Patents Assigned to Lifescan Scotland Limited
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Patent number: 8460537Abstract: A method for determining an analyte concentration in blood is described that reduces the effects of hematocrit using a test strip attached to a test meter. The test strip includes a working electrode and a reference electrode. The test meter applies a test voltage between the working electrode and the reference electrode. After a user applies a blood sample containing an analyte onto the test strip, the test meter measures a plurality of test currents for a test time interval.Type: GrantFiled: September 3, 2009Date of Patent: June 11, 2013Assignee: LifeScan Scotland LimitedInventors: Stephen Patrick Blythe, Marco F Cardosi, Leanne Mills, Manuel Alvarez-Icaza, Emma Vanessa Jayne Day, Richard Michael Day, Christopher Philip Leach
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Patent number: 8454533Abstract: Described and illustrated herein is an exemplary lancing device. The exemplary lancing device comprises: a first housing having spaced apart proximal and distal ends disposed along a longitudinal axis; a chassis disposed in the first housing in a fixed relationship with the first housing; a movable member disposed in the chassis and configured for movement along the longitudinal axis and in the first housing; a lancet coupled to the movable member; and a lancet depth adjustment member retained by both the first and chassis so that the lancet depth adjustment member is rotatable relative to both housings to provide for a plurality of stop surfaces to the movable member. Other embodiments and methods are also described.Type: GrantFiled: May 5, 2009Date of Patent: June 4, 2013Assignee: LifeScan Scotland LimitedInventors: Allan James Faulkner, Nicholas Foley, David Colin Crosland, Matthew James Young, Paul Trickett
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Publication number: 20130095510Abstract: Described and illustrated herein are systems and exemplary methods of operating an analyte measurement system having a meter and a test strip. In one embodiment, the method may be achieved by applying a first test voltage between a reference electrode and a second working electrode and applying a second test voltage between the reference electrode and a first working electrode; measuring a first test current, a second test current, a third test current and a fourth test current at the second working electrode after a blood sample containing an analyte is applied to the test strip; measuring a fifth test current at the first working electrode; estimating a hematocrit-corrected analyte concentration from the first, second, third, fourth and fifth test currents; and annunciating the hematocrit-corrected analyte concentration.Type: ApplicationFiled: March 30, 2011Publication date: April 18, 2013Applicant: LifeScan Scotland LimitedInventors: Michael Malecha, Adam Craggs
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Patent number: 8388821Abstract: Description is provided herein for an embodiment of a method determining a hematocrit-corrected glucose concentration. The exemplary method includes providing a test strip having a reference electrode and a working electrode, wherein the working electrode includes a plurality of microelectrodes and is coated with at least an enzyme and a mediator.Type: GrantFiled: October 5, 2007Date of Patent: March 5, 2013Assignee: LifeScan Scotland LimitedInventors: Stephen Patrick Blythe, Marco F. Cardosi, Andrew Gill, Leanne Mills, Christopher Philip Leach
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Publication number: 20130037421Abstract: A method and system is provided to allow for determination of substantially Hematocrit independent analyte concentration. In one example, an analyte measurement system is provided that includes a test strip and a test meter. The test strip includes a reference electrode and a working electrode, in which the working electrode is coated with a reagent layer. The test meter includes an electronic circuit and a signal processor. The electronic circuit applies a plurality of voltages to the reference electrode and the working electrode over respective durations. The signal processor is configured to determine a substantially hematocrit-independent concentration of the analyte from a plurality of current values as measured by the processor upon application of a plurality of test voltages to the reference and working electrodes over a plurality of durations interspersed with rest voltages lower than the test voltages being applied to the electrodes.Type: ApplicationFiled: October 10, 2012Publication date: February 14, 2013Applicant: LifeScan Scotland LimitedInventor: LifeScan Scotland Limited
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Patent number: 8348843Abstract: A meter is provided that includes an improved user interface that enables the user to take a specific action, leading them directly to data input options. Such a user interface could be used to input first selected information, such as whether a test was premeal or postmeal, immediately after receiving a result. Optionally, the user interface may include the ability to add an additional comment after inputting the first selected information. Provision of such a user interface would facilitate simpler capture of the first selected information each time the user performs a test, leading to an enhanced understanding of a patient's level of glycemic control. Designing a user interface to enable first selected information to be entered by a user directly after receiving a result is more likely to engage a patient by making it easy and simple to enter important information. This may enable capture of the information thought to be most pertinent e.g.Type: GrantFiled: July 7, 2011Date of Patent: January 8, 2013Assignee: LifeScan Scotland LimitedInventors: Stanley Alan Young, David William Taylor, Allan Orr, Cheryl Neary, Nicola Canning, Marc Daniel Stern
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Patent number: 8343074Abstract: Devices for determining the concentration of an analyte in a fluid are provided. Also provided are systems and kits for use in practicing the subject methods.Type: GrantFiled: June 30, 2004Date of Patent: January 1, 2013Assignee: LifeScan Scotland LimitedInventors: Klaus Peter Weidenhaupt, James Moffat, Sebastian Böhm
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Patent number: 8328719Abstract: A meter is provided that includes an improved user interface that enables the user to take a specific action, leading them directly to data input options. Such a user interface could be used to input first selected information, such as whether a test was premeal or postmeal, immediately after receiving a result. Optionally, the user interface may include the ability to add an additional comment after inputting the first selected information. Provision of such a user interface would facilitate simpler capture of the first selected information each time the user performs a test, leading to an enhanced understanding of a patient's level of glycemic control. Designing a user interface to enable first selected information to be entered by a user directly after receiving a result is more likely to engage a patient by making it easy and simple to enter important information. This may enable capture of the information thought to be most pertinent e.g.Type: GrantFiled: July 7, 2011Date of Patent: December 11, 2012Assignee: LifeScan Scotland LimitedInventors: Stanley Alan Young, David William Taylor, Allan Orr, Cheryl Neary, Nicola Canning, Marc Daniel Stern
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Patent number: 8323467Abstract: A dual chamber, multi-analyte test strip has a first insulating layer, a first electrically conductive layer, with a first working electrode, disposed on the first insulating layer and a first patterned spacer layer positioned above the first electrically conductive layer. The first patterned spacer layer has a first sample-receiving chamber, with first and second end openings, defined therein that overlies the first working electrode. The test strip also includes a first counter/reference electrode layer that is exposed to the first sample receiving chamber and is in an opposing relationship to the first working electrode. The test strip further includes a counter/reference insulating layer disposed over the first counter/reference electrode layer and a second counter/reference electrode layer disposed on the counter/reference substrate. Also included in the test strip is a second patterned spacer layer that is positioned above the second counter/reference electrode layer.Type: GrantFiled: October 27, 2009Date of Patent: December 4, 2012Assignee: LifeScan Scotland LimitedInventors: Gavin MacFie, Graeme Webster, Marco F. Cardosi, Christopher Philip Leach, Steven Setford, Selwayan Saini
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Publication number: 20120285837Abstract: An electrochemical-based analytical test strip for the determination of an analyte (e.g., glucose) in a bodily fluid sample (such as a whole blood sample) includes an electrically insulating base layer and a patterned conductor layer (for example, a gold patterned conductor layer) disposed over the electrically-insulating layer. The patterned conductor layer includes at least one electrode with the electrode having electrochemically inert areas and an electrochemically active area(s). Moreover, the electrochemically inert areas and electrochemically active area(s) are of a predetermined size and a predetermined distribution such that electrochemical response of the electrode during use of the electrochemical-based analytical test strip is essentially equivalent to a predetermined electrochemical response.Type: ApplicationFiled: July 20, 2012Publication date: November 15, 2012Applicant: LifeScan Scotland LimitedInventors: Gavin MACFIE, Craig Redpath, James lain Rodgers, Neil Whitehead
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Patent number: 8293096Abstract: A method and system is provided to allow for determination of substantially Hematocrit independent analyte concentration. In one example, an analyte measurement system is provided that includes a test strip and a test meter. The test strip includes a reference electrode and a working electrode, in which the working electrode is coated with a reagent layer. The test meter includes an electronic circuit and a signal processor. The electronic circuit applies a plurality of voltages to the reference electrode and the working electrode over respective durations. The signal processor is configured to determine a substantially hematocrit-independent concentration of the analyte from a plurality of current values as measured by the processor upon application of a plurality of test voltages to the reference and working electrodes over a plurality of durations interspersed with rest voltages lower than the test voltages being applied to the electrodes.Type: GrantFiled: January 22, 2010Date of Patent: October 23, 2012Assignee: LifeScan Scotland LimitedInventors: Marco F. Cardosi, Stephen Patrick Blythe, Matthew Finch, Arlene Thompson, Nina Antonia Naylor, Eric Jason Bailey, Michael Patrick Dolan, Gretchen Anderson, Lorraine Comstock, Mary McEvoy, Thomas Sutton, Richard Michael Day, Leanne Mills, Emma Vanessa Jayne Day, Christopher Philip Leach
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Publication number: 20120199497Abstract: An electrochemical-based analytical test strip for the determination of an analyte (such as glucose) in a bodily fluid sample (e.g., a whole blood sample) includes a substrate, at least one working electrode disposed on the substrate, a sample-soluble enzymatic reagent layer disposed above the working electrode, a diffusion-controlling layer (DCL) disposed between the at least one working electrode and the sample-soluble enzymatic reagent layer; and a sample-receiving chamber. In addition, the sample-soluble enzymatic reagent layer is configured and constituted for operable solubility in a bodily fluid sample applied to the electrochemical-based analytical test strip and received in the sample-receiving chamber and for electrochemical enzymatic reaction with an analyte in the bodily fluid sample.Type: ApplicationFiled: February 7, 2011Publication date: August 9, 2012Applicant: LifeScan Scotland LimitedInventors: Zuifang Liu, Marco F. Cardosi, Christopher Philip Leach, Scott Sloss
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Publication number: 20110290668Abstract: An electrochemical-based analytical test strip for the determination of an analyte (such as glucose) in a bodily fluid sample (for example, whole blood) includes an electrically insulating base layer, a patterned conductor layer disposed over the electrically-insulating layer, and a patterned insulation layer, with an electrode exposure window therethrough, disposed over the patterned conductor layer. The patterned conductive layer of the electrochemical-based analytical test strip includes at least one working electrode and a counter/reference electrode. In addition, at least a portion of the electrode exposure window is configured to expose a working electrode exposed portion and a counter/reference electrode exposed portion, with the working electrode exposed portion being rectangular in shape and the counter/reference electrode exposed portion being one of a crossroads shape and an at least six-sided portion of a crossroads shape.Type: ApplicationFiled: May 27, 2010Publication date: December 1, 2011Applicant: LifeScan Scotland LimitedInventors: James MOFFAT, Lynsey Whyte, Robert Marshall, Steven Setford
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Publication number: 20110284393Abstract: An electrochemical-based analytical test strip for the determination of an analyte (e.g., glucose) in a bodily fluid sample (such as a whole blood sample) includes an electrically insulating base layer and a patterned conductor layer (for example, a gold patterned conductor layer) disposed over the electrically-insulating layer. The patterned conductor layer includes at least one electrode with the electrode having electrochemically inert areas and an electrochemically active area(s). Moreover, the electrochemically inert areas and electrochemically active area(s) are of a predetermined size and a predetermined distribution such that electrochemical response of the electrode during use of the electrochemical-based analytical test strip is essentially equivalent to a predetermined electrochemical response.Type: ApplicationFiled: May 19, 2010Publication date: November 24, 2011Applicant: LifeScan Scotland LimitedInventors: Gavin MACFIE, Craig Redpath, James Iain Rodgers, Neil Whitehead
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Patent number: 8057753Abstract: A test strip ejection mechanism, for use with a test strip receiving port and a test strip, includes a framework, an elongated shape memory alloy (SMA) strip (e.g., a SMA wire), a slider, and a heating module. The SMA strip has first and second ends that are attached to the framework and exhibits a solid state transition temperature. The slider is configured to travel along the framework. The heating module is configured to heat the SMA strip from a temperature below the solid state transition temperature to a temperature above the solid state transition temperature. Moreover, the SMA strip and slider are configured such that the slider travels along the framework under an applied force exerted on the slider by the SMA strip as the shape memory strip is heated from a temperature below the solid state transition temperature to a temperature above the solid state temperature by the heating module.Type: GrantFiled: February 4, 2010Date of Patent: November 15, 2011Assignee: LifeScan Scotland LimitedInventors: Marco DeAngeli, Luca Valsecchi
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Publication number: 20110270063Abstract: A meter is provided that includes an improved user interface that enables the user to take a specific action, leading them directly to data input options. Such a user interface could be used to input first selected information, such as whether a test was premeal or postmeal, immediately after receiving a result. Optionally, the user interface may include the ability to add an additional comment after inputting the first selected information. Provision of such a user interface would facilitate simpler capture of the first selected information each time the user performs a test, leading to an enhanced understanding of a patient's level of glycemic control. Designing a user interface to enable first selected information to be entered by a user directly after receiving a result is more likely to engage a patient by making it easy and simple to enter important information. This may enable capture of the information thought to be most pertinent e.g.Type: ApplicationFiled: July 7, 2011Publication date: November 3, 2011Applicant: LifeScan Scotland LimitedInventors: Stanley Alan YOUNG, David William TAYLOR, Allan ORR, Cheryl NEARY, Nicola CANNING, Marc Daniel STERN
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Publication number: 20110263959Abstract: A meter is provided that includes an improved user interface that enables the user to take a specific action, leading them directly to data input options. Such a user interface could be used to input first selected information, such as whether a test was premeal or postmeal, immediately after receiving a result. Optionally, the user interface may include the ability to add an additional comment after inputting the first selected information. Provision of such a user interface would facilitate simpler capture of the first selected information each time the user performs a test, leading to an enhanced understanding of a patient's level of glycemic control. Designing a user interface to enable first selected information to be entered by a user directly after receiving a result is more likely to engage a patient by making it easy and simple to enter important information. This may enable capture of the information thought to be most pertinent e.g.Type: ApplicationFiled: July 7, 2011Publication date: October 27, 2011Applicant: LifeScan Scotland LimitedInventors: Stanley Alan YOUNG, David William Taylor, Allan Orr, Cheryl Neary, Nicola Canning, Marc Daniel Stern
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Patent number: 8025788Abstract: A method for manufacturing an enzymatic reagent ink for use in analytical test strips (such as electrochemical-based analytical test strips configured for the determination of glucose in blood) includes determining a first relationship between wetability of a representative hydrophobic silica material (e.g., a hydrophobic fumed silica material) and at least a first calibration characteristic (for example, a calibration slope) of an analytical test strip that includes an enzymatic reagent ink containing the representative hydrophobic silica material. In the method, the first relationship defines a minimum wetability that provides an acceptable first calibration characteristic.Type: GrantFiled: April 24, 2009Date of Patent: September 27, 2011Assignee: LifeScan Scotland LimitedInventors: Marco F. Cardosi, Michael O'Connell
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Patent number: D674181Type: GrantFiled: March 2, 2012Date of Patent: January 15, 2013Assignee: LifeScan Scotland LimitedInventors: Allan Faulkner, Nick Foley, Jonny Nelson, Simon Salter, Paul Trickett
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Patent number: D684491Type: GrantFiled: December 21, 2012Date of Patent: June 18, 2013Assignee: LifeScan Scotland LimitedInventors: Ivan Confield, Allan Orr, Ryan Magennis, Nick Foley, Giorgio Castellari, Maurizio Volpe, Roberto Beretta, Fabio Foleghi, Paul Trickett, James Glencross