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    • 1. 发明授权
    • Assembly for separating formed constituents from a liquid constituent in a complex biologic fluid sample
    • 用于将复合生物流体样品中的成分成分与液体成分分离的装置
    • US06387325B1
    • 2002-05-14
    • US09414803
    • 1999-10-08
    • Preston KeuschStephen C. Wardlaw
    • Preston KeuschStephen C. Wardlaw
    • G01N3300
    • G01N1/4077G01N1/38G01N15/1456G01N2001/302G01N2015/008G01N2015/0084G01N2015/1486G02B21/34
    • Formed constituents in an aqueous based fluid biologic material sample are separated from the aqueous constituent of the sample, and are concentrated in an examining instrument's focal plane where they can be examined under magnification. Examples of fluids that can be analyzed in this fashion include urine; cerebrospinal fluid; pleural fluid; ascites; fluids aspirated from cysts such as thyroid and breast cysts; cytologic specimens which have been placed in an aqueous fluid; platelet-rich plasma; and the like. The sample is placed in a chamber having a layer of a hydrophilic hydrogel covering a surface of the chamber. An opposite surface of the chamber is transparent, and may be formed by a microscope slide cover slip, or the like. The volume of hydrogel in the chamber is sufficient so that, when the hydrogel absorbs essentially all of the aqueous fraction of the sample, the hydrogel will expand and fill the chamber. The capture surface of the expanded hydrogel is preferably planar, and any formed constituents in the sample will be captured on the capture surface of the hydrogel layer, and will not be absorbed into the hydrogel. Formed constituents, such as: cells; bacteria; crystals; protozoa; ova; parasites; and the like, can be differentially highlighted by use of labeled antibodies, selective stains, or the like, so as to enable optical examination and differentiation of various formed constituents which may be in the sample. Formed constituents may be harvested from the capture surface of the expanded hydrogel layer for more detailed examination and analysis. The capture surface of the hydrogel may be provided with a plurality of beads for use in locating the capture surface with an optical scanning instrument, and for re-establishing previously scanned fields of view.
    • 将含水基流体生物材料样品中的成分与样品的水性成分分离,并浓缩在检查仪的焦平面上,在此可以在放大倍数下进行检查。 可以以这种方式分析的流体的实例包括尿液; 脑脊液 胸膜液 腹水; 从囊肿如甲状腺和乳腺囊肿吸出的液体; 已经置于水性液体中的细胞学标本; 血小板富集血浆 等等。 将样品放置在具有覆盖室的表面的亲水性水凝胶层的室中。 室的相对表面是透明的,并且可以由显微镜滑盖盖等形成。 腔室中的水凝胶的体积是足够的,使得当水凝胶基本上吸收样品的所有含水部分时,水凝胶将膨胀并填充室。 膨胀的水凝胶的捕获表面优选是平面的,并且样品中的任何形成的成分将被捕获在水凝胶层的捕获表面上,并且不会被吸收到水凝胶中。 形成成分,如:细胞; 菌; 晶体 原生动物 奥娃 寄生虫 可以通过使用标记的抗体,选择性污渍等差异地突出显示,以便能够对可能在样品中的各种形成的成分进行光学检查和分化。 可以从膨胀的水凝胶层的捕获表面收获成形成分,以进行更详细的检查和分析。 水凝胶的捕获表面可以设置有多个珠子,用于使用光学扫描仪器来定位捕获表面,并且用于重建先前扫描的视场。
    • 9. 发明授权
    • Method and apparatus for determining the hematocrit of a blood sample utilizing the intrinsic pigmentation of hemoglobin contained within the red blood cells
    • 利用红细胞内含有的血红蛋白的内在色素沉淀来测定血液样品的血细胞比容的方法和装置
    • US08133738B2
    • 2012-03-13
    • US13116837
    • 2011-05-26
    • Robert A. LevineStephen C. WardlawDarryn UnfrichtNiten V. Lalpuria
    • Robert A. LevineStephen C. WardlawDarryn UnfrichtNiten V. Lalpuria
    • G01N33/48G01N33/86
    • G01N33/80A61B5/145G01N15/1463G01N15/1475G01N33/48G01N33/49G01N33/721G01N33/86
    • A method for determining the hematocrit of a blood sample is provided that includes the steps of: 1) depositing the sample into an analysis chamber adapted to quiescently hold the sample for analysis, the chamber defined by the interior surfaces of first and second panels and a height extending there between, wherein both panels are transparent, and the height is such that at least some of the red blood cells within the sample contact both interior surfaces of the panels and one or more lacunae within the quiescent sample extend between the interior surfaces; 2) imaging at least a portion of the quiescent sample, which sample portion contains the red blood cells and one or more lacunae to determine an optical density of the imaged portion of the sample on a per image unit basis; 3) selecting and averaging the optical density values of the image units aligned with the red blood cells contacting the interior surfaces, and assigning an upper boundary value of 100% to the average optical density value of those image units; 4) selecting the optical density values of the image units aligned with the one or more lacunae, and assigning a lower boundary value of 0% to the optical density values of those image units; and 5) determining the hematocrit of the sample by assigning relative values to the optical density value of each image of the imaged sample portion as a function of the upper and lower boundary values, and averaging the relative values.
    • 提供了一种用于确定血液样本的血细胞比容的方法,其包括以下步骤:1)将样品沉积到适于静态保持样品进行分析的分析室中,由第一和第二面板的内表面限定的腔室和 高度在其间延伸,其中两个面板是透明的,并且高度使得样品中的至少一些红细胞接触面板的两个内表面,并且静止样品内的一个或多个空隙在内表面之间延伸; 2)对静止样品的至少一部分进行成像,该样品部分包含红细胞和一个或多个空隙,以基于每个图像单位确定样品的成像部分的光密度; 3)选择和平均与内表面接触的红细胞对准的图像单元的光密度值,并将上限边界值分配给这些图像单元的平均光密度值; 4)选择与一个或多个空白对齐的图像单元的光密度值,并为这些图像单元的光密度值分配0%的下边界值; 以及5)通过将所述成像样本部分的每个图像的光密度值分配相对值作为上边界值和下边界值的函数来确定样本的血细胞比容,并平均相对值。