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    • 2. 发明申请
    • REACTIONS WITHIN MICROFLUIDIC CHANNELS
    • 微流通道中的反应
    • WO2009048533A3
    • 2009-10-08
    • PCT/US2008011457
    • 2008-10-03
    • HARVARD COLLEGESTONE HOWARD ARISTENPART WILLIAM DWAN JIANDI
    • STONE HOWARD ARISTENPART WILLIAM DWAN JIANDI
    • B01J19/00B01L3/00
    • B01J19/0093B01J2219/00783B01J2219/00824B01J2219/00828B01J2219/00831B01J2219/00833B01J2219/00837B01J2219/0086B01J2219/00889B01J2219/00891B01J2219/00957B01J2219/0097B01J2219/00986B01L3/502776B01L2300/0867B01L2400/0487G01N1/38G01N2001/4072
    • The present invention generally relates to microfluidics and, in particular, to microfluidic systems useful for determining reactions. In one aspect, two or more fluids are introduced into a microfluidic channel, and are allowed to come into contact. At or near the interface between the fluids, reactants contained within the fluids may react. By determining the reaction rate between the reactants with respect to position within the microfluidic channel, information about the reaction between the reactants can be obtained. The reaction rate may be determined, for instance, by measuring the rate of reaction at two or more points within the channel. In some cases, e.g., if the reaction rate can be determined optically or visually, the channel may be imaged and the image analyzed to determine the reaction rate. As a non-limiting example of a reaction, the reactants may be an enzyme and a substrate, and by determining reaction rates within the channel, Michaelis-Menten kinetics (or other reaction kinetics) of the enzymatic reaction may be determined. It should be understood, however, that other reactions besides Michaelis-Menten kinetics and/or enzymatic reactions may also be determined, including other catalytic or chemical reactions, and the like. The reaction profiles may be linear or non-linear, e.g., second order, third order, etc.
    • 本发明一般涉及微流体,特别涉及用于确定反应的微流体系统。 在一个方面,将两种或更多种流体引入微流体通道,并允许其接触。 在液体之间或界面附近,流体中包含的反应物可能会发生反应。 通过确定反应物相对于微流体通道内的位置的反应速率,可以获得关于反应物之间的反应的信息。 反应速率可以例如通过测量通道内两个或多个点处的反应速率来确定。 在一些情况下,例如,如果反应速率可以光学上或视觉上确定,则可以对通道进行成像,并分析图像以确定反应速率。 作为反应的非限制性实例,反应物可以是酶和底物,并且通过确定通道内的反应速率,可以确定酶反应的Michaelis-Menten动力学(或其他反应动力学)。 然而,应当理解,还可以确定除Michaelis-Menten动力学和/或酶反应之外的其它反应,包括其它催化或化学反应等。 反应曲线可以是线性的或非线性的,例如二阶,三阶等
    • 4. 发明申请
    • MICROFLUIDIC PRECONDITIONING OF (BIO) FLUIDS FOR REAGENT-FREE INFRARED CLINICAL ANALYSIS AND DIAGNOSTICS
    • 用于无菌红细胞临床分析和诊断的(生物)流体的微流体预处理
    • WO2005108958A1
    • 2005-11-17
    • PCT/CA2005/000687
    • 2005-05-05
    • NATIONAL RESEARCH COUNCIL OF CANADAMANSFIELD, ColinSHAW, Anthony
    • MANSFIELD, ColinSHAW, Anthony
    • G01N21/35
    • G01N21/35G01N21/03G01N2001/4016G01N2001/4072
    • A number of reagent-free infrared spectroscopic diagnostic and analytical methods have been established previously, making use of dry biofluid films. For example, this approach has successfully measured high concentration analytes of serum and urine. However, a number of low concentration diagnostically relevant analytes presently elude detection by infrared spectroscopy. 'This is due in part to their relatively low concentration and in part to spectral interference by other strongly absorbing constituents. The applicability of the technique would be broadened substantially if it were possible to separate and concentrate, lower concentration analytes, e.g. serum creatinine and urine proteins, from the obscuring presence of relatively high concentration compounds. The invention disclosed achieves this is through microfluidic sample preconditioning based upon laminar fluid diffusion interfaces. Preferential separation of certain low concentration serum and urine analytes of clinical interest that presently lie just below the threshold of detection by infrared spectroscopy is provided.
    • 以前已经建立了许多无试剂的红外光谱诊断和分析方法,利用干燥的生物流体膜。 例如,这种方法已成功测量血清和尿液的高浓度分析物。 然而,许多低浓度诊断相关分析物目前无法通过红外光谱检测。 “这部分归因于它们的相对较低的浓度,部分是由于其他强吸收成分的光谱干扰。 如果可以分离和浓缩,降低浓度的分析物,例如,可以将该技术的适用性显着扩大。 血清肌酐和尿蛋白,来自相对高浓度化合物的模糊存在。 所公开的发明通过基于层流扩散界面的微流体样品预处理实现了这一点。 提供目前正在低于红外光谱检测阈值的临床兴趣的某些低浓度血清和尿液分析物的优先分离。
    • 5. 发明申请
    • SEPARATION AND ANALYSIS SYSTEMS AND METHODS
    • 分离与分析系统与方法
    • WO2014195662A1
    • 2014-12-11
    • PCT/GB2013/052891
    • 2013-11-05
    • BLACKTRACE HOLDINGS LIMITED
    • KOULMAN, Albert
    • B01D11/04G01N33/34G01N1/42G01N33/40G01N33/68
    • G01N30/34B01D11/04B01L3/502738B01L3/502784B01L2200/0631B01L2200/0673B01L2300/0816B01L2400/0487B01L2400/0622B01L2400/0638G01N30/7233G01N35/08G01N2001/4072H01J49/165
    • Disclosed is an extraction and analysis system and method. The system comprises a separation apparatus, a liquid-liquid extraction apparatus and an analysis apparatus. The liquid-liquid extraction apparatus is configured to receive a substantially continuous inlet flow of a first liquid from the separation apparatus, the first liquid carrying a mixture of components including an analyte. The liquid-liquid extraction apparatus is operable to receive a second liquid for contact with the first liquid, the second liquid being substantially immiscible with the first liquid. This provides partitioning of the analyte and/or another component carried by the first liquid preferentially into the second liquid substantially continuously. Subsequently the first and second liquids are separated substantially continuously. The system further comprises an outlet flow conduit operable substantially continuously to conduct the analyte, in a corresponding flow of said first or second liquid, to the analysis apparatus for substantially continuous analysis.
    • 公开了一种提取和分析系统及方法。 该系统包括分离装置,液 - 液萃取装置和分析装置。 液体 - 液体提取装置被配置为接收来自分离装置的第一液体的基本上连续的入口流,第一液体承载包括分析物的组分的混合物。 液体 - 液体提取装置可操作以接收与第一液体接触的第二液体,第二液体与第一液体基本上不混溶。 这提供了基本上连续地将分析物和/或由第一液体承载的另一组分优先分配到第二液体中。 随后第一和第二液体基本连续分离。 该系统还包括一个输出流管道,其可操作性地连续地将分析物在所述第一或第二液体的相应流中传导至分析装置,用于基本上连续的分析。