Method and apparatus for aspirating and dispensing liquids
    1.
    发明授权
    Method and apparatus for aspirating and dispensing liquids 有权
    抽吸和分配液体的方法和装置

    公开(公告)号:US06322752B1

    公开(公告)日:2001-11-27

    申请号:US09392161

    申请日:1999-09-08

    IPC分类号: B01L302

    CPC分类号: G01N35/1097 G01N35/10

    摘要: A method and apparatus for aspirating and dispensing precise volumes of liquid, e.g. whole blood, comprises an aspiration probe or needle having an internal volume precisely equal to a desired volume to be dispensed, and a computer-controlled shear valve for trapping aspirated liquid inside the probe for subsequent dispensing. A liquid sensor positioned downstream of the shear valve cooperates with a liquid level sensor on the probe tip to assure that the probe lumen is filled with the aspirated liquid.

    摘要翻译: 用于吸取和分配精确体积的液体的方法和装置,例如, 全血包括具有精确地等于要分配的期望体积的内部容积的抽吸探针或针,以及计算机控制的剪切阀,用于将吸入的液体捕获在探针内用于随后的分配。 定位在剪切阀下游的液体传感器与探针尖端上的液位传感器配合,以确保探针腔充满抽吸液体。