Patents by Inventor Deborah P. Tuohy

Deborah P. Tuohy 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).

  • Test strip for measuring analyte concentration over a broad range of sample volume
    Patent number: 6986869
    Abstract: A test strip for determining the concentration of an analyte in a body fluid includes a membrane in fluid communication with a porous layer. The membrane and the porous layer are divided into compressed portions, which restrict the capillary flow of the body fluid, and uncompressed portions. The uncompressed portions are adapted to absorb and retain body fluids in excess of the amount required for operation of the test strip. The test strip may be constructed with an internal relief chamber to accommodate the uncompressed portions. A method of making the test strip by pressure and/or heat sealing individual components on a shaping die is also provided.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: January 17, 2006
    Assignee: LifeScan, Inc.
    Inventors: Deborah P. Tuohy, John M. Dubowik
  • Method of making a test strip for determining analyte concentration over a broad range of sample volumes
    Patent number: 6949221
    Abstract: A test strip for determining the concentration of an analyte in a body fluid includes a membrane in fluid communication with a porous layer. The membrane and the porous layer are divided into compressed portions, which restrict the capillary flow of the body fluid, and uncompressed portions. The uncompressed portions are adapted to absorb and retain body fluids in excess of the amount required for operation of the test strip. The test strip may be constructed with an internal relief chamber to accommodate the uncompressed portions. A method of making the test strip by pressure and/or heat sealing individual components on a shaping die is also provided.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: September 27, 2005
    Assignee: LifeScan, Inc.
    Inventors: Ernest J. Kiser, Deborah P. Tuohy, John M. Dubowik
  • Method of making a test strip for determining analyte concentration over a broad range of sample volumes
    Publication number: 20020106710
    Abstract: A test strip for determining the concentration of an analyte in a body fluid includes a membrane in fluid communication with a porous layer. The membrane and the porous layer are divided into compressed portions, which restrict the capillary flow of the body fluid, and uncompressed portions. The uncompressed portions are adapted to absorb and retain body fluids in excess of the amount required for operation of the test strip. The test strip may be constructed with an internal relief chamber to accommodate the uncompressed portions. A method of making the test strip by pressure and/or heat sealing individual components on a shaping die is also provided.
    Type: Application
    Filed: March 28, 2002
    Publication date: August 8, 2002
    Inventors: Deborah P. Tuohy, John M. Dubowik
  • Test strip for measuring analyte concentration over a broad range of sample volume
    Publication number: 20020106711
    Abstract: A test strip for determining the concentration of an analyte in a body fluid includes a membrane in fluid communication with a porous layer. The membrane and the porous layer are divided into compressed portions, which restrict the capillary flow of the body fluid, and uncompressed portions. The uncompressed portions are adapted to absorb and retain body fluids in excess of the amount required for operation of the test strip. The test strip may be constructed with an internal relief chamber to accommodate the uncompressed portions. A method of making the test strip by pressure and/or heat sealing individual components on a shaping die is also provided.
    Type: Application
    Filed: March 28, 2002
    Publication date: August 8, 2002
    Inventors: Deborah P. Tuohy, John M. Dubowik
  • Test strip for measuring analyte concentration over a broad range of sample volume
    Patent number: 6395227
    Abstract: A test strip for determining the concentration of an analyte in a body fluid includes a membrane in fluid communication with a porous layer. The membrane and the porous layer are divided into compressed portions, which restrict the capillary flow of the body fluid, and uncompressed portions. The uncompressed portions are adapted to absorb and retain body fluids in excess of the amount required for operation of the test strip. The test strip may be constructed with an internal relief chamber to accommodate the uncompressed portions. A method of making the test strip by pressure and/or heat sealing individual components on a shaping die is also provided.
    Type: Grant
    Filed: May 16, 1995
    Date of Patent: May 28, 2002
    Assignee: Lifescan, Inc.
    Inventors: Ernest J. Kiser, Deborah P. Tuohy, John M. Dubowik
  • Visually-readable reagent test strip
    Patent number: 5843691
    Abstract: A multilayer reagent test strip measures the concentration of analyte in a liquid sample that is applied to it. The sample is guided to a number of assay areas arrayed along the strip, where the analyte can react with a reagent to cause a color change. Each assay area also includes an inhibitor for the color-change reaction. The inhibitor concentration increases in successive assay areas; thus, the number of areas that change color is a measure of the analyte concentration. The test strip is particularly adapted for measuring glucose in a whole blood sample. In a preferred embodiment, the sample is guided to the assay areas along a path formed by crushing selected areas of a membrane, and the assay areas are uncrushed areas of the membrane.
    Type: Grant
    Filed: December 31, 1996
    Date of Patent: December 1, 1998
    Assignee: Lifescan, Inc.
    Inventors: Joel Douglas, Ernest Kiser, Michael F. Tomasco, Remedios Dato, Edward G. Rice, Deborah P. Tuohy, Mark Maxson, Zbigniew Witko, Scott Segelke