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    • 14. 发明申请
    • REVERSIBLE FLOW CHROMATOGRAPHIC BINDING ASSAY
    • 可逆流量色谱结合测定
    • WO1993003176A1
    • 1993-02-18
    • PCT/US1992006348
    • 1992-07-31
    • IDEXX LABORATORIES, INC.
    • IDEXX LABORATORIES, INC.CLARK, Scott, M.
    • C12Q01/00
    • G01N33/558B01L3/5023B01L3/5055B01L2300/0663B01L2300/0672B01L2400/0677B01L2400/0683G01N30/02G01N30/40G01N30/90Y10S435/805Y10S435/81Y10S435/97Y10S435/974Y10S435/975Y10S436/805Y10S436/807Y10S436/809Y10S436/81B01D15/3804
    • Disclosed are devices and methods for performing an assay which determines the presence or quantity of an analyte in a fluid sample by detecting binding of the analyte to at least one immobilized analyte capture reagent and washing unbound material from the immobilized analyte capture reagent. The devices and methods involve an elongated solid phase flow matrix, including capillary channels capable of driving capillary fluid movement, and further including (i) a first region adapted for receipt of the fluid sample, (ii) a second region at which the analyte capture reagent is immobilized, (iii) a third region for application of a wash reagent capable of removing unbound substances from the second region; and (iv) an absorbent reservoir of high volume capacity. The second region is positioned intermediate to the first region and the third region and intermediate to the absorbent reservoir and the third region. The device also includes means to detect analyte bound at the second region. The flow matrix and the regions thereof are sized and positioned to cause the fluid sample to flow initially along the elongated flow matrix in one direction toward and through the second region, and subsequently, the liquid reagent to flow along the elongated flow matrix in a second direction opposite the first direction, through the second region, and into the absorbent reservoir, drawing unbound substances with it.
    • 公开了用于进行测定的装置和方法,其通过检测分析物与至少一种固定的分析物捕获试剂的结合并从固定的分析物捕获试剂洗涤未结合的材料来确定流体样品中分析物的存在或数量。 所述装置和方法包括细长的固相流矩阵,包括能够驱动毛细管流体运动的毛细通道,并且还包括(i)适于接收流体样品的第一区域,(ii)分析物捕获的第二区域 试剂被固定,(iii)用于施加能够从第二区域除去未结合物质的洗涤试剂的第三区域; 和(iv)高容量的吸收剂储存器。 第二区域位于第一区域和第三区域的中间并且位于吸收容器和第三区域的中间。 该装置还包括检测在第二区域处结合的分析物的装置。 流动基质及其区域的尺寸和位置被设计成使得流体样品沿着细长流动基质首先沿着一个方向流动并穿过第二区域,随后液体试剂沿着细长流动基质在第二区域中流动 方向与第一方向相反,通过第二区域,并进入吸收剂储存器,用它吸引未结合的物质。