Patents by Inventor Stephen MacKintosh

Stephen MacKintosh 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).

  • Patent number: 11604158
    Abstract: A method for determining contamination of a biosensor in which the biosensor is loaded into a test meter and a sample is then applied. First and second predetermined test voltages are applied between spaced electrodes of the biosensor for respective first and second predetermined time intervals. First and second current values are measured during the respective first and second predetermined time intervals. Reference values are determined based on the measured first and second current values. Based on one or more of the reference values, a determination of contamination is made. Reporting of the analyte concentration of the sample can be suppressed based on the determination.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: March 14, 2023
    Assignee: LifeScan IP Holdings, LLC
    Inventors: David McColl, Allan MacRae, Gavin MacFie, Stephen Mackintosh, David Morris, Joanne Watt, Antony Smith
  • Publication number: 20190331632
    Abstract: A method for determining contamination of a biosensor in which the biosensor is loaded into a test meter and a sample is then applied. First and second predetermined test voltages are applied between spaced electrodes of the biosensor for respective first and second predetermined time intervals. First and second current values are measured during the respective first and second predetermined time intervals. Reference values are determined based on the measured first and second current values. Based on one or more of the reference values, a determination of contamination is made. Reporting of the analyte concentration of the sample can be suppressed based on the determination.
    Type: Application
    Filed: April 27, 2018
    Publication date: October 31, 2019
    Inventors: David MCCOLL, Allan MACRAE, Gavin MACFIE, Stephen MACKINTOSH, David MORRIS, Joanne WATT
  • Publication number: 20180217079
    Abstract: Systems and methods for determining a concentration of an analyte in a physiological fluid are presented. A test voltage is applied between a first electrode and the second electrode of a biosensor, in which the first electrode includes a reagent and the second electrode is uncoated with the reagent. The reagent is selected for a reaction with the analyte, but not with the interferent. First and second current values are measured at the first and second electrodes during first and second time periods after application of the test voltage, respectively. First and second current parameters are determined by taking the sums of the current values and subtracting factors dependent on at least one of the current values. The analyte concentration is determined as a function of a ratio of the first current parameter and the second current parameter.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 2, 2018
    Inventor: Stephen A. Mackintosh
  • Patent number: 9828621
    Abstract: Various embodiments for a method that allow for a more accurate analyte concentration with a biosensor by determining at least one physical characteristic of the sample and determining whether at least one output transient signal of the biosensor is erroneous by monitoring the biosensor and flagging an error if the signal outputs of the biosensor do not meet certain criteria.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: November 28, 2017
    Assignee: LifeScan Scotland Limited
    Inventor: Stephen Mackintosh
  • Patent number: 9618517
    Abstract: Described and illustrated herein are systems and exemplary methods of operating an analyte measurement system having a meter and a test strip. The methods and systems describe herein allow for trapping various errors during calculation of the analyte due to variations in the structure and materials making up the test strip and ambient temperatures.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: April 11, 2017
    Assignee: LifeScan Scotland Limited
    Inventors: Stephen Mackintosh, David McColl
  • Patent number: 9494555
    Abstract: Described are methods and systems to apply a plurality of test voltages to the test strip and measure a current transient output resulting from an electrochemical reaction in a test chamber of the test strip so that a glucose concentration can be determined that account for hematocrits in both typical subjects and neonates.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: November 15, 2016
    Assignee: Cilag GmbH International
    Inventors: Anna Zvikhachevskaya, Stephen Mackintosh, Adam Craggs
  • Patent number: 9435764
    Abstract: Various embodiments for methods, systems, and meters that allow for a more accurate analyte concentration with a biosensor by determining at least one physical characteristic of the sample and determining whether at least one output transient signal of the biosensor is erroneous by monitoring the biosensor and flagging an error if the signal outputs of the biosensor do not meet certain criteria.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: September 6, 2016
    Assignee: LifeScan Scotland Limited
    Inventor: Stephen MacKintosh
  • Patent number: 9435762
    Abstract: Various embodiments for a method that allow for a more accurate analyte concentration with a biosensor by determining at least one physical characteristic of the sample and determining whether a sample fill condition is erroneous by monitoring the working electrodes and flagging an error if the signal outputs of the working electrodes do not meet certain thresholds.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: September 6, 2016
    Assignee: LifeScan Scotland Limited
    Inventor: Stephen MacKintosh
  • Patent number: 9423374
    Abstract: Various embodiments for a method that allow for a more accurate analyte concentration with a biosensor by determining at least one physical characteristic of the sample and determining whether a counter or reference electrode is causing an error by monitoring the working electrodes and flagging an error if the signal outputs of the working electrodes do not meet certain thresholds.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: August 23, 2016
    Assignee: LifeScan Scotland Limited
    Inventors: Stephen Mackintosh, Antony Smith
  • Publication number: 20160216226
    Abstract: Various embodiments for a method that allow for a more accurate analyte concentration with a biosensor by determining at least one physical characteristic of the sample and determining whether a counter or reference electrode is causing an error by monitoring the working electrodes and flagging an error if the signal outputs of the working electrodes do not meet certain thresholds.
    Type: Application
    Filed: January 26, 2015
    Publication date: July 28, 2016
    Inventors: Stephen MACKINTOSH, Antony SMITH
  • Publication number: 20150362453
    Abstract: An electrochemical-based analytical test strip (EBATS) for the determination of an analyte (such as glucose) in a bodily fluid sample (for example, a whole blood sample) includes an electrically insulating base layer (110), a patterned electrically conductive layer (120) disposed on the electrically insulating base layer, an enzymatic reagent layer (140) disposed on the patterned electrically conductor layer, a patterned spacer layer (150), a top layer (170) having an underside surface, and a soluble acidic material coating (160) on the underside surface of the top layer. The patterned spacer layer and top layer define a sample-receiving chamber (180) within the EBATS and the soluble acidic material coating is disposed on the underside surface of the top layer within the sample-receiving chamber. In addition, the soluble acidic material coating is operably dissolvable in the bodily fluid sample such that a pH of the bodily fluid sample in the sample-receiving chamber is reduced during use of the EBATS.
    Type: Application
    Filed: January 30, 2014
    Publication date: December 17, 2015
    Inventors: Gavin MACFIE, Alexander COOPER, Christopher LEACH, Stephen MACKINTOSH
  • Publication number: 20150068922
    Abstract: Various embodiments for a method that allow for a more accurate analyte concentration with a biosensor by determining at least one physical characteristic of the sample and determining whether at least one output transient signal of the biosensor is erroneous by monitoring the biosensor and flagging an error if the signal outputs of the biosensor do not meet certain criteria.
    Type: Application
    Filed: September 10, 2013
    Publication date: March 12, 2015
    Applicant: LifeScan Scotland Limited
    Inventor: Stephen MACKINTOSH
  • Publication number: 20150001096
    Abstract: Various embodiments for a method that allow for a more accurate analyte concentration with a biosensor by determining at least one physical characteristic of the sample and determining whether a sample fill condition is erroneous by monitoring the working electrodes and flagging an error if the signal outputs of the working electrodes do not meet certain thresholds.
    Type: Application
    Filed: June 27, 2013
    Publication date: January 1, 2015
    Inventor: Stephen MACKINTOSH
  • Publication number: 20150001070
    Abstract: Various embodiments for methods, systems, and meters that allow for a more accurate analyte concentration with a biosensor by determining at least one physical characteristic of the sample and determining whether at least one output transient signal of the biosensor is erroneous by monitoring the biosensor and flagging an error if the signal outputs of the biosensor do not meet certain criteria.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventor: Stephen MACKINTOSH
  • Publication number: 20140083868
    Abstract: Described are methods and systems to apply a plurality of test voltages to the test strip and measure a current transient output resulting from an electrochemical reaction in a test chamber of the test strip so that a glucose concentration can be determined that account for hematocrits in both typical subjects and neonates.
    Type: Application
    Filed: September 24, 2012
    Publication date: March 27, 2014
    Applicant: Cilag GmbH International
    Inventors: Anna ZVIKHACHEVSKAYA, Stephen Mackintosh, Adam Craggs
  • Patent number: 8545693
    Abstract: Described and illustrated herein are systems and exemplary methods of operating a multianalyte measurement system having a meter and a test strip. In one embodiment, the method may be achieved by applying a test voltage between a reference electrode and a first working electrode; measuring a first test current, a second test current and a third test current at the working electrode with the meter after a blood sample containing an analyte is applied to the test strip; estimating a hematocrit-corrected analyte concentration from the first, second and third test currents; and displaying the hematocrit-corrected analyte concentration.
    Type: Grant
    Filed: September 3, 2010
    Date of Patent: October 1, 2013
    Inventors: David McColl, Adam Craggs, Stephen MacKintosh, Steve Blythe, Marco Cardosi
  • Publication number: 20130217053
    Abstract: Described and illustrated herein are systems and exemplary methods of operating an analyte measurement system having a meter and a test strip. The methods and systems describe herein allow for trapping various errors during calculation of the analyte due to variations in the structure and materials making up the test strip and ambient temperatures.
    Type: Application
    Filed: September 28, 2011
    Publication date: August 22, 2013
    Applicant: LifeScan Scotland Limited
    Inventors: Stephen Mackintosh, David McColl
  • Publication number: 20130118920
    Abstract: Methods for determining a glucose concentration in a control solution with temperature correction that is more accurate than before with the devices and systems used in conjunction with the same, are provided herein.
    Type: Application
    Filed: August 1, 2011
    Publication date: May 16, 2013
    Inventors: Adam Craggs, Stephen Mackintosh, Jamie Rodgers
  • Publication number: 20120048746
    Abstract: An analyte test strip for use with a test meter includes a first insulating layer, a first electrically conductive layer disposed on the first insulating layer, a second insulating layer disposed above the first insulating layer, and a patterned spacer layer, positioned between the first insulating layer and the first electrically conductive layer, that defines a sample-receiving chamber. Moreover, the electrically conductive layer includes an electrode portion that is divided into a first electrode sub-portion and a second electrode sub-portion. The electrically conductive layer also includes (i) a first electrical contact pad in electrical communication with the first electrode sub-portion and configured to communicate an electrical response of the first electrical sub-portion to the test meter, and (ii) a second electrical contact pad in electrical communication with the second electrode sub-portion and configured to communicate an electrical response of the second electrical sub-portion to the test meter.
    Type: Application
    Filed: August 30, 2010
    Publication date: March 1, 2012
    Applicant: Cilag GmbH International
    Inventors: Stephen Patrick BLYTHE, Leanne Mills, Stephen Mackintosh
  • Publication number: 20110073494
    Abstract: Described and illustrated herein are systems and exemplary methods of operating a multianalyte measurement system having a meter and a test strip. In one embodiment, the method may be achieved by applying a test voltage between a reference electrode and a first working electrode; measuring a first test current, a second test current and a third test current at the working electrode with the meter after a blood sample containing an analyte is applied to the test strip; estimating a hematocrit-corrected analyte concentration from the first, second and third test currents; and displaying the hematocrit-corrected analyte concentration.
    Type: Application
    Filed: September 3, 2010
    Publication date: March 31, 2011
    Inventors: David MCCOLL, Adam Craggs, Stephen MacKintosh, Steve Blythe, Marco Cardosi