Multi-reservoir pressure control system
    1.
    发明授权
    Multi-reservoir pressure control system 有权
    多层压力控制系统

    公开(公告)号:US07171983B2

    公开(公告)日:2007-02-06

    申请号:US10916270

    申请日:2004-08-11

    IPC分类号: F15C1/04 F04B41/06

    摘要: Improved microfluidic devices, systems, and methods allow selective transportation of fluids within microfluidic channels of a microfluidic network by applying, controlling, and varying pressures at a plurality of reservoirs. Modeling the microfluidic network as a series of nodes connected together by channel segments and determining the flow resistance characteristics of the channel segments may allow calculation of fluid flows through the channel segments resulting from a given pressure configuration at the reservoirs. To effect a desired flow within a particular channel or series of channels, reservoir pressures may be identified using the network model. Viscometers or other flow sensors may measure flow characteristics within the channels, and the measured flow characteristics can be used to calculate pressures to generate a desired flow. Multi-reservoir pressure modulator and pressure controller systems can optionally be used in conjunction with electrokinetic or other fluid transport mechanisms.

    摘要翻译: 改进的微流体装置,系统和方法允许通过在多个储存器处施加,控制和改变压力来选择性地输送微流体网络的微流体通道内的流体。 将微流体网络建模为通过通道段连接在一起的一系列节点并且确定通道段的流动阻力特性可以允许计算通过在储存器处的给定压力构造导致的通道段的流体流动。 为了在特定通道或一系列通道内实现期望的流量,可以使用网络模型来识别储层压力。 粘度计或其他流量传感器可以测量通道内的流量特性,并且可以使用测量的流量特性来计算产生期望流量的压力。 多储层压力调节器和压力控制器系统可以可选地与电动或其它流体输送机构结合使用。

    METHODS OF DETECTING LOW COPY NUCLEIC ACIDS
    10.
    发明申请
    METHODS OF DETECTING LOW COPY NUCLEIC ACIDS 有权
    检测低拷贝核酸的方法

    公开(公告)号:US20080090244A1

    公开(公告)日:2008-04-17

    申请号:US11873753

    申请日:2007-10-17

    IPC分类号: C12Q1/68

    摘要: Methods are provided for detecting low copy nucleic acids of interest in a sample. In one method, a sample comprising a nucleic acid of interest is aliquotted into a plurality of reaction mixtures, at least two of which are single-copy reaction mixtures. The reaction mixtures are subjected to one or more amplification reactions while flowing through a channel of a microfluidic device. At least one of the reaction mixtures is formulated in an aqueous phase of an emulsion comprising aqueous droplets suspended in an immiscible liquid. The nucleic acid of interest is present as a single copy in at least one aqueous droplet of the aqueous phase prior to performing the amplification reaction(s). Amplification is performed on the reaction mixture when it is formulated in the emulsion. The nucleic acid is continuously flowed during a plurality of steps of the method.

    摘要翻译: 提供了用于检测样品中感兴趣的低拷贝核酸的方法。 在一种方法中,将包含感兴趣的核酸的样品等分成多个反应混合物,其中至少两个是单拷贝反应混合物。 反应混合物在流过微流体装置的通道时进行一次或多次扩增反应。 将至少一种反应混合物配制在包含悬浮在不混溶液体中的水性液滴的乳液的水相中。 感兴趣的核酸在进行扩增反应之前以水相的至少一个水滴形式存在于单拷贝中。 当将其配制在乳液中时,对反应混合物进行扩增。 在该方法的多个步骤期间,核酸连续流动。