Instrument for measuring the deforming capacity of red blood corpuscles
    1.
    发明授权
    Instrument for measuring the deforming capacity of red blood corpuscles 失效
    用于测量红血球变形能力的仪器

    公开(公告)号:US4521729A

    公开(公告)日:1985-06-04

    申请号:US489672

    申请日:1983-04-28

    摘要: For measuring the deformation capacity of erythrocytes use is made of a sample vessel that is walled off into two spaces by a piece of foil with a pore therein. One such space is filled with buffer solution with erythrocytes and the other is filled with buffer solution without erythrocytes. A pressure head is produced acting across the foil for causing transit or passage of the erythrocytes through the opening, whose diameter is less than the major quiescent diameter of an erythrocyte so that information on the deformation capacity may be produced by measuring the transit time. This is done by electrodes placed on the two sides of the opening so that changes in the resistance to alternating current by an erythrocyte in transit may be sensed and the transit time taken. After about 200 transits the readings are processed in a processing unit.

    摘要翻译: 为了测量红细胞的变形能力,使用一个样品容器,该样品容器通过其中具有孔的一片箔片封闭成两个空间。 一个这样的空间填充有红细胞的缓冲溶液,另一个填充没有红细胞的缓冲溶液。 产生作用在箔片上的压力头,用于引起红细胞通过开口的直径小于红细胞主要静止直径的开口,从而可以通过测量通过时间来产生关于变形能力的信息。 这是通过放置在开口两侧的电极来实现的,以便可以感测运输中的红细胞对交流电阻的变化,并且所需的运送时间。 在大约200次转换之后,在处理单元处理读数。

    Apparatus for determining the viscosity of fluids, in particular blood
plasma
    2.
    发明授权
    Apparatus for determining the viscosity of fluids, in particular blood plasma 失效
    用于确定流体粘度,特别是血浆的装置

    公开(公告)号:US4554821A

    公开(公告)日:1985-11-26

    申请号:US522203

    申请日:1983-08-11

    CPC分类号: G01N9/26 G01N11/06

    摘要: An apparatus for determining the viscosity of fluids, particularly blood plasma, includes an outer housing including a front surface having a groove therein; a disposable capillary tube removably mounted in the groove and including at least one loop, each of the loops having two substantially horizontal branches including an upper branch and a lower branch for flowing the fluid under the influence of gravity through a predetermined path, and a device for measuring the rate of flow of the fluid along the path in one of the horizontal branches. Also disclosed is a flexible disposable capillary tube for the fluid viscosity measuring apparatus.

    摘要翻译: 用于确定流体,特别是血浆的粘度的装置包括外壳,其包括其中具有槽的前表面; 可拆卸地安装在凹槽中并且包括至少一个环的一次性毛细管,每个环具有两个基本上水平的分支,包括上分支和下分支,用于在重力作用下通过预定路径流动流体;以及装置 用于测量流体沿着一个水平分支中的路径的流速。 还公开了一种用于流体粘度测量装置的灵活的一次性毛细管。

    Instrument for measuring the hematocrit value of blood
    3.
    发明授权
    Instrument for measuring the hematocrit value of blood 失效
    用于测量血液血细胞比容值的仪器

    公开(公告)号:US4547735A

    公开(公告)日:1985-10-15

    申请号:US460565

    申请日:1983-01-24

    CPC分类号: G01N33/49

    摘要: The new instrument for taking readings of the hematocrit value from a blood sample has two electrodes with which the conductivity of the sample may be measured. The sample contacting faces of the electrodes are placed in a horizontal plane with an accurately fixed spacing therebetween so that a blood column of a given size may be formed from the sample. The sample is acted upon by ac. From a reading representative of the change in impedance the hematocrit value may be read off from a calibration curve.

    摘要翻译: 用于从血液样品中读取血细胞比容值的新仪器具有可以测量样品的电导率的两个电极。 将电极的样品接触面放置在水平平面中,其间具有精确固定的间隔,使得可以从样品形成给定尺寸的血柱。 样品由ac进行。 从读数代表阻抗的变化可以从校准曲线读出血细胞比容值。

    Apparatus for determining the flow shear stress of suspensions in
particular blood
    5.
    发明授权
    Apparatus for determining the flow shear stress of suspensions in particular blood 失效
    用于确定悬浮液在特定血液中的流动剪切应力的装置

    公开(公告)号:US4519239A

    公开(公告)日:1985-05-28

    申请号:US493594

    申请日:1983-05-11

    CPC分类号: G01N11/08 G01N33/49

    摘要: The invention concerns a measuring apparatus for checking and determining the flow shear stress of certain suspensions, principally blood, by a static or dynamic method and to thereby plot the viscosity of the suspension. The apparatus employs an internal measuring chamber comprised of a passage arrangement to simulate the natural microcirculation area wherein a network of capillary passages diverge from a main passage, with at least two of the capillary passages of different lengths, with a length ratio that can range from 3:1 to 15:1, with those capillaries connected to a source of variable pressure and extending past a detector unit.

    摘要翻译: 本发明涉及一种用于通过静态或动态方法检查和确定某些悬浮液(主要是血液)的流动剪切应力并由此绘制悬浮液的粘度的测量装置。 该装置采用由通道装置组成的内部测量室,以模拟天然微循环区域,其中毛细管道网络与主通道分开,具有不同长度的至少两个毛细通道,长度比可以从 3:1至15:1,这些毛细管连接到可变压力源并延伸通过检测器单元。