| 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 |
| 20090204513 | POINT-OF-CARE INVENTORY MANAGEMENT SYSTEM AND METHOD - A system and method are disclosed for controlling an inventory of point-of-care diagnostic devices. The inventory includes a main inventory and at least one subinventory. Each device has an ambient temperature shelf life. Data associated with the devices is entered, including: the current quantity and predetermined minimum quantity of devices in the main inventory; and the current quantity and predetermined minimum quantity of devices in the subinventory. A first timestamp is associated with each device when the device is transferred from the main inventory to the ambient temperature subinventory. The first timestamp is compared to a second timestamp prior to use of the device to determine whether the device's ambient temperature shelf life is exceeded. The current quantity of devices in the subinventory is updated in response to an event that causes a change in the current quantity of devices in the subinventory. | 08-13-2009 |
| 20110117580 | REDUCING LEUKOCYTE INTERFERENCE IN NON-COMPETITIVE IMMUNOASSAYS - The invention is directed to methods and devices for reducing interference from leukocytes in an analyte immunoassay, and in particular in non-competitive immunoassays. In one embodiment, the invention is to a method comprising the steps of (a) amending a biological sample such as a whole blood sample with sacrificial beads; and (b) performing a non-competitive immunoassay on the amended sample to determine the concentration of said analyte in said sample. Preferably, the sample is amended with IgG-coated sacrificial beads. | 05-19-2011 |
| 20110117581 | REDUCING LEUKOCYTE INTERFERENCE IN COMPETITIVE IMMUNOASSAYS - The invention is directed to methods and devices for reducing interference from leukocytes in an competitive analyte immunoassays. In one embodiment, the invention is to a method comprising the steps of (a) amending a biological sample such as a whole blood sample with sacrificial beads opsonized for leukocytes; and (b) performing a competitive immunoassay on the amended sample to determine the concentration of said analyte in said sample. Preferably, the sample is amended with IgG-coated sacrificial beads. | 05-19-2011 |
| 20110166427 | Point-of-Care Inventory Management System and Method - A system and method are disclosed for controlling an inventory of point-of-care diagnostic devices. The inventory includes a main inventory and at least one subinventory. Each device has an ambient temperature shelf life. Data associated with the devices is entered, including: the current quantity and predetermined minimum quantity of devices in the main inventory; and the current quantity and predetermined minimum quantity of devices in the subinventory. A first timestamp is associated with each device when the device is transferred from the main inventory to the ambient temperature subinventory. The first timestamp is compared to a second timestamp prior to use of the device to determine whether the device's ambient temperature shelf life is exceeded. The current quantity of devices in the subinventory is updated in response to an event that causes a change in the current quantity of devices in the subinventory. | 07-07-2011 |
| 20110256573 | METHOD AND APPARATUS FOR DETERMINING AT LEAST ONE HEMOGLOBIN RELATED PARAMETER OF A WHOLE BLOOD SAMPLE - A method and apparatus for determining at least one hemoglobin related parameter of a whole blood sample is provided. The method includes the steps of: a) depositing the sample into an analysis chamber adapted to quiescently hold the sample for analysis, the chamber defined by an interior surface of a first panel, and an interior surface of a second panel, and the chamber has a height extending between the interior surfaces of the panels, wherein the chamber is configured to increase the oxygenation state of the sample to a substantially oxygenated state within a predetermined amount of time after entry into the chamber; b) imaging the at least one red blood cell contacting the interior surfaces, and producing image signals; c) determining an optical density of at least a portion of the imaged red blood cell contacting both interior surfaces; and d) determining the at least one hemoglobin related parameter of the red blood cell contacting the interior surfaces, using the determined optical density and a molar extinction coefficient for oxygenated hemoglobin. | 10-20-2011 |
| 20110269159 | REAGENTS FOR REDUCING LEUKOCYTE INTERFERENCE IN IMMUNOASSAYS - Methods and devices for reducing interference from leukocytes in an analyte immunoassay are provided. In one embodiment, a method is provided comprising the steps of amending a biological sample such as a whole blood sample with one or more leukocidal reagents that reduce or eliminate the metabolic activity of leukocytes, and performing an immunoassay on the amended sample to determine the concentration of analyte in the sample. Preferably, the sample is amended with one or more enzymes and optionally one or more enzyme substrates and cofactors. | 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 |
