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    • 5. 发明公开
    • 의료용 유체 유동 자동 차단 방법 & 자동 차단 밸브
    • 电动增强型自动四驱车厢SHUTOFF
    • KR1020070098865A
    • 2007-10-05
    • KR1020077016234
    • 2005-12-09
    • 케어퓨전 303, 인크.
    • 브라운휴스톤
    • A61M5/40A61M5/168
    • A61M5/40A61M5/1411A61M2205/0288
    • An automatic stop valve formed in a container of a medical fluid administration system includes an electrical field that attracts the float (50) and valve seat (70) together to shut off flow from the exit port of the container when the fluid within the container is reduced to a predetermined level. One or both of the float and valve seat creates an electric field that attracts the other, which is made of a non-magnetic dielectric, into engagement. In one embodiment, the valve seat is formed of an electret that creates the electric field attracting the float to it to stop flow. In another embodiment, the float comprises an electret that attracts the float to the dielectric valve seat. In yet another embodiment, both the float and valve seat include electrets of opposite polarity that attract each other into engagement. The lack of magnetic and metallic materials makes the shut off valve suitable for use in an MRI environment.
    • 形成在医用流体管理系统的容器中的自动截止阀包括一个电场,当容器内的流体是容器内时,吸引浮子(50)和阀座(70)在一起,以阻止从容器的出口流出 减少到预定水平。 浮子和阀座中的一个或两个产生吸引另一个由非磁性电介质制成的电场的电场。 在一个实施例中,阀座由驻极体形成,该驻极体产生吸引浮子以阻止流动的电场。 在另一个实施例中,浮子包括吸引浮子到介质阀座的驻极体。 在另一个实施例中,浮子和阀座都包括彼此相互接合的相反极性的驻极体。 缺乏磁性和金属材料使截止阀适用于MRI环境。