Patent application number | Description | Published |
20090065368 | APPARATUS AND METHODS FOR ANALYTE MEASUREMENT AND IMMUNOASSAY - The present invention relates to an apparatus for conducting a variety of assays for the determination of analytes in liquid samples, and relates to the methods for such assays. In particular, the invention relates to a single-use cartridge designed to be adaptable to a variety of real-time assay protocols, preferably assays for the determination of analytes in biological samples using immunosensors or other ligand/ligand receptor-based biosensor embodiments. The cartridge provides novel features for processing a metered portion of a sample, for precise and flexible control of the movement of a sample or second fluid within the cartridge, for the amending of solutions with additional compounds during an assay, and for the construction of immunosensors capable of adaptation to diverse analyte measurements. The disclosed device and methods of use enjoy substantial benefits over the prior art, including simplicity of use by an operator, rapid in situ determinations of one or more analytes, and single-use methodology that minimizes the risk of contamination of both operator and patient. The disclosed invention is adaptable to the point-of-care clinical diagnostic field, including use in accident sites, emergency rooms, surgery, nursing homes, intensive care units, and non-medical environments. | 03-12-2009 |
20100061890 | IMMUNOASSAY DEVICE WITH IMPROVED SAMPLE CLOSURE - An apparatus and method for sealing a fluid sample collection device, comprising loading a fluid sample collection device with a fluid sample, said device comprising a housing having at least one substantially planar surface that includes an orifice in fluid communication with an internal fluid sample holding chamber which terminates at an internal capillary stop; and slidably moving a sealing element over at least a portion of said substantially planar surface in a way that displaces any excess fluid sample away from the orifice, seals the fluid sample within said holding chamber, and inhibits the fluid sample from prematurely breaking through the internal capillary stop. | 03-11-2010 |
20100167301 | METHOD AND DEVICE FOR IMMUNOASSAY USING NUCLEOTIDE CONJUGATES - A composition of matter for use in an immunoassay devices and method comprising a signal antibody, e.g., FAB fragment, covalently linked to a first nucleotide; and one or more signal elements, e.g., signal enzymes such as ALP or fluorescent dyes, each covalently linked to a second nucleotide, wherein the first nucleotide has one or more repeated sequences, and the second nucleotide is bound to one of the one or more repeated sequences on said first nucleotide, and wherein the ratio of the signal antibody to the signal element is controlled by the number of repeated sequences. | 07-01-2010 |
20100167308 | METHOD FOR MEASURING AN ANALYTE IN BLOOD - An electrochemical immunosensor system with reduced interference, comprising: a first immunosensor that generates an electrochemical signal based on the formation of a sandwich between an immobilized antibody, a target analyte and a labeled antibody, wherein a portion of the signal arises from non-specific binding of the labeled antibody in the region of the first immunosensor, and
| 07-01-2010 |
20100167312 | METHOD FOR ASSAYING A TARGET ANALYTE WHILE REDUCING INTERFERENCE IN AN IMMUNOSENSOR SYSTEM - An electrochemical immunosensor system with reduced interference, comprising: a first immunosensor that generates an electrochemical signal based on the formation of a sandwich between an immobilized antibody, a target analyte and a labeled antibody, wherein a portion of the signal arises from non-specific binding of the labeled antibody in the region of the first immunosensor, and
| 07-01-2010 |
20100167386 | IMMUNOSENSOR SYSTEM FOR BLOOD WITH REDUCED INTERFERENCE - An electrochemical immunosensor system with reduced interference, comprising: a first immunosensor that generates an electrochemical signal based on the formation of a sandwich between an immobilized antibody, a target analyte and a labeled antibody, wherein a portion of the signal arises from non-specific binding of the labeled antibody in the region of the first immunosensor, and
| 07-01-2010 |
20100173396 | AMPEROMETRIC IMMUNOSENSOR - An electrochemical immunosensor system with reduced interference, comprising: a first immunosensor that generates an electrochemical signal based on the formation of a sandwich between an immobilized antibody, a target analyte and a labeled antibody, wherein a portion of the signal arises from non-specific binding of the labeled antibody in the region of the first immunosensor, and
| 07-08-2010 |
20100203550 | METHOD OF PERFORMING AN IMMUNOASSAY IN BLOOD - An electrochemical immunosensor system with reduced interference, comprising: a first immunosensor that generates an electrochemical signal based on the formation of a sandwich between an immobilized antibody, a target analyte and a labeled antibody, wherein a portion of the signal arises from non-specific binding of the labeled antibody in the region of the first immunosensor, and
| 08-12-2010 |
20100291666 | Molecular diagnostics system and methods - The present invention relates to automated devices and methods for the extraction of nucleic acids from cells, the amplification of segments of nucleic acid and the detection of nucleic acids, all in a convenient and portable manner. The invention is particularly suited for use in point-of-care medical diagnostic testing. | 11-18-2010 |
20100297708 | MOLECULAR DIAGNOSTICS SYSTEM AND METHODS - The present invention relates to automated devices and methods for the extraction of nucleic acids from cells, the amplification of segments of nucleic acid and the detection of nucleic acids, all in a convenient and portable manner. The invention is particularly suited for use in point-of-care medical diagnostics testing. | 11-25-2010 |
20100330575 | MOLECULAR DIAGNOSTICS REAGENTS AND METHODS - The present invention relates to automated devices and methods for the extraction of nucleic acids from cells, the amplification of segments of nucleic acid and the detection of nucleic acids, all in a convenient and portable manner. The invention is particularly suited for use in point-of-care medical diagnostics testing. | 12-30-2010 |
20110269153 | Immunoassay Device with Improved Sample Closure - An apparatus and method for sealing a fluid sample collection device, comprising: loading a fluid sample collection device with a fluid sample, said device comprising a housing having at least one substantially planar surface that includes an orifice in fluid communication with an internal fluid sample holding chamber which terminates at an internal capillary stop; and slidably moving a sealing element over at least a portion of said substantially planar surface in a way that displaces any excess fluid sample away from the orifice, seals the fluid sample within said holding chamber, and inhibits the fluid sample from prematurely breaking through the internal capillary stop. | 11-03-2011 |
20110269222 | Immunoassay Device with Improved Sample Closure - An apparatus and method for sealing a fluid sample collection device, comprising: loading a fluid sample collection device with a fluid sample, said device comprising a housing having at least one substantially planar surface that includes an orifice in fluid communication with an internal fluid sample holding chamber which terminates at an internal capillary stop; and slidably moving a sealing element over at least a portion of said substantially planar surface in a way that displaces any excess fluid sample away from the orifice, seals the fluid sample within said holding chamber, and inhibits the fluid sample from prematurely breaking through the internal capillary stop. | 11-03-2011 |
20110290669 | Apparatus and Methods for Analyte Measurement and Immunoassay - The present invention relates to an apparatus for conducting a variety of assays for the determination of analytes in liquid samples, and relates to the methods for such assays. In particular, the invention relates to a single-use cartridge designed to be adaptable to a variety of real-time assay protocols, preferably assays for the determination of analytes in biological samples using immunosensors or other ligand/ligand receptor-based biosensor embodiments. The cartridge provides novel features for processing a metered portion of a sample, for precise and flexible control of the movement of a sample or second fluid within the cartridge, for the amending of solutions with additional compounds during an assay, and for the construction of immunosensors capable of adaptation to diverse analyte measurements. The disclosed device and methods of use enjoy substantial benefits over the prior art, including simplicity of use by an operator, rapid in situ determinations of one or more analytes, and single-use methodology that minimizes the risk of contamination of both operator and patient. The disclosed invention is adaptable to the point-of-care clinical diagnostic field, including use in accident sites, emergency rooms, surgery, nursing homes, intensive care units, and non-medical environments. | 12-01-2011 |
20120031773 | IMMUNOASSAY METHOD AND DEVICE WITH MAGNETICALLY SUSCEPTIBLE BEAD CAPTURE - The present invention provides apparatus and methods for the rapid determination of analytes in liquid samples by immunoassays incorporating magnetic capture of beads on a sensor capable of being used in the point-of-care diagnostic field. | 02-09-2012 |
20120034624 | OSCILLATING IMMUNOASSAY METHOD AND DEVICE - The present invention provides apparatus and methods for the rapid determination of analytes in liquid samples by immunoassays incorporating magnetic capture of beads on a sensor capable of being used in the point-of-care diagnostic field. | 02-09-2012 |
20120034633 | MAGNETIC IMMUNOSENSOR AND METHOD OF USE - The present invention provides apparatus and methods for the rapid determination of analytes in liquid samples by immunoassays incorporating magnetic capture of beads on a sensor capable of being used in the point-of-care diagnostic field. | 02-09-2012 |
20120034684 | MAGNETIC IMMUNOSENSOR WITH TRENCH CONFIGURATION AND METHOD OF USE - The present invention provides apparatus and methods for the rapid determination of analytes in liquid samples by immunoassays incorporating magnetic capture of beads on a sensor capable of being used in the point-of-care diagnostic field. | 02-09-2012 |
20120142019 | Sample Metering Device and Assay Device with Integrated Sample Dilution - In one embodiment, the invention is to a sample metering device, comprising a sample holding chamber oriented between a sample entry port and a sample isolation unit and having a diluent introduction port disposed therebetween for introduction of a diluent into the sample holding chamber. The volume within the sample holding chamber between the diluent introduction port and the sample isolation unit defines a metered volume of a sample for analysis. In another embodiment, the invention is to an apparatus and method for rapid determination of analytes in liquid samples by various assays including immunoassays incorporating a sample dilution feature, preferably suitable for low range sample dilution, and preferably capable of being used in the point-of-care diagnostic field. | 06-07-2012 |
20120142020 | Sample Metering Device and Assay Device with Integrated Sample Dilution - In one embodiment, the invention is to a sample metering device, comprising a sample holding chamber oriented between a sample entry port and a sample extraction unit, wherein a portion of said extraction unit defines a metered volume of a sample. A diluent may be transported over and/or through the extraction unit to form a diluted sample for sample analysis. In another embodiment, the invention is to an apparatus and method for rapid determination of analytes in liquid samples by various assays including immunoassays incorporating a sample dilution feature, capable of being used in the point-of-care diagnostic field is provided. The devices and methods of the invention preferably are well-suited for high range sample dilution. | 06-07-2012 |
20120142025 | Ratiometric Immunoassay Method and Blood Testing Device - The invention is to devices and methods for rapid determination of analytes in liquid samples. The devices and methods incorporate a sample dilution feature and multiple immunosensors for performing a ratiometric immunoassay on a first analyte and a second analyte, for example, hemoglobin and hemoglobin A1c or albumin and glycosylated albumin. The devices are preferably capable of being used in the point-of-care diagnostic field. | 06-07-2012 |
20120142026 | Assay Devices with Integrated Sample Dilution and Dilution Verification and Methods of Using Same - The invention is to devices and method for rapid determination of analytes in liquid samples by various assays including immunoassays incorporating a sample dilution feature for forming a diluted sample for analysis. The devices and methods also include a dilution verification feature for verifying the degree of dilution of the diluted sample. The devices preferably are capable of being used in the point-of-care diagnostic field is provided. | 06-07-2012 |
20120167672 | Multi-Fluidic Cartridges for Sample Analysis and Methods for Using Same - The invention is directed to multi-fluidic cartridges for sample analysis and to methods of using said cartridges. In one embodiment, the cartridge comprises: (a) a first conduit beginning at a sample entry port for receiving a fluid sample and in fluid communication with one or more sensors; (b) a plurality of rupturable fluidic pouches, each containing a different fluid and in fluid communication with a respective delivery conduit configured for delivering a respective fluid to said first conduit; and (c) at least one pneumatic pump configured to move said fluid sample to said one or more sensors and for transporting at least one of said different fluids to said first conduit. | 07-05-2012 |
20120252032 | Immunoassay Device with Improved Sample Closure - An apparatus and method for sealing a fluid sample collection device, comprising loading a fluid sample collection device with a fluid sample, said device comprising a housing having at least one substantially planar surface that includes an orifice in fluid communication with an internal fluid sample holding chamber which terminates at an internal capillary stop; and slidably moving a sealing element over at least a portion of said substantially planar surface in a way that displaces any excess fluid sample away from the orifice, seals the fluid sample within said holding chamber, and inhibits the fluid sample from prematurely breaking through the internal capillary stop. | 10-04-2012 |
20120305409 | Apparatus and Methods for Analyte Measurement and Immunoassay - The present invention relates to methods for measuring an amount of an analyte using an electrochemical assay in a conduit comprising a sensor, wherein said sensor comprises an electrode having a surface layer of immobilized antibody that binds said analyte, and a counter/reference electrode disposed within said conduit. A solution comprising a substrate for said enzyme and at least one air segment contacts the sensor to remove unbound analyte and labeled antibody from a region of the sensor. The disclosed invention is adaptable to the point-of-care clinical diagnostic field, including use in accident sites, emergency rooms, surgery, nursing homes, intensive care units, and non-medical environments. | 12-06-2012 |
20120315647 | Immunoassay Reagent Composition - An apparatus and method for sealing a fluid sample collection device, comprising loading a fluid sample collection device with a fluid sample, said device comprising a housing having at least one substantially planar surface that includes an orifice in fluid communication with an internal fluid sample holding chamber which terminates at an internal capillary stop; and slidably moving a sealing element over at least a portion of said substantially planar surface in a way that displaces any excess fluid sample away from the orifice, seals the fluid sample within said holding chamber, and inhibits the fluid sample from prematurely breaking through the internal capillary stop. | 12-13-2012 |
20130224775 | Apparatus and Methods for Analyte Measurement Immunoassay - The present invention relates to methods for measuring an amount of an analyte using an electrochemical assay in a conduit comprising a sensor, wherein said sensor comprises an electrode having a surface layer of immobilized antibody that binds said analyte, and a counter/reference electrode disposed within said conduit. A solution comprising a substrate for said enzyme and at least one air segment contacts the sensor to remove unbound analyte and labeled antibody from a region of the sensor. The disclosed invention is adaptable to the point-of-care clinical diagnostic field, including use in accident sites, emergency rooms, surgery, nursing homes, intensive care units, and non-medical environments. | 08-29-2013 |
20130230854 | Method and Device for Immunoassay Using Nucleotide Conjugates - A composition of matter for use in an immunoassay devices and method comprising a signal antibody, e.g., FAB fragment, covalently linked to a first nucleotide; and one or more signal elements, e.g., signal enzymes such as ALP or fluorescent dyes, each covalently linked to a second nucleotide, wherein the first nucleotide has one or more repeated sequences, and the second nucleotide is bound to one of the one or more repeated sequences on said first nucleotide, and wherein the ratio of the signal antibody to the signal element is controlled by the number of repeated sequences. | 09-05-2013 |
20140141484 | Multiple Hybrid Immunoassay - The invention relates to compositions and methods for the immunoassay of an analyte of interest. The analyte is detected in an immunoassay using three or more antibodies, wherein each antibody specifically binds to a different epitope on the analyte. When the analyte of interest in a clinical marker for an acute disease, the detection of the analyte by immunoassay is a diagnosis of the occurrence of the disease. | 05-22-2014 |
20140370583 | Multi-Fluidic Cartridges for Sample Analysis and Methods for Using Same - The invention is directed to multi-fluidic cartridges for sample analysis and to methods of using said cartridges. In one embodiment, the cartridge comprises: (a) a first conduit beginning at a sample entry port for receiving a fluid sample and in fluid communication with one or more sensors; (b) a plurality of rupturable fluidic pouches, each containing a different fluid and in fluid communication with a respective delivery conduit configured for delivering a respective fluid to said first conduit; and (c) at least one pneumatic pump configured to move said fluid sample to said one or more sensors and for transporting at least one of said different fluids to said first conduit. | 12-18-2014 |
20150064707 | Molecular Diagnostics System and Methods - The present invention relates to methods for the extraction of nucleic acids from cells, the amplification of segments of nucleic acid and the detection of nucleic acids, all in a convenient and portable manner. In one embodiment, a sample comprising cells containing nucleic acid is exposed to an aqueous mixture comprising a lytic reagent and one or more beads capable of binding the nucleic acid released from said cells to form a nucleic acid-bead complex. The nucleic acid-bead complex is passed through an immiscible liquid layer to separate the nucleic acid from the aqueous mixture. The one or more beads are magnetic, and the nucleic acid-bead complex is passed through and separated from the immiscible liquid layer with an applied magnetic field. The invention is particularly suited for use in point-of-care medical diagnostics testing. | 03-05-2015 |