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    • 10. 发明申请
    • SYSTEM AND METHOD TO PREVENT CROSS-CONTAMINATION IN ASSAYS PERFORMED IN A MICROFLUDIC CHANNEL
    • 用于防止在微波通道中进行的测定中的交叉污染的系统和方法
    • WO2010002811A1
    • 2010-01-07
    • PCT/US2009/049100
    • 2009-06-29
    • CANON U.S. LIFE SCIENCES, INC.ZENG, Shulin
    • ZENG, Shulin
    • G01N33/00
    • B01L3/50273B01L2200/141B01L2300/0816B01L2300/0877B01L2400/0487
    • The present application discloses systems and methods for preventing contamination in assays performed in microfluidic channels. In one embodiment, a buffer of non-reactive fluid is provided between an input port and a microchannel in which assays are performed during such times that flow from the input port is stopped. In general, an amount of non-reactive fluid is drawn into a channel connecting the stopped input port to the microchannel. Thus, any seepage, or diffusion, from the channel connecting the stopped input port to the microchannel will be of the non-reactive fluid, not the reagent, or other potentially-contaminating fluid, introduced through the input port. In one embodiment, microvalves and a negative pressure differential source control flow of reagents into the microchannel and the flow of non-reactive fluid into the inlet conduits.
    • 本申请公开了用于防止在微流体通道中进行的分析中的污染的系统和方法。 在一个实施例中,在输入端口和微通道之间提供非反应性流体的缓冲液,其中在从输入端口的流动停止的时间期间进行测定。 通常,一定量的非反应流体被吸入连接停止的输入端口到微通道的通道中。 因此,从连接停止的输入端口到微通道的通道的任何渗流或扩散将是通过输入端口引入的非反应性流体,而不是试剂或其它潜在污染的流体。 在一个实施例中,微阀和负压差压源控制试剂进入微通道的流动以及非反应流体流入入口导管。