Bidirectional lateral flow test strip and method
    5.
    发明授权
    Bidirectional lateral flow test strip and method 有权
    双向横向流动试纸和方法

    公开(公告)号:US07229839B2

    公开(公告)日:2007-06-12

    申请号:US10346683

    申请日:2003-01-17

    IPC分类号: G01N33/53

    摘要: A test strip adapted to receive a sample and detect an analyte therein is provided. The test strip comprises a sample addition zone to which a sample may be added; an absorbent zone proximal to the sample addition zone; one or more test zones distal to the sample addition zone, at least one of the test zones including a first analyte binding agent immobilized therein which is capable of binding to the analyte to be detected; and a terminal sample flow zone distal to the one or more test zones, the absorbent zone being positioned relative to the sample addition zone and having an absorption capacity relative to the other zones of the test strip such that a distal diffusion front of a sample added to the sample addition zone diffuses from the sample addition zone to a distal diffusion point within the terminal sample flow zone and then reverses direction and diffuses proximal relative to the one or more test zones.

    摘要翻译: 提供了适于接收样品并检测其中的分析物的测试条。 测试条包括可以加入样品的样品添加区域; 靠近样品添加区的吸收区; 至少一个测试区域包括固定在其中的能够结合待检测分析物的第一分析物结合剂; 以及远离所述一个或多个测试区域的终端样品流动区域,所述吸收区域相对于所述样品添加区域定位,并且相对于所述测试条带的其它区域具有吸收能力,使得样品的远端扩散前沿 到样品添加区域从样品添加区域扩散到终端样品流动区域内的远端扩散点,然后反转方向并相对于一个或多个测试区域扩散近端。

    Bidirectional lateral flow test strip and method
    6.
    发明授权
    Bidirectional lateral flow test strip and method 有权
    双向横向流动试纸和方法

    公开(公告)号:US06528323B1

    公开(公告)日:2003-03-04

    申请号:US09332933

    申请日:1999-06-14

    IPC分类号: G01N3353

    摘要: A test strip adapted to receive a sample and detect an analyte therein is provided. The test strip comprises a sample addition zone to which a sample may be added; an absorbent zone proximal to the sample addition zone; one or more test zones distal to the sample addition zone, at least one of the test zones including a first analyte binding agent immobilized therein which is capable of binding to the analyte to be detected; and a terminal sample flow zone distal to the one or more test zones, the absorbent zone being positioned relative to the sample addition zone and having an absorption capacity relative to the other zones of the test strip such that a distal diffusion front of a sample added to the sample addition zone diffuses from the sample addition zone to a distal diffusion point within the terminal sample flow zone and then reverses direction and diffuses proximal relative to the one or more test zones.

    摘要翻译: 提供了适于接收样品并检测其中的分析物的测试条。 测试条包括可以加入样品的样品添加区域; 靠近样品添加区的吸收区; 至少一个测试区域包括固定在其中的能够结合待检测分析物的第一分析物结合剂; 以及远离所述一个或多个测试区域的终端样品流动区域,所述吸收区域相对于所述样品添加区域定位,并且相对于所述测试条带的其它区域具有吸收能力,使得样品的远端扩散前沿 到样品添加区域从样品添加区域扩散到终端样品流动区域内的远端扩散点,然后反转方向并相对于一个或多个测试区域扩散近端。

    Test sample color comparison device

    公开(公告)号:US5011290A

    公开(公告)日:1991-04-30

    申请号:US567699

    申请日:1990-08-14

    摘要: A test sample color comparison device is disclosed which has a casing unit with an insertion slot for inserting a color test sample therein, and a display section for displaying the color test sample adjacent at least one of a plurality of reference color shades, as the reference color shades are successively moved into position adjacent the color test sample by a manipulation wheel. When an operator determines that a reference color shade adjacent the test sample corresponds in color to the color of the test sample, he pushes a switch to cause a readout of stored information corresponding to the reference color shade then adjacent the test sample. Readout of the stored information is based on a bit pattern set by a plurality of converter switches which are turned on and off in different patterns which correspond to the different color shades as the reference color shades are moved into position by the manipulation wheel. An uneven pattern code section moves in association with the manipulatable wheel and actuates the converter switches. A preferred uneven pattern code section is arranged so that all of the converter switches are actuated roughly equally during a full rotation of the manipulatable wheel, and so that only one of the converter switches is switched on or off during incremental movement of the manipulable wheel.