Fluid mixing and delivery in microfluidic systems

    公开(公告)号:US10953398B2

    公开(公告)日:2021-03-23

    申请号:US15828999

    申请日:2017-12-01

    Abstract: The specification generally discloses systems and methods for mixing and delivering fluids in microfluidic systems. The fluids can contain, in some embodiments reagents that can participate in one or more chemical or biological reactions. Some embodiments relate to systems and methods employing one or more vent valves to controllably flow and/or mix portions of fluid within the microfluidic system. Advantageously, fluid control such as a sequence of fluid flow and/or a change in flow rate, can be achieved by opening and closing one or more vent valves and by applying a single source of fluid flow (e.g., a vacuum) operated at a substantially constant pressure. This can simplify the operation and use of the device by an intended user.

    MIXING OF FLUIDS IN FLUIDIC SYSTEMS
    4.
    发明申请

    公开(公告)号:US20170167958A1

    公开(公告)日:2017-06-15

    申请号:US15443453

    申请日:2017-02-27

    Abstract: Fluidic devices and methods associated with mixing of fluids in fluidic devices are provided. In some embodiments, a method may involve the mixing of two or more fluids in a channel segment of a fluidic device. The fluids may be in the form of, for example, at least first, second and third fluid plugs, composed of first, second, and third fluids, respectively. The second fluid may be immiscible with the first and third fluids. In certain embodiments, the fluid plugs may be flowed in series in the channel segment, e.g., in linear order, causing the first and third fluids to mix without the use of active components such as mixers. The mixing of fluids in a channel segment as described herein may allow for improved performance and simplification in the design and operations of fluidic devices that rely on mixing of fluids.

    Reagent storage in microfluidic systems and related articles and methods

    公开(公告)号:US10589265B2

    公开(公告)日:2020-03-17

    申请号:US15840159

    申请日:2017-12-13

    Abstract: Fluidic devices and methods including those that provide storage and/or facilitate fluid handling of reagents are provided. Fluidic devices described herein may include channel segments positioned on two sides of an article, optionally connected by an intervening channel passing through the article. The channel segments may be used to store reagents in the device prior to first use by an end user. The stored reagents may include fluid plugs positioned in linear order so that during use, as fluids flow to a reaction site, they are delivered in a predetermined sequence. The specific geometries of the channel segments and the positions of the channel segments within the fluidic devices described herein may allow fluid reagents to be stored for extended periods of time without mixing, even during routine handling of the devices such as during shipping of the devices, and when the devices are subjected to physical shock or vibration.

    Systems and devices for analysis of samples

    公开(公告)号:US10456784B2

    公开(公告)日:2019-10-29

    申请号:US15588548

    申请日:2017-05-05

    Abstract: Systems and methods for analysis of samples, and in certain embodiments, microfluidic sample analyzers configured to receive a cassette containing a sample therein to perform an analysis of the sample are described. The microfluidic sample analyzers may be used to control fluid flow, mixing, and sample analysis in a variety of microfluidic systems such as microfluidic point-of-care diagnostic platforms. Advantageously, the microfluidic sample analyzers may be, in some embodiments, inexpensive, reduced in size compared to conventional bench top systems, and simple to use. Cassettes that can operate with the sample analyzers are also described.

    Reagent storage in microfluidic systems and related articles and methods
    10.
    发明授权
    Reagent storage in microfluidic systems and related articles and methods 有权
    微流体系统中的试剂储存及相关文章和方法

    公开(公告)号:US09561506B2

    公开(公告)日:2017-02-07

    申请号:US14035885

    申请日:2013-09-24

    Abstract: Fluidic devices and methods including those that provide storage and/or facilitate fluid handling of reagents are provided. Fluidic devices described herein may include channel segments positioned on two sides of an article, optionally connected by an intervening channel passing through the article. The channel segments may be used to store reagents in the device prior to first use by an end user. The stored reagents may include fluid plugs positioned in linear order so that during use, as fluids flow to a reaction site, they are delivered in a predetermined sequence. The specific geometries of the channel segments and the positions of the channel segments within the fluidic devices described herein may allow fluid reagents to be stored for extended periods of time without mixing, even during routine handling of the devices such as during shipping of the devices, and when the devices are subjected to physical shock or vibration.

    Abstract translation: 提供了流体装置和方法,包括提供储存和/或促进试剂的流体处理的流体装置和方法。 本文描述的流体装置可以包括定位在物品两侧的通道段,可选地通过穿过物品的居间通道连接。 通道段可以用于在终端用户首次使用之前将试剂存储在设备中。 储存的试剂可以包括以线性顺序定位的流体塞,使得在使用期间,当流体流到反应部位时,它们以预定的顺序递送。 通道段的特定几何形状和本文所述的流体装置内的通道段的位置可以允许流体试剂在不混合的情况下长时间储存​​,即使在设备的例行处理期间,例如装置运输期间, 并且当设备遭受物理冲击或振动时。

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