Patents by Inventor Michael Marquant

Michael Marquant has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090057148
    Abstract: The measuring system for in vivo monitoring of an analyte concentration with malfunction detection, comprises an electrode system, a potentiostat and an evaluation unit. The electrode system has a working electrode, a reference electrode, and a counter electrode. The potentiostat is for adjusting a difference of potential between the electric potential of the working electrode and the electric potential of the reference electrode to a specified value and for measuring an electric current flowing between the working electrode and the counter electrode. The potentiostat comprises a working electrode terminal for connection to the working electrode, a reference electrode terminal for connection to the reference electrode, and a counter electrode terminal for connection to the counter electrode. The evaluation unit monitors the electric potential of the counter electrode and generates a malfunction signal when said potential is outside a specified reference range. A method of operation is also disclosed.
    Type: Application
    Filed: August 29, 2008
    Publication date: March 5, 2009
    Inventors: Herbert Wieder, Michael Marquant
  • Publication number: 20090020439
    Abstract: An electrochemical biosensor analysis system is provided for analyzing a sample liquid, comprising a biosensor having an electrode structure made of at least two electrodes, a test field, covering the electrode structure and capable of absorbing the sample liquid, and a defined sample application surface on the top side of the test field. The system also includes an analysis instrument comprising an evaluation unit for determining the desired analysis data. The analysis instrument comprises an AC resistance measuring device for measuring an AC resistance value between two electrodes of the electrode structure by means of an area compensation measurement. The measured AC resistance value is used, in the determination of the analysis data, as a measure of the partial area of the effective electrode structure area wetted by the sample liquid.
    Type: Application
    Filed: July 22, 2008
    Publication date: January 22, 2009
    Inventors: Michael Marquant, Udo Zapf, Gregor Bainczyk, Volker Unkrig, Mihail-Onoriu Lungu, Holger Kotzan
  • Publication number: 20080242962
    Abstract: The analyte concentration, such as glucose, in a human or animal body is measured with an implantable sensor that generates measurement signals. The measurement signals are compressed through statistical techniques to produced compressed measurement data that can is easier to process and communicate. A base station carries the implantable sensor along with a signal processor, memory, and a transmitter. A display device is also disclosed that can receive the compressed measurement data from the base station for further processing and display.
    Type: Application
    Filed: March 20, 2008
    Publication date: October 2, 2008
    Inventors: Bernd Roesicke, Karin Obermaier, Stefan Lindegger, Andreas Menke, Joerg Scherer, Karin Schwind, Otto Gaa, Gregor Bainczyk, Michael Marquant, Sandro Niederhauser, Michael Schoemaker, Martin Mueri
  • Publication number: 20080078680
    Abstract: A measuring device for analyzing a sample liquid having at least one analyte is provided. A test field support housed in the device includes a number of individual test fields in communication with electrochemical measuring cells of the test field support. Reagents can be assigned to the electrochemical measuring cells which can react with a sample liquid. The reaction can lead to a measurable change of at least one quantity characteristic of the presence or concentration of an analyte in the sample. The measuring device includes evaluation electronics. The individual test fields on the test field support are accessible to the user after the measuring device has been opened.
    Type: Application
    Filed: October 15, 2007
    Publication date: April 3, 2008
    Inventors: Michael Marquant, Mihail-Onoriu Lungu
  • Publication number: 20070293790
    Abstract: A diagnostic system has a diagnostic module with an integrated lancet system and a magazine module separate from the diagnostic module. The diagnostic device also has a connecting device that is used for tensioning the lancet system.
    Type: Application
    Filed: May 29, 2007
    Publication date: December 20, 2007
    Inventors: Gregor Bainczyk, Michael Marquant, Herbert Wieder
  • Publication number: 20060108236
    Abstract: Biosensor system and method for the electrochemical determination of an concentration of an analyte in a sample. An analyte reactant is at least partially hydrated by the sample to form a reaction layer in contact with electrodes for measurement of an analyte detection current. The analyte detection current is characteristic of the analyte concentration in the sample by virtue of a reaction sequence comprising an analyte-specific reaction taking place in the reaction layer and an electrode reaction including transfer of electrons through an electrode surface. A plurality of values of a curve of the analyte detection current versus time are measured and the analyte concentration is derived therefrom by means of an evaluation algorithm.
    Type: Application
    Filed: October 7, 2005
    Publication date: May 25, 2006
    Inventors: Joachim Kasielke, Michael Marquant
  • Publication number: 20050230253
    Abstract: A capillary biosensor analysis system is provided for analyzing a liquid sample, comprising a plurality of longitudinally arranged and consecutively provided and aligned capillary biosensors having a capillary channel enclosed by at least two wall parts and containing one or more reagents, and an evaluation instrument which has a holder to position a forward-most capillary biosensor in a measurement position for performing an analysis. The plurality of capillary biosensors are implemented as a multiple capillary-biosensor strip. A multiple capillary-biosensor strip is guided and held in the holder in such a manner that one capillary biosensor of the strip at a time is located in the measurement position. The multiple capillary-biosensor strip is movable in the evaluation instrument in such a manner that consecutive capillary biosensors of the multiple capillary-biosensor strip are transported one after the other into the measurement position.
    Type: Application
    Filed: March 24, 2005
    Publication date: October 20, 2005
    Inventor: Michael Marquant
  • Publication number: 20050123441
    Abstract: The invention concerns a reagent system for the so-called on-board control of analytical elements, in particular test strips, containing an organic N-oxide or a nitroso compound. The invention also concerns analytical elements containing a reagent system for a detection reaction and a reagent system for an on-board control. Furthermore, the invention concerns a method for checking analytical elements in which a reagent system for an on-board control is examined optically or electrochemically with the aid of a measuring instrument for changes which could indicate a stress of the analytical element.
    Type: Application
    Filed: October 12, 2004
    Publication date: June 9, 2005
    Inventors: Volker Unkrig, Christine Nortmeyer, Carina Horn, Michael Marquant, Mihail-Onoriu Lungu, Joachim Hoenes, Holger Kotzan, Joerg Dreibholz
  • Publication number: 20050016844
    Abstract: A test strip having a small sample-receiving chamber on the order of less than 1 microliter. The inventive test strip includes a reagent layer that extends across the width of the test strip and also extends to the sample-receiving end, such that the edges of the reagent layer are aligned with the side and dose receiving edges of the test strip. The hydrophilic reagent extending to the dosing edge of the strip promotes wicking of the sample into the test strip. The end and side edges of the reagent layer are preferably formed as part of a cutting process that forms individual test strips from a larger web, which results in a smooth and thin reagent layer with a uniform thickness, substantially covering the entire floor of the sample-receiving chamber. The inventive mass production process helps improve the reproducibility of the quantity, location, thickness and other properties of the reagent layer, which in turn improves the accuracy of the test result.
    Type: Application
    Filed: June 18, 2004
    Publication date: January 27, 2005
    Inventors: David Burke, Michael Marquant, Udo Zapf, Michael Fritz, Dan Mosoiu, Chris Wilsey
  • Publication number: 20050013731
    Abstract: A test strip with a covering layer having a novel slot. The slot divides the inventive covering layer into two parts and provides a vent opening that allows air to escape as fluid enters a cavity or sample receiving chamber formed in the test strip. In preferred embodiments, the covering layer is clear such that the user can see through it and the slot doubles as a “fill line.” The user can thus watch the fluid sample enter the test strip, progress through the capillary cavity, and then stop at the slot or fill-line. This provides positive assurance to the user that the sample size is sufficient and the test strip has been filled properly. The present invention also provides an advantageous method of mass-producing the inventive test strips without having to align the slot or vent opening laterally with respect to the test strips and without having to punch a vent opening. The method is also well suited to mass production by roll processing techniques.
    Type: Application
    Filed: June 18, 2004
    Publication date: January 20, 2005
    Inventors: David Burke, Michael Marquant
  • Publication number: 20040154923
    Abstract: The invention concerns a test device for analysing especially a biological sample liquid comprising a composite body (10) consisting of a plurality of layers of flat material (12, 18, 30) and a sample channel (20) located in the composite body (10) for transporting the sample liquid from an application site (22) to a measuring site (24). According to the invention it is proposed that the composite body (10) has a plurality of transport layers (18) arranged in a stack-like manner between support layers (12) for holding in each case a sample channel (20).
    Type: Application
    Filed: July 25, 2003
    Publication date: August 12, 2004
    Inventors: Michael Marquant, Volker Unkrig, Fritz Hindelang
  • Publication number: 20030146113
    Abstract: The invention concerns an electrochemical sensor based on dry chemistry for determining blood coagulation or individual coagulation factors which has at least two electrodes on an inert support as well as a dry reagent, characterized in that the reagent contains a protease substrate which is composed of a peptide residue that can be cleaved off by a thrombin and is bound to a phenylenediamine residue via an amide bond at its carboxyl end and
    Type: Application
    Filed: December 6, 2002
    Publication date: August 7, 2003
    Inventors: Volker Unkrig, Michael Marquant, Fritz Hindelang, Holger Kotzan, Carina Horn, Christine Nortmeyer