32.
    发明专利
    未知

    公开(公告)号:NO20012172D0

    公开(公告)日:2001-05-02

    申请号:NO20012172

    申请日:2001-05-02

    Applicant: BAXTER INT

    Abstract: Blood processing systems and related methods place first and second fluid pressure actuated pump stations in in-line communication between a source and a destination. The systems and methods apply fluid pressure pump strokes to the first and second pump stations to convey fluid from the source to the destination. The systems and methods switch between a first flow mode and a second flow mode. In the first flow mode, the pump strokes draw a fluid volume into the first pump station from the source and expel a fluid volume from the second pump station to the destination. In the second flow mode, the pump strokes draw a fluid volume into the second pump station from the source and expel a fluid volume from the first pump station to the destination. The systems and methods synchronize the pump strokes so that fluid flow from the source is essentially continuous while fluid flow to the destination is pulsatile.

    SYSTEMS FOR SENSING RED BLOOD CELL HEMATOCRIT

    公开(公告)号:CA2346906A1

    公开(公告)日:2001-03-15

    申请号:CA2346906

    申请日:2000-08-29

    Applicant: BAXTER INT

    Abstract: Red blood cell sensing systems rely upon straightforward measurement geometries. The systems are based around a sensing station (332) having incident light source containing optical sensor s (334) and (336) and blood collection tubes (290), (292) and (294). The systems hold the blood collection tubes (290), (292) and (294 ) a predetermined radial distance from the sensors (334) and (336), where a linear relationship exists between sensed reflected light measured by the sensor; (334) and (336) and red blood cell hematocrit in a range of at least 10 to 90. The systems make possible accurate red blood sensing without use of special optical cuvettes, mirrors, or focusing lenses. The systems also make possible the us e of standard transparent plastic tubing, without reliance upon special optical cuvettes.

    40.
    发明专利
    未知

    公开(公告)号:NO20012171L

    公开(公告)日:2001-06-26

    申请号:NO20012171

    申请日:2001-05-02

    Applicant: BAXTER INT

    Abstract: A blood separation system (10) is described. The system comprises a device (14, 18) which, in use, operates to separate whole blood into red blood cells and plasma, a whole blood inlet line (290) for conveying a flow of whole blood into the device, a plasma collection line (292) for conveying a flow of plasma from the device, and a red blood cell collection line (294) for conveying a flow of red blood cells from the device. A first sensing assembly (334) including a first sensor in the plasma collection line is provided which in use operates to detect a characteristic of plasma in the flow of plasma and to generate a first output. A second sensing assembly (336) including a second sensor in the red blood cell collection line is provided which in use operates to detect a characteristic of red blood cells in the flow of red blood cells and to generate a second output. A controller (16) operates to control flows in the plasma collection line and the red blood cell collection line based upon the first and second outputs.

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