Blood processing systems with fluid flow cassette with a pressure actuated pump chamber and in-line air trap
    3.
    发明申请
    Blood processing systems with fluid flow cassette with a pressure actuated pump chamber and in-line air trap 有权
    血液处理系统具有流体流动盒,带有压力驱动泵室和直列空气阱

    公开(公告)号:US20030138334A1

    公开(公告)日:2003-07-24

    申请号:US10287560

    申请日:2002-11-04

    Abstract: A blood processing system comprises a processing chamber to process blood and a fluid flow cassette that communicates with the processing chamber. The cassette comprises a body, a pump chamber formed in the body, and a flexible diaphragm on the pump chamber responsive to an applied fluid pressures for flexure toward and away from the pump chamber to pump fluid through the pump chamber. The cassette also includes a flow path formed, at least in part, in the body to couple the pump chamber in fluid flow communication with the processing chamber, to convey fluid pumped by the pump chamber into the processing chamber. The cassette also includes an in line cavity formed in the body and located in the flow path to trap air to prevent entry of air into the processing chamber.

    Abstract translation: 血液处理系统包括处理血液的处理室和与处理室连通的流体流动盒。 盒体包括主体,形成在主体中的泵室,以及响应于所施加的流体压力的柔性膜片,其响应于朝向和远离泵室的挠曲,以将流体泵送通过泵室。 该盒还包括至少部分地形成在主体中的流路,以将泵室与处理室流体流动连通,以将泵室泵送的流体输送到处理室中。 该盒还包括形成在主体中并且位于流动路径中的吸入空气以防止空气进入处理室的入口腔。

    Systems and methods for sensing red blood cell hematocrit
    7.
    发明申请
    Systems and methods for sensing red blood cell hematocrit 有权
    用于感测红细胞血细胞比容的系统和方法

    公开(公告)号:US20020011449A1

    公开(公告)日:2002-01-31

    申请号:US09901986

    申请日:2001-07-10

    Abstract: Red blood cell sensing systems and methods rely upon straightforward measurement geometries. the systems and methods comprise an incident light source, an optical sensor, and a blood collection tube. The systems and methods hold the blood collection tube a predetermined radial distance from the incident light source where a linear relationship exists between sensed reflected light measured by the optical sensor and red blood cell hematocrit in a range of at least 10 to 90. The systems and methods make possible accurate red blood sensing without use of special optical cuvettes, mirrors, or focusing lenses. The systems and methods also make possible the use of standard transparent plastic tubing, without reliance upon special optical cuvettes.

    Abstract translation: 红细胞感测系统和方法依赖于简单的测量几何。 系统和方法包括入射光源,光学传感器和采血管。 系统和方法将采血管保持与入射光源预定的径向距离,其中在由光学传感器测量的感测反射光与红细胞血细胞比容之间存在线性关系,范围在至少10至90°。系统和 方法可以在不使用特殊的光学比色杯,镜子或聚焦镜片的情况下进行准确的红血传感。 系统和方法也可以使用标准的透明塑料管,而不依赖于特殊的光学比色皿。

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