Patent application number | Description | Published |
20080233594 | Method For Detecting An At Least Bivalent Analyte Using Two Affinity Reactants - A method for the determination of an analyte which is a) present in a liquid sample 1 suspected of containing the analyte, and b) at least bivalent with respect to simultaneous affinity binding of at least two binding structures BSs. The method comprises formation of an affinity complex that comprises the analyte and an affinity reactant 1 that is immobilized to a solid phase. The method comprises the steps of: (i) providing a microfluidic flow path that comprises a reaction cavity containing a solid phase to which affinity reactant 1 is immobilized, (ii) providing sample 1 upstream of the cavity and flowing it through the cavity for the formation of the affinity complex under flow conditions, (iii) measuring the amount of complex formed in the solid phase by a) incorporating an analytically detectable and soluble affinity reactant 2 that comprises a binding structure BS into the complex subsequent to step (ii), and b) measuring the amount of affinity reactant 2 incorporated. | 09-25-2008 |
20080280378 | Grading of Immune Responses - The invention is a method for grading a polyclonal antibody response with respect to a desired 5 binding specificity. The response is provoked by an antigenic agent in a host, preferably a vertebrate host. The characteristic feature of the method comprises the steps of: (i) providing a reaction microcavity having an inlet end and an outlet end and containing a solid phase that exposes an immobilized binding structure (BS) that are capable of affinity binding antibodies (Ab) of the response, (ii) flowing a liquid sample containing antibodies of the response in the direction from the inlet end to the outlet end through the solid phase, (iii) determining the distribution of antibodies, which are captured during step (ii), along the flow direction of the solid phase, and (iv) grading the response based on the distribution determined in step (iii). | 11-13-2008 |
20090010819 | VERSATILE FLOW PATH - A flow path comprising a reaction cavity in which there is a solid phase to which an affinity reactant I1 has been immobilized by the use of an immobilizing pair of reactive structures that comprises a) a plurality of functional equal structures RSsp on the solid phase, and b) a structure RSari on affinity reactant I1, where RSsp and RSari are mutually reactive with each other to the formation of a link structure that immobilizes affinity reactant I1 to the solid phase. The characteristic feature is that the solid phase comprises a plurality of structures that derive from RSsp but do not immobilize affinity reactant I1 to the solid phase. | 01-08-2009 |
20090215196 | Sequential Method - A method for determination of an analyte in an original liquid sample by performing an inhibition affinity assay in a microchannel structure of a microfluidic device. The main characteristic feature is the steps of: (i) providing the microfluidic device in a form where the microchannel structure comprises a reaction microcavity which a) an inlet end, and b) contains a solid phase with binding sites (BS) for an analyte or an analyte-related entity, (ii) providing a liquid sample (1) containing the analyte or the analyte-related entity within the microchannel structure at the inlet end of the reaction microcavity, and flowing sample (1) through the reaction microcavity under conditions such that the analyte or the analyte-related entity is captured by BS leaving a portion of BS unoccupied (free BS), (iii) providing a liquid sample (2) which contains an analytically detectable analogue of the analyte or of the analyte-related entity, and flowing sample (2) through said reaction microcavity to capture the analogue by free BS, and (iv) measuring the amount of analyte analogue captured in step (iii) and relating this amount to the amount of analyte in an original sample. | 08-27-2009 |
20100151594 | COLLECTION OF MICRO SCALE DEVICES - A collection of one or more microfluidic devices which together carry a plurality of microchannel structures each of which comprises a reaction microcavity ( | 06-17-2010 |
20110033953 | CHARACTERIZATION OF REACTION VARIABLES - A microscale method for the characterization of one or more reaction variables that influence the formation or dissociation of an affinity complex comprising a ligand and a binder, which have mutual affinity for each other. The method is characterized in comprising the steps of: (i) providing a microfluidic device comprising a microchannel structures that are under a common flow control, each microchannel structure comprising a reaction microactivity; (ii) performing essentially in parallel an experiment in each of two or more of the plurality of microchannel structures, the experiment in these two or more microchannel structures comprising either a) formation of an immobilized form of the complex and retaining under flow conditions said form within the reaction microactivity, or b) dissociating, preferably under flow condition, an immobilized form of the complex which has been included in the microfluidic device provided in step (i), at least one reaction variable varies or is uncharacterized for said two or more microchannel structures while the remaining reaction variables are kept essentially constant; (iii) measuring the presentation of the complex in said reaction microactivity in said two or more microchannel structures; and (iv) characterizing said one or more reaction variables based on the values for presentation obtained in step (iii). | 02-10-2011 |
20110071050 | COLLECTION OF MICRO SCALE DEVICES - A collection of one or more microfluidic devices which together carry a plurality of microchannel structures each of which comprises a reaction microcavity in which there is a solid phase with an immobilized affinity ligand L, characterized in that (i) the plurality is divided into sets of microchannel structures, and (ii) the affinity ligand L is directed to the same counterpart (binder, B) independent of set, and (iii) the sets differ in a) the capacity per reaction microcavity and/or the capacity/unit volume of the solid phase in a reaction microcavity for binder B, and/or b) the base matrix of the solid phase between the sets but are equal within each set. | 03-24-2011 |
20110091904 | METHOD FOR DETERMINATION OF AFFINITY AND KINETIC CONSTANTS - The invention is related to a method for quantification of a first dissociation equilibrium constant K | 04-21-2011 |
20110131830 | PRELOADED MICROFLUIDIC DEVICES - A microfluidic device comprising one, two or more microchannel structures ( | 06-09-2011 |
20110195524 | SEMI-SEQUENTIAL ASSAY FOR DETECTION OF AN ANALYTE IN A SAMPLE - The invention is related to a method for detection of an analyte in a sample, wherein the method is a semi-sequential assay procedure. | 08-11-2011 |
20140199783 | CHARACTERIZATION OF REACTION VARIABLES - A microscale method for the characterization of one or more reaction variables that influence the formation or dissociation of an affinity complex comprising a ligand and a binder, which have mutual affinity for each other. The method is characterized in comprising the steps of: (i) providing a microfluidic device comprising a microchannel structures that are under a common flow control, each microchannel structure comprising a reaction microactivity; (ii) performing essentially in parallel an experiment in each of two or more of the plurality of microchannel structures, the experiment in these two or more microchannel structures comprising either a) formation of an immobilized form of the complex and retaining under flow conditions said form within the reaction microactivity, or b) dissociating, preferably under flow condition, an immobilized form of the complex which has been included in the microfluidic device provided in step (i), at least one reaction variable varies or is uncharacterized for said two or more microchannel structures while the remaining reaction variables are kept essentially constant; (iii) measuring the presentation of the complex in said reaction microactivity in said two or more microchannel structures; and (iv) characterizing said one or more reaction variables based on the values for presentation obtained in step (iii). | 07-17-2014 |