Including Bibulous Or Absorbent Layer Patents (Class 435/287.7)
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Patent number: 12196749Abstract: Assay modules, preferably assay cartridges, are described as are reader apparatuses which may be used to control aspects of module operation. The modules preferably comprise a detection chamber with integrated electrodes that may be used for carrying out electrode induced luminescence measurements. Methods are described for immobilizing assay reagents in a controlled fashion on these electrodes and other surfaces. Assay modules and cartridges are also described that have a detection chamber, preferably having integrated electrodes, and other fluidic components which may include sample chambers, waste chambers, conduits, vents, bubble traps, reagent chambers, dry reagent pill zones and the like. In certain preferred embodiments, these modules are adapted to receive and analyze a sample collected on an applicator stick.Type: GrantFiled: July 29, 2020Date of Patent: January 14, 2025Assignee: MESO SCALE TECHNOLOGIES, LLC.Inventors: Eli N. Glezer, Jonathan K. Leland, Mark A. Billadeau, Joseph M. Leginus, Bandele Jeffrey-Coker, Jeff D. Debad, Koustubh A. Phalnikar, Sriram Jambunathan
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Patent number: 12151238Abstract: Disclosed is a sensor assembly including a flow channel; two or more working electrodes located in the flow channel; and one or more reference electrodes located in the flow channel, wherein a total number of working electrodes is greater than a total number of reference electrodes. Volume in the flow channel may be minimized Liquid testing apparatus and methods of testing test liquids are provided, as are other aspects.Type: GrantFiled: April 9, 2020Date of Patent: November 26, 2024Assignee: Siemens Healthcare Diagnostics Inc.Inventor: Jennifer Samproni
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Patent number: 12134762Abstract: The present disclosure comprises a lymphovascular bioreactor system and methods of making and using same.Type: GrantFiled: November 9, 2018Date of Patent: November 5, 2024Assignee: Duke UniversityInventors: David Brown, Gayathri Devi
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Method of creating an optical atom trap and atom trap apparatus, employing an incoherent light field
Patent number: 12131834Abstract: A method of creating an optical atom trap comprises the steps of providing an incoherent light field with a light source apparatus, by creating a pulsed laser light beam of laser pulses with a repetition rate equal to or above 100 kHz and a relative spectral width of 10?4 to 10?2, coupling the pulsed laser light beam to an input end of a multimode waveguide device and guiding the pulsed laser light beam by total internal reflection to an output end of the multimode waveguide device, wherein the incoherent light field is provided at the output end, and creating the optical atom trap for trapping atoms in an atom trap chamber device by coupling the incoherent light field to the atom trap chamber device, wherein the optical atom trap has a trap frequency and the atoms have multiple resonance frequencies, and the laser pulses for providing the incoherent light field are created such that the repetition rate is above the trap frequency and the spectral width is below a spectral range between the resonance frequencType: GrantFiled: September 10, 2020Date of Patent: October 29, 2024Assignee: Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e. V.Inventors: Dawei David Wei, Christian Gross, Immanuel Bloch -
Patent number: 12105083Abstract: The present disclosure relates to a method for detection of an antibody or antibody fragment in a biological sample from a subject. In some embodiments, the methods comprise immobilizing a first binding agent on a surface plasmon resonance (SPR) biosensor; adding a ligand that binds to the first binding agent under conditions such that a complex of the ligand and the first binding agent is formed; adding an aliquot of the biological sample under conditions such that the antibody and/or antibody fragment binds to the ligand that is complexed to the first binding agent; and detecting the presence of the antibody and/or antibody fragment as a change in signal obtained from SPR. In some embodiments, the antibody is an antibody therapeutic such as certolizumab pegol. Also disclosed are systems and kits for detecting an antibody in a biological sample from a subject using SPR.Type: GrantFiled: April 16, 2020Date of Patent: October 1, 2024Assignee: Laboratory Corporation of America HoldingsInventors: Mary Katherine Morr Kelemen, Brett Holmquist
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Patent number: 12085560Abstract: Provided is a biochemical reaction substrate which can achieve higher test sensitivity and shorter testing time in an allergy test, which can also reduce a required amount of blood or the like needed as a specimen and decrease the number of test steps, thereby facilitating performance of the test, and which is to be used in an allergy test in which infection risk of the test staff is reduced.Type: GrantFiled: February 1, 2019Date of Patent: September 10, 2024Assignee: NIPPON CHEMIPHAR CO., LTD.Inventors: Kenji Uemura, Norio Tanimoto, Mai Egami, Takahiro Mataki, Yumi Konishi, Motoe Shimizu, Shigenori Takahashi, Koji Sakaguchi
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Patent number: 12056719Abstract: Methods are provided for producing an authenticated packaged product. A digital signature, dependent on unique message data for the product, is generated via a digital signature scheme using a secret signing key. The message data is provided on at least one of the product and packaging. The digital signature is provided on the other of the product and packaging, and the product is packed in the packaging. The digital signature can be generated via a fuzzy-message digital signature scheme having a verification algorithm for verifying the digital signature in relation to fuzzy data within a predetermined difference measure of the message data. Methods and systems for authenticating such packaged products are also provided.Type: GrantFiled: April 4, 2022Date of Patent: August 6, 2024Assignee: International Business Machines CorporationInventors: Jan L. Camenisch, Emmanuel Delamarche, Eduarda Freire-Stögbuchner, Onur Goekce
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Patent number: 12031994Abstract: An automated pre-analytical processing method and an apparatus for pre-analytical processing of samples to be forwarded to an adjacent analyzer for analysis. Rack label information is read and communicated to a processor. From the rack label information, the processor determines where to route the rack. The pre-analytical system has a rack robot that conveys racks to discrete locations depending upon the routing information assigned to the rack by the processor. The pre-analytical system has an automated station that reads the labels of individual sample containers in the rack that are brought to the automated station on instructions from the processor. Depending on the type of sample container and the type of sample disposed therein, the samples are either prepared for analysis by the automated station or the sample containers are directly passed through the automated station. Prepared samples and passed through samples are passed individually to a batching rack.Type: GrantFiled: October 18, 2021Date of Patent: July 9, 2024Assignee: BECTON DICKINSON AND COMPANYInventors: Michael T. VanSickler, Kevin Bailey, Christopher John Tesluk, Dwight Livingston, Steven C. Rotundo, Stephen Robert LaChance, Michael J. Touma, Brian James McKeen, Gerard Sevigny
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Patent number: 11980884Abstract: The present invention discloses a detection apparatus, comprising a base layer, wherein the base layer comprises a groove for containing a testing element and a sample chamber for collecting a fluid sample. The detection apparatus can achieve fast, efficient and accurate detection of analytes in liquid samples, make operators to perform testing conveniently and freely, without causing incorrect results. In some preferred modes, the sample chamber comprises a liquid channel.Type: GrantFiled: December 1, 2021Date of Patent: May 14, 2024Assignee: HANGZHOU BIOTEST BIOTECH CO., LTD.Inventors: Shujiang Wu, John Wu, Yangyu Zhu, Lorraine C. Cogan, Liang Hong
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Patent number: 11874256Abstract: The present disclosure is directed to methods for evaluating system inertness, such as the inertness of a LC or other fluidic system. Some methods are directed to tests wherein the column has been removed prior to injecting a sample including a positive (e.g., metal reacting moiety) control into the system. Some methods can include: (1) repeatedly injecting the sample into a system, the system comprising: fluidic paths wherein interior surfaces of the fluidic paths define wetted surfaces, and wherein at least a portion of the wetted surfaces of the fluidic flow path are coated with an inert coating, wherein the inert coating is inert to at least one analyte in the sample; (2) detecting a value associated with the positive control; and (3) analyzing values associated with the detected positive control to determine system inertness.Type: GrantFiled: September 10, 2021Date of Patent: January 16, 2024Assignee: Waters Technologies CorporationInventors: Amit Patel, Moon Chul Jung, Thomas H. Walter, Matthew A. Lauber, Kevin Wyndham, Mathew DeLano, Jennifer Simeone
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Patent number: 11738339Abstract: Provided are methods and devices for automated analysis of one or more samples in single or multi-well plates or vessels, wherein the process of automated analysis comprises flow and hydrodynamic, electrokinetic, and optical forces for the analysis and sorting of samples, wherein the samples comprise liquid or particles in microfluidic channels, and wherein the devices comprise an assembly of components that enable processing of a said samples for analytical assessment by fluidic and/or particle based instruments. Microfluidic structures (channels, “T's”, “Y's”, branched “Y's”, wells, and weirs) are described for facilitating sample interaction and observation, sample analysis, sorting, or isolation. Detection can be accomplished using spectroscopic methods including, but not limited to, Raman spectroscopy of single cells and bulk cellular samples (collections of cells; several individuals to hundreds or thousands of cells).Type: GrantFiled: September 9, 2020Date of Patent: August 29, 2023Assignee: LUMACYTE, INC.Inventors: Sean Hart, Colin Hebert
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Patent number: 11669971Abstract: An imaging system and method for microbial growth detection, counting or identification. One colony may be contrasted in an image that is not optimal for another type of colony. The system and method provides contrast from all available material through space (spatial differences), time (differences appearing over time for a given capture condition) and color space transformation using image input information over time to assess whether microbial growth has occurred for a given sample.Type: GrantFiled: April 29, 2022Date of Patent: June 6, 2023Assignee: BD KIESTRA B.V.Inventors: Timothy M. Wiles, Raphael Rodolphe Marcelpoil
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Patent number: 11629325Abstract: A platform for testing cell response to biochemical agents. The TrophoWell™ includes a well which contains a gel, and a plurality of capillaries that open into it. Cells and various biochemical agents such as drugs and growth factors are flown through those capillaries. The platform allows for the evaluation of cell response by imaging. The platform is a cost effective testing platform and can be used in the fields for drug discovery and personalized medicine.Type: GrantFiled: March 30, 2020Date of Patent: April 18, 2023Assignee: The Trustees of Indiana UniversityInventors: Alexander Gumennik, Louis Alexandre van der Elst, Merve Gokce Kurtoglu
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Patent number: 11525833Abstract: The present invention provides rapid, sensitive high-throughput methods and systems for characterizing peptides or proteins using hydrophobic interaction chromatography-coupled native mass spectrometry to improve manufacturing process of biopharmaceutical products, such as identifying impurities during antibody purification, monitoring post-translational modification variants during production, or characterizing drug-to-antibody ratio of antibody-drug conjugates. The separation profiles of the peptides or proteins are generated and compared to identify or qualify the peptides or proteins.Type: GrantFiled: September 27, 2020Date of Patent: December 13, 2022Assignee: Regeneron Pharmaceuticals, Inc.Inventors: Yuetian Yan, Shunhai Wang
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Patent number: 11440006Abstract: A microfluidic detection chip for multi-channel rapid detection, including a chip body. A chip sampling port, a plurality of independent detection chambers, and a microfluidic channel are disposed on the chip body, and the chip sampling port is connected to the detection chambers by means of the microfluidic channel. The chip body further includes an electrode. The detection chambers are connected to the electrode. The microfluidic channel includes a main flow channel and a plurality of branching microfluidic channels. A tail end of the main flow channel is divided into the plurality of branching microfluidic channels, and the plurality of branching microfluidic channels are connected to the plurality of independent detection chambers in a one-to-one corresponding manner. And, the other end of the main flow channel is connected to the chip sampling port.Type: GrantFiled: January 24, 2019Date of Patent: September 13, 2022Assignee: LANSION BIOTECHNOLOGY CO., LTDInventors: Xingshang Xu, Jeffery Chen
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Patent number: 11419587Abstract: A liquid specimen collection device. Various embodiments implement oral fluid collection, extraction, storage, and/or testing. The device can be used to collect fluid, and to then extract and prepare the fluid for analysis, which can eliminate human error in collection and reduce complexity in diagnostic analysis. The disclosed device may be used to collect any liquid specimen. Any instance when liquid should be collected, stored, and tested may benefit from use of this disclosure.Type: GrantFiled: August 27, 2021Date of Patent: August 23, 2022Assignee: Porex CorporationInventors: Avi Robbins, Robert Carpio, III, Yuan Chang, Kathleen Fitzpatrick, Rahul Maharsia, Saman Mahdavi Shahidani, Hayden Shelly, Micah Streiff
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Patent number: 11353464Abstract: The present disclosure relates to methods for predicting time-to-delivery in pregnant women. The methods include predicting that a pregnant woman will deliver within a predetermined time frame if PAMG-1 is determined to be present at a level above a predetermined detection threshold in a vaginal fluid sample obtained from the pregnant woman. Also provided are methods for determining a patient's risk of preterm labor and/or spontaneous rupture of the chorioamniotic membrane.Type: GrantFiled: January 31, 2018Date of Patent: June 7, 2022Assignee: Qiagen Sciences, LLCInventors: Anthony Ausiello, Ruben Salinas, Michael Thompson, Daniel J. Mackey, Kaitlyn Nardozzi, Michael Friedman
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Patent number: 10681516Abstract: Electronic test devices and methods include data transfer capabilities. In one implementation, an assay device includes wireless communication capabilities to send assay result decisions and/or values to a separate processing and display device such as a smartphone. In another implementation, light sources are modulated both for performing an assay and encoding and transmitting a result of an assay.Type: GrantFiled: September 19, 2017Date of Patent: June 9, 2020Assignee: Z-INTEGRATED DIGITAL TECHNOLOGIES, INC.Inventors: Benedict L. Zin, Andy Sturman, Albert R. Nazareth
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Patent number: 10670576Abstract: The present invention refers to a device for measuring impedance in organotypic tissue comprising at least one recording chamber with a liquid permeable membrane supporting the organotypic tissue, at least one bottom electrode and at least one top electrode, wherein the liquid permeable membrane divides the recording chamber into a top chamber and a bottom chamber, wherein at least the bottom chamber contains culture medium for the organotypic tissue, and the bottom electrode(s) is/are located in the bottom chamber and the top electrode(s) is/are located in the top chamber, and wherein the organotypic tissue is located between the bottom electrode(s) and the top electrode(s). The present invention also refers to the use of the device according to the present invention for measuring impedance in organotypic tissue.Type: GrantFiled: January 18, 2017Date of Patent: June 2, 2020Assignee: Universität LeipzigInventors: Andrea Robitzki, Andrée Rothermel, Heinz-Georg Jahnke, Ina Sternberger, Frank Striggow, Till Mack
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Patent number: 9500646Abstract: The present invention relates to a cartridge for sensor for detecting the concentrations of one or more components in a sample. The cartridge for sensor for detecting one or more components in a sample of the present invention not only enables quantitative measurement of one or more components in a sample by one time sample injection but also facilitates mass-production with low cost owing to the simple structure and easiness in preparation and carry. Therefore, the cartridge of the present invention can be effectively used as the biosensor cartridge for field measurement.Type: GrantFiled: November 23, 2012Date of Patent: November 22, 2016Inventors: Kyujeong Song, Seung Hyun Jung, Moon Hee Choi, In Seok Jeong, Junhee Han, Geun Sig Cha
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Patent number: 9376703Abstract: A method for detecting a xerophilic microorganism is provided. The method comprises providing a sample to be tested, an aqueous diluent comprising about 1.0 to about 10.2 weight percent glycerol, and a thin film culture device comprising a cold water-reconstitutable medium to facilitate the growth of a microorganism. The method further comprises mixing the sample with the aqueous diluent to form an inoculum, contacting a predefined amount of the inoculum with the reconstitutable medium to form an inoculated thin film culture device, incubating the inoculated thin film culture device for a period of time, and detecting a presence or an absence of colony of a microorganism. Kits for detecting a xerophilic microorganism according to the method are also provided.Type: GrantFiled: May 29, 2013Date of Patent: June 28, 2016Assignee: 3M Innovative Properties CompanyInventors: Sailaja Chandrapati, Tera M. Nordby
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Patent number: 9297724Abstract: Disclosed are collection devices, kits, and methods for collecting and transporting one or more samples. A collection device of the present invention includes a central panel including a detachable sample strip. The sample strip has a sampling area for applying a sample on each side of the sample strip. The collection device includes two flaps, each capable of covering a portion of the sample strip that includes a sampling area. Consequently, a user is not exposed to a first sample when applying a second sample. Additionally, the sample strip can be detached without uncovering the sample strip.Type: GrantFiled: February 7, 2013Date of Patent: March 29, 2016Assignee: Sekisui Diagnostics LLCInventors: Fon-Chiu Mia Chen, Melanie Fadul, Hong Law, Edward Lee, Ann Marie Nanale, Jeffery White
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Patent number: 9261439Abstract: A system for depositing cells on an analysis plate, the cells being contained in a cell suspension including a fixing agent and the cells, included, for receiving the suspension, a chamber (5) which is positioned above the analysis plate and whose base is open and extends opposite a cell depositing zone of the plate and a material for absorbing the fixing agent placed around the chamber and the depositing zone of the plate. The chamber is mounted so as to be able to be moved between a first position in abutment against the analysis plate in order to allow the cells to be deposited on the depositing zone of the plate via decantation and a second position remote from this analysis plate in order to place the chamber in a fluid relationship with the absorption material in order to allow this material to absorb the fixing agent.Type: GrantFiled: January 25, 2012Date of Patent: February 16, 2016Assignee: NOVACYTInventor: Eric Roger Louis Peltier
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Patent number: 9102909Abstract: The assembly comprises a filtration unit and a gel growth medium cassette, the unit and the cassette being adapted to cooperate in order to occupy a nested position in which a membrane covers the gel growth medium, the unit and the cassette each being equipped with an intermediate stop, it being possible for at least one of the two stops to move clear so as to allow the unit to move from an intermediate position, in which the membrane is spaced away from the said gel growth medium, into the nested position. The method comprises selecting such an assembly, of engaging the unit on the cassette until the intermediate stop of the unit comes into contact with the intermediate stop of the cassette, and the step of moving clear the stop able to move clear so as to allow the unit to move from the intermediate position into the nested position.Type: GrantFiled: April 18, 2011Date of Patent: August 11, 2015Assignee: EMD Millipore CorporationInventors: Stephane Olivier, Mathieu Arrault
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Patent number: 9068217Abstract: The present invention provides a device for detecting aerobic bacteria, anaerobic bacteria and fungi in a targeted material which comprises of a plurality sided slide, and a vial, wherein a first side of said plurality sided slide is coated with a first predetermined medium for aerobic bacteria growth and a second side of said plurality sided slide is coated with a second predetermined medium for fungal (mold and yeast) growth, and wherein at the bottom of said vial a third predetermined medium is embedded to determine a level of presence of anaerobic bacteria.Type: GrantFiled: October 26, 2014Date of Patent: June 30, 2015Inventor: Saeed Mir Heidari
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Patent number: 9057046Abstract: The invention features devices for capturing and culturing cells (e.g., microorganisms, cells containing microorganisms, or cells from eukaryotic cell cultures) and methods of using these devices. One device is a cassette containing growth media that may be employed in an automated rapid enumeration system. The cassette has, for example, been enhanced with features for controlling surface flatness, optical imaging, controlled dehydration of semi solid nutrient media, controlled air and particle exchange, and automated handling. Another device of the invention is a filtration funnel that may used to concentrate cells in a sample onto a membrane.Type: GrantFiled: September 26, 2006Date of Patent: June 16, 2015Assignee: Rapid Micro Biosystems, Inc.Inventors: Douglas Browne, Don Straus, Chad Mace
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Patent number: 9034657Abstract: A two step lateral flow assay method for identifying IgE antibodies in a sample comprises applying a sample to a sample port of a device, wherein the device is adapted to deliver the sample to a lateral flow matrix having a plurality of IgE antigen species immobilized at respective positions at a first location; allowing the sample to travel along the lateral flow matrix through the immobilized plurality of IgE antigen species to a second location downstream of the first location; and, after a predetermined period of time, applying liquid buffer to the lateral flow matrix to mobilize labeled reagent which is adapted to bind anti-IgE antibody and which is dried on the lateral flow matrix at a location upstream of the sample port delivery of the sample to the lateral flow matrix, and allowing labeled reagent mobilized by the liquid buffer to travel along the lateral flow matrix through the immobilized plurality of IgE antigen species and bind with any IgE antibody bound to the immobilized IgE antigen species, aType: GrantFiled: December 8, 2010Date of Patent: May 19, 2015Assignee: Phadia ABInventors: Gerd Rundström, Per Matsson, Paul Christopher
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Patent number: 9028771Abstract: The invention provides a modified form of saturation assay, which is based on the measurement of a free or unbound labelled reagent fraction (such that there is an increase in signal in the presence of analyte) and employs trapping zones to concentrate said unbound or free labelled fraction to avoid loss of sensitivity. Preferably, the assay is a membrane assay.Type: GrantFiled: November 9, 2007Date of Patent: May 12, 2015Assignee: Platform Diagnostics LimitedInventors: Douglas Robert Evans, Gerald John Allen, Carolyn Jennifer Ruddell
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Patent number: 9028772Abstract: A method may involve forming one or more photoresist layers over a sensor located on a structure, such that the sensor is covered by the one or more photoresist layers. The sensor is configured to detect an analyte. The method may involve forming a first polymer layer. Further, the method may involve positioning the structure on the first polymer layer. Still further, the method may involve forming a second polymer layer over the first polymer layer and the structure, such that the structure is fully enclosed by the first polymer layer, the second polymer layer, and the one or more photoresist layers. The method may also involve removing the one or more photoresist layers to form a channel through the second polymer layer, wherein the sensor is configured to receive the analyte via the channel.Type: GrantFiled: June 28, 2013Date of Patent: May 12, 2015Assignee: Google Inc.Inventors: Huanfen Yao, Jeffrey George Linhardt, Babak Parviz
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Patent number: 8999728Abstract: The invention comprises a device for detecting an analyte in a liquid sample deposited on a first portion of the device for transport to a second portion of the device that is in fluid contact with the first portion. In specific embodiments, the device is a pregnancy test device, which detects human chorionic gonadotropin (hCG) as an indicator of pregnancy. Devices with improved clinical sensitivity are provided which are capable of detecting all clinically relevant hCG isoforms.Type: GrantFiled: December 21, 2011Date of Patent: April 7, 2015Assignee: Church & Dwight Co., Inc.Inventors: Albert R. Nazareth, Shang Li
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Patent number: 8986625Abstract: A method for sampling a sulphur-containing solid product including supplying a gas flow comprising hydrogen sulphide, bringing the gas flow into contact with a solid reagent and reacting the solid reagent with the hydrogen sulphide contained in the gas flow, the reaction fixing the sulphur of the hydrogen sulphide by forming a sulphur-containing solid product which is different in color from the solid reagent, and recovering the sulphur-containing solid product. The invention also relates to a device suitable for the implementation of this method.Type: GrantFiled: August 27, 2013Date of Patent: March 24, 2015Assignee: Total S.A.Inventors: Daniel Dessort, Robert Le Van Loï, Nadine Loubere
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Publication number: 20150079669Abstract: A hydrogel is dried by a critical point drying technique. The hydrogel may include indicator molecules embedded therein and may be part of a hydrogel-based device, such as, for example, an analyte sensor.Type: ApplicationFiled: September 18, 2014Publication date: March 19, 2015Applicant: Senseonics, IncorporatedInventors: Philip Huffstetler, Aneta Modzelewska
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Patent number: 8980572Abstract: A method for generating and localizing a signal in a solid phase substrate detection system comprises applying a solution of target material to a substrate; binding the target with a specific affinity molecule having an attached label, the label comprising multiple signal precursor molecules; applying a carrier to the substrate, and treating the label to convert the signal precursor molecules to signal generating molecules. The carrier comprises solvent for the label and thickener for localizing the signal. The carrier may include developer that converts signal precursor molecules to signal generating molecules. Developer is not necessary if the signal precursor molecules are converted to signal generating molecules by e.g. temperature change, pH change, sonication, light irradiation, microwave heating. A test device for detecting target in a fluid sample, and a kit of parts for determining the presence of target in a fluid sample are also disclosed.Type: GrantFiled: June 14, 2010Date of Patent: March 17, 2015Assignee: Supernova Diagnostics, Inc.Inventors: Ling Wai Wong, Pui Yee Cangel Chan, Wing Cheung Mak, King Keung Sin, Reinhard Renneberg
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Patent number: 8968677Abstract: An improved apparatus and method for dispersion of a labeling conjugate in a diagnostic assay, the result being a one-step assay. By eliminating a conjugate pad as in conventional lateral diagnostic devices, and forming a frazil ice pellicle (FIP), rehydration and flow are improved resulting in better reproducibility, improved sensitivity, and reduced costs of individual assay devices. The formation of a frazil ice film formed on a super cooled surface of a sample receiving means simplifies assay assembly. Lyophilization of the FIP improves the release of a sample/analyte/label matrix into a macro channel as in a direct flow assay, while at the same time allowing reagents to mix and flow, thereby optimizing the assay performance. The reagents of the conjugate and the formation of the FIP stabilize the conjugate proteins and provide extended shelf life to the diagnostic assay device.Type: GrantFiled: January 22, 2013Date of Patent: March 3, 2015Assignee: Quantum Design International, Inc.Inventors: Ronald T. LaBorde, Nicholas J. Neild
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Patent number: 8962341Abstract: An assay system designed to detect a protein biomarker in urine that is diagnostic for interstitial cystitis (IC). The presence of a 9 amino acid glycopeptide, antiproliferative factor (APF), in urine is unique to patients with IC. Urine samples from patients who exhibit symptoms consistent with IC are added to the assay system. Binding of APF to the cytoskeletal associated protein 4 (CKAP4) is positive for the presence of APF in urine and diagnostic for IC. The diagnostic system is a significant and surprising advance in diagnosis of IC and has commercial applications relevant to women and men who suffer from symptoms consistent with IC.Type: GrantFiled: December 10, 2009Date of Patent: February 24, 2015Assignees: The Commonwealth Medical College, University of Florida Research Foundation, Inc.Inventors: David Alan Zacharias, Sonia Lobo Planey
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Patent number: 8956859Abstract: A host antigen-specific antibody testing system and method. The a ternary complex of the antigen, a ligand-bound anti-host IgM, and a non-host anti-antigen IgG detector conjugate selectively form a quaternary complex with host antibodies, wherein the host antibodies and IgG compete for the antigen, and the IgM binds the host antibodies. The quaternary complex is retained by an immobilized IgM ligand binding agent, and any residual ternary is retained by a later encountered immobilized anti-non-host IgG. If sufficient host antibodies have a high affinity for the antigen, the complex is detected at the quaternary complex detection region based on the presence of the detector, and if there are insufficient high affinity host antibodies, the ternary complex migrates past the quaternary complex detection region and is retained and detected at a control region.Type: GrantFiled: August 15, 2011Date of Patent: February 17, 2015Assignee: Aviex Technologies LLCInventor: David G. Bermudes
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Publication number: 20150044761Abstract: A food safety detection device includes a xylem fiber substrate, which is configured with a sampling portion and a reaction portion. The reaction portion includes at least one chemical reagent. The sampling portion absorbs a test sample. The test sample moves on the xylem fiber substrate to the reaction portion and reacts with the chemical reagent. A manufacturing method for the food safety detection device is also disclosed. The food safety detection device is advantageous for easy operation, safety and rapid analysis.Type: ApplicationFiled: October 27, 2014Publication date: February 12, 2015Inventors: Chen-Meng KUAN, Roger L. YORK, Robert S. LANGER, Chao-Min CHENG
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Publication number: 20150044714Abstract: A device and method for determining the presence or absence, or the level of, sPLA2 activity in a fluid sample. The device includes an absorbent matrix that defines a flow path for a fluid sample, a first region of the absorbent matrix for applying a fluid sample, where one of the components selected from a bioactive sPLA2 substrate and a label is dried onto or within the first region of the absorbent matrix, a second region of the absorbent matrix downstream of, and in fluid communication with, the first region for detecting an aggregated reaction product, where the other component not present in the first region is dried onto or within the second region of the absorbent matrix.Type: ApplicationFiled: June 5, 2012Publication date: February 12, 2015Applicant: Philadelphia Health & Education Corporation d/b/a Drexel University College of MedicineInventors: Timothy J. Cunningham, Katherine Marie Kollins Callaghan, Lihua Yao
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Patent number: 8945939Abstract: The invention is directed towards methods and compositions for identifying the amount of hydrofluoric acid in a buffered oxide etching composition. In buffered oxide etching compositions it is very difficult to measure the amount of hydrofluoric acid because it has varying equilibriums and it is toxic so it hard to handle and sample. When used to manufacture microchips however, incorrect amounts of hydrofluoric acid will ruin those chips. The invention utilizes a unique method of spectrographically measuring the hydrofluoric acid when in contact with added chromogenic agents to obtain exact measurements that are accurate, immediate, and safe.Type: GrantFiled: November 18, 2013Date of Patent: February 3, 2015Assignee: Ecolab USA Inc.Inventors: Amy M. Tseng, Brian V. Jenkins, Robert Mack
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Patent number: 8945943Abstract: A general methodology for the development of highly sensitive and selective sensors that can achieve portable, low-cost and quantitative detection of a broad range of targets using only a personal glucose meter (PGM) is disclosed. The method uses recognition molecules that are specific for a target agent, enzymes that can convert an enzyme substrate into glucose, and PGM. Also provided are sensors, which can include a solid support to which is attached a recognition molecule that permits detection of a target agent, wherein the recognition molecule specifically binds to the target agent in the presence of the target agent but not significantly to other agents as well as an enzyme that can catalyze the conversion of a substance into glucose, wherein the enzyme is attached directly or indirectly to the recognition molecule, and wherein in the presence of the target agent the enzyme can convert the substance into glucose. The disclosed sensors can be part of a lateral flow device.Type: GrantFiled: May 26, 2011Date of Patent: February 3, 2015Assignee: The Board of Trustees of the University of IllinoisInventors: Yi Lu, Yu Xiang
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Patent number: 8940525Abstract: Disclosed is a simple device for a membrane assay using the lateral flow immunoassay method, whereby a subject to be detected can be detected at a high sensitivity, provided with, as a label drying pad, a substrate which has a higher tensile strength than glass fiber and can well release a label. The present invention provides a simple membrane assay device, comprising: a supporting board, a sample supply part, a label containing a labeling component which labels a subject to be detected, a development part formed with a detection part which includes a trapping reagent for detecting or quantifying the subject to be detected, and an absorption part, wherein a non-woven fabric which includes fibers having a fiber diameter of 0.05 to 10 ?m is used in the labeling component part.Type: GrantFiled: October 27, 2011Date of Patent: January 27, 2015Assignee: Denko Seiken Co., Ltd.Inventors: Takanori Hirose, Koichi Inano, Hideharu Simizu
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Patent number: 8940246Abstract: A system for diagnostic testing may include a meter for performing a diagnostic test on a sample applied to a test media, the meter having a housing and an interface for receiving a signal representing coding information, and a container configured to contain test media compatible with the meter, the container having a coding element associated therewith. Additionally, the system may provide a mechanism for removing the meter from an interconnected test container and reattaching it to a new container using on-container coding methods that can recalibrate the meter for the new container of test strips.Type: GrantFiled: November 1, 2007Date of Patent: January 27, 2015Assignee: Nipro Diagnostics, Inc.Inventors: Gary T. Neel, Brent E. Modzelewski, George R. Rounds, Carlos Oti, Allan Javier Caban, Jeffrey Akins
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Patent number: 8940237Abstract: An optic light guide test sensor comprises a light guide, a reagent-coated membrane, and a mesh layer. The reagent-coated membrane and the mesh layer are attached to the light guide at an output end of the light guide. The light guide test sensor is adapted to be used to test the level of an analyte in a biological fluid sample when used with a readhead. A method of manufacturing the light guide test sensor involves providing a plurality of light guides, providing a strip of reagent-coated membrane, and providing a strip of mesh layer. The reagent-coated membrane and mesh layer are attached to the light guides by ultrasonic welding. The reagent-coated membrane and mesh layer may also be attached to the light guides by adhesive.Type: GrantFiled: January 22, 2013Date of Patent: January 27, 2015Assignee: Bayer HealthCare LLCInventors: Jeffery S. Reynolds, Steven C. Charlton, Sung-Kwon Jung, Suny J. George
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Patent number: 8940527Abstract: The present invention provides an apparatus for fluid sample collection and analyte testing, including a sample receiving member and at least one membrane test strip, and optionally a sample retention member, fingerprint acquisition pad, and/or fluid collector. It also provides a fluid collection apparatus having an absorbent material, compression element, and closure element, and optionally a lid that allows the apparatus to be used in conjunction with a fluid container. Also provided are methods of collecting, testing, and retaining a fluid sample and verifying the identity of one or more individuals associated with the sample, such as the test subject, test administrator, and/or witnesses.Type: GrantFiled: December 22, 2010Date of Patent: January 27, 2015Assignee: Lamina Equities Corp.Inventor: Raouf A. Guirguis
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Patent number: 8932234Abstract: Devices, systems, and methods for the collection of biological samples. In at least one exemplary embodiment, a device comprises a collection medium having top and bottom surfaces and a predetermined size and shape, the top surface comprising a position marker and at least one binding site operable to bind a biological sample, a protective facing substantially impermeable to the biological sample, the protective facing coupled to the top surface of the collection medium and having a size and shape substantially similar to the predetermined size and shape of the collection medium. The protective facing being sized and shaped to define a first void positioned to allow for the transfer of the biological sample through the protective facing and onto the at least one binding site of the collection medium, and a second void positioned to expose the position marker for alignment of the collection medium.Type: GrantFiled: October 11, 2011Date of Patent: January 13, 2015Assignee: Bioanalytical Systems, Inc.Inventors: Scott R. Peters, James M. Hampsch
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Patent number: 8932874Abstract: The invention is directed towards methods and compositions for identifying the amount of ammonium acid in a buffered oxide etching composition. In buffered oxide etching compositions it is very difficult to measure the amount of ammonium acid because it has varying equilibriums and it is toxic so it hard to handle and sample. When used to manufacture microchips however, incorrect amounts of ammonium acid will ruin those chips. The invention utilizes a unique method of spectrographically measuring the ammonium acid when in contact with added chromogenic agents to obtain exact measurements that are accurate, immediate, and safe.Type: GrantFiled: July 2, 2014Date of Patent: January 13, 2015Assignee: Nalco CompanyInventors: Amy M. Tseng, Brian V. Jenkins, Robert M. Mack
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Patent number: 8927262Abstract: The present invention is related to a diagnostic test kit for detecting luteinizing hormone (LH) in a biological sample at a concentration relative to a threshold concentration of LH. The device can include a release medium formed of a first material and including a labeled conjugate with a detectable label and a first binding member reactive with a first epitope of LH and a capture medium formed of a second, different material, in fluid communication with the release medium. The capture medium includes a result site having immobilized thereon a capture component capable of directly or indirectly binding LH that is bound to the labeled conjugate. The device is calibrated such that color development at the result site occurs only when the LH concentration of the liquid sample is greater than the threshold concentration.Type: GrantFiled: October 4, 2010Date of Patent: January 6, 2015Assignee: Church & Dwight Co., Inc.Inventors: Albert R. Nazareth, Timothy Snowden, Mary Beth Boyle
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Publication number: 20150004594Abstract: The present invention provides a semi-quantitative lateral flow assay device and method for generating semi-quantitative data from a lateral flow assay. The device comprises a thin, porous hydrophilic substrate wherein the substrate includes a star-shaped or other geometry taken in plan view having a liquid sample-receiving central region and multiple arms that extend or radiate out from the central region. Each arm includes a reaction zone formed by the presence of an analyte-capturing agent wherein the reaction zone of each arm is located at a different distance from the central region such that the analyte in the sample is captured accumulates in different quantities at at least some of the reaction zones of the arms in a manner that can be analyzed to yield semi-quantitative data from lateral flow assays.Type: ApplicationFiled: September 11, 2014Publication date: January 1, 2015Inventor: Scott S. Sibbett
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Patent number: 8920725Abstract: The present invention is an improved apparatus for sample analysis. The apparatus employs an assay component containing a membrane having one or a plurality of analyte-specific binding agents attached thereto, a means for absorbing liquid, and a piston means for drawing analytes through said membrane into said means for absorbing liquid. The apparatus is configured to be portable and provide a detector for detecting binding of an analyte to an analyte-specific binding agent, a plurality of data acquisition components, and a computer for integrating, analyzing and storing the detected analyte specific binding and acquired data.Type: GrantFiled: September 29, 2011Date of Patent: December 30, 2014Assignee: Montecito Bio-Sciences, Ltd.Inventors: Edward W. Withrow, III, Jorn Gorlach
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Patent number: 8916110Abstract: A device and a process are proposed for separating constituents of a sample fluid, wherein the sample fluid is supplied by capillary force to a receiving region (7) for metering, stopping or delaying the sample fluid and the sample fluid is pre-treated with a soluble chemical (13) in the receiving region (7) before the sample fluid is supplied to a separating device (5) for separating off constituents of the sample fluid.Type: GrantFiled: July 5, 2011Date of Patent: December 23, 2014Assignee: Boehringer Ingelheim Microparts GmbHInventors: Tobias Rodenfels, Gert Blankenstein