐步降低的基本上恒定的较低速率或速率的逐步变化的速率递送制剂。 输送装置包括一个或多个储存器,以及一个或多个用于对容纳在储存器中的物质施加一般恒定压力的贝氏弹簧。 每个储存器将在中等范围的操作中施加不同的恒定压力。 储存器可以以包括各种歧管和限流器的多种布置的方式彼此互连并连接到输注装置,使得流速根据由多个储存器的弹簧施加的压力而逐步地控制 。