Patents by Inventor Nigel Surridge
Nigel Surridge 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: 10809221Abstract: Methods are disclosed for measuring an analyte concentration in a fluidic sample. Such methods further allow one to correct and/or compensate for confounding variables such as hematocrit (Hct), temperature or both before providing an analyte concentration. The measurement methods utilize information obtained from test sequences having at least one AC block and at least one pulsed DC block, where pulsed DC block includes at least one recovery potential, and where a closed circuit condition of the electrode system is maintained during the DC block. Also disclosed are devices, apparatuses and systems incorporating the various measurement methods.Type: GrantFiled: November 6, 2018Date of Patent: October 20, 2020Assignee: Roche Diabetes Care, Inc.Inventors: Terry A. Beaty, Scott E. Carpenter, Zheng Zheng Pan, Nigel A. Surridge
-
Patent number: 10359390Abstract: A method is disclosed for determining analyte concentration that includes applying a first electrical potential excitation pulse to a body fluid sample in an analyte sensor, and a first current response of the body fluid sample to the first pulse is measured. A second excitation pulse is applied to the body fluid sample in the analyte sensor, and a second current response of the body fluid sample to the second pulse is measured. An analyte level in the body fluid sample is determined by compensating for sources of error based on the first current response to the first pulse.Type: GrantFiled: June 18, 2013Date of Patent: July 23, 2019Assignee: ROCHE DIABETES CARE, INC.Inventors: David W. Burke, Michael Marquant, Nigel A. Surridge
-
Publication number: 20190204258Abstract: Methods are disclosed for measuring an analyte concentration in a fluidic sample. Such methods further allow one to correct and/or compensate for confounding variables such as hematocrit (Hct), temperature or both before providing an analyte concentration. The measurement methods utilize information obtained from test sequences having at least one AC block and at least one pulsed DC block, where pulsed DC block includes at least one recovery potential, and where a closed circuit condition of the electrode system is maintained during the DC block. Also disclosed are devices, apparatuses and systems incorporating the various measurement methods.Type: ApplicationFiled: November 6, 2018Publication date: July 4, 2019Applicant: Roche Diabetes Care, Inc.Inventors: Terry A. Beaty, Scott E. Carpenter, Zheng Zheng Pan, Nigel A. Surridge
-
Patent number: 10119931Abstract: Methods are disclosed for measuring an analyte concentration in a fluidic sample. Such methods further allow one to correct and/or compensate for confounding variables such as hematocrit (Hct), temperature or both before providing an analyte concentration. The measurement methods utilize information obtained from test sequences having at least one AC block and at least one pulsed DC block, where pulsed DC block includes at least one recovery potential, and where a closed circuit condition of the electrode system is maintained during the DC block. Also disclosed are devices, apparatuses and systems incorporating the various measurement methods.Type: GrantFiled: September 11, 2015Date of Patent: November 6, 2018Assignee: Roche Diabetes Care, Inc.Inventors: Terry A. Beaty, Jr., Scott E. Carpenter, Zheng Zheng Pan, Nigel A. Surridge
-
Publication number: 20160003764Abstract: Methods are disclosed for measuring an analyte concentration in a fluidic sample. Such methods further allow one to correct and/or compensate for confounding variables such as hematocrit (Hct), temperature or both before providing an analyte concentration. The measurement methods utilize information obtained from test sequences having at least one AC block and at least one pulsed DC block, where pulsed DC block includes at least one recovery potential, and where a closed circuit condition of the electrode system is maintained during the DC block. Also disclosed are devices, apparatuses and systems incorporating the various measurement methods.Type: ApplicationFiled: September 11, 2015Publication date: January 7, 2016Applicant: Roche Diabetes Care, Inc.Inventors: Terry A. Beaty, JR., Scott E. Carpenter, Zheng Zheng Pan, Nigel A. Surridge
-
Publication number: 20150095042Abstract: A blood glucose (bG) measurement engine selectively measures bG levels in blood samples input to a handheld diabetes management device. A computer readable medium includes code executed by a processor to: identify a period of N days, the period including the current date and N?1 days immediately prior to the current date, wherein N is an integer greater than 6; determine a total number of the N days during which the patient input at least two blood samples; and, when the total number of the N days is greater than M, M being an integer greater than zero and less than or equal to N: calculate a value based on the bG levels of blood samples input during the period; based on the value, classify the patient as having a first, second, or third risk of being hypoglycemic in the future.Type: ApplicationFiled: September 27, 2013Publication date: April 2, 2015Applicant: Roche Diagnostics Operations, Inc.Inventors: Timothy N. Aykroyd, Amy C. Day, Paul J. Galley, Sebastiaan la Bastide, Christen A. Rees, Nigel A. Surridge
-
Patent number: 8849458Abstract: A collection device with a selective display of test results and method thereof are disclosed. A structured collection procedure defining data collection times and the associated context of the collection also defines what information regarding the results of the collection may be viewable by a user performing the structured collection procedure on the device. In this manner, the patient can be monitored according to the structured collection procedure while preventing the patient from modifying his or her behavior based on collection results.Type: GrantFiled: June 18, 2010Date of Patent: September 30, 2014Assignee: Roche Diagnostics Operations, Inc.Inventors: Stefan Weinert, Matthias Essenpreis, Nigel Surridge, Remmert Laan
-
Patent number: 8775095Abstract: Methods for decentralized monitoring of a progression of a diabetic state of a patient include contemporaneously obtaining an initial set of venous blood samples and an initial set of capillary blood samples after a standardized metabolic challenge from the patient in a centralized setting, wherein the diabetic state is diagnosed using the initial set of venous blood samples and a first test baseline is established by correlating the initial set of capillary blood samples with the initial set of venous blood samples, implementing a therapy, performing decentralized testing after reaching a target event, wherein a status test is obtained from a status set of capillary blood samples obtained from the patient after a subsequent standardized metabolic challenge, and comparing the status test with the first test baseline to determine an effectiveness of the therapy.Type: GrantFiled: June 18, 2010Date of Patent: July 8, 2014Assignee: Roche Diagnostics Operations, Inc.Inventors: Paul Douglas Walling, Nigel Surridge
-
Patent number: 8663442Abstract: A method of measuring an analyte in a biological fluid comprises applying an excitation signal having a DC component and an AC component. The AC and DC responses are measured; a corrected DC response is determined using the AC response; and a concentration of the analyte is determined based upon the corrected DC response. Other methods and devices are disclosed.Type: GrantFiled: October 20, 2008Date of Patent: March 4, 2014Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.Inventors: David W. Burke, Nigel A. Surridge, Henning Groll
-
Publication number: 20130292266Abstract: A system for testing for analytes in a sample of biological fluid includes a test strip that defines a cavity for receiving the sample. At least two sets of electrodes are adjacent the sample cavity, including one for measuring one property of the sample, and another for measuring one or more other properties of the sample, such as temperature and/or the presence or magnitude of confounding variables. The measurements are combined to yield the desired result. At least one set of working and counter electrodes each have a plurality of elongated “fingers” interdigitated with those of the other electrode in the set. The gaps between fingers can be quite small, so that the two electrode sets together can operate in a small measurement volume of sample. Additional electrodes can be included that measure the presence or sufficiency of the sample, and additional traces on the strip can act as configuration identifiers.Type: ApplicationFiled: July 8, 2013Publication date: November 7, 2013Inventors: Nigel A. Surridge, P. Douglas Walling, Melani Sullivan, Vladimir Svetnik, Brian S. Hill
-
Publication number: 20130277234Abstract: A method is disclosed for determining analyte concentration that includes applying a first electrical potential excitation pulse to a body fluid sample in an analyte sensor, and a first current response of the body fluid sample to the first pulse is measured. A second excitation pulse is applied to the body fluid sample in the analyte sensor, and a second current response of the body fluid sample to the second pulse is measured. An analyte level in the body fluid sample is determined by compensating for sources of error based on the first current response to the first pulse.Type: ApplicationFiled: June 18, 2013Publication date: October 24, 2013Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.Inventors: David W. Burke, Michael Marquant, Nigel A. Surridge
-
Patent number: 8551308Abstract: An electrochemical biosensor with electrode elements that possess smooth, high-quality edges. These smooth edges define gaps between electrodes, electrode traces and contact pads. Due to the remarkable edge smoothness achieved with the present invention, the gaps can be quite small, which provides marked advantages in terms of test accuracy, speed and the number of different functionalities that can be packed into a single biosensor. Further, the present invention provides a novel biosensor production method in which entire electrode patterns for the inventive biosensors can be formed all at one, in nanoseconds—without regard to the complexity of the electrode patterns or the amount of conductive material that must be ablated to form them.Type: GrantFiled: September 25, 2008Date of Patent: October 8, 2013Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.Inventors: Raghbir S. Bhullar, Eric R. Diebold, Brian S. Hill, Nigel Surridge, Paul Douglas Walling
-
Patent number: 8454904Abstract: A biosensor container comprising a housing defining an internal glucose test strip compartment. The housing has an engagement portion for retaining a detachable means for storing data, and the means for storing data has data stored thereon specific to a batch of glucose test strips. At least one of the housing and the means for storing data includes at least one data reading element that is externally accessible when the means for storing data is retained by the engagement portion of the housing. The container includes various fail safe features to prevent mishandling and insure the user obtains the correct results. The housing includes means for connecting to the bG meter only when the means for storing data is retained by the housing. The housing further includes means for dispensing glucose test strips only when the housing is in either of an attached-to meter mode or a stand-alone mode.Type: GrantFiled: July 29, 2008Date of Patent: June 4, 2013Assignee: Roche Diagnostics Operations, Inc.Inventors: Nigel Surridge, Abner Joseph, Frank Chan, Martin Gerber, Matt Sauers
-
Patent number: 8287703Abstract: An electrochemical biosensor with electrode elements that possess smooth, high-quality edges. These smooth edges define gaps between electrodes, electrode traces and contact pads. Due to the remarkable edge smoothness achieved with the present invention, the gaps can be quite small, which provides marked advantages in terms of test accuracy, speed and the number of different functionalities that can be packed into a single biosensor. Further, the present invention provides a novel biosensor production method in which entire electrode patterns for the inventive biosensors can be formed all at one, in nanoseconds—without regard to the complexity of the electrode patterns or the amount of conductive material that must be ablated to form them.Type: GrantFiled: September 25, 2008Date of Patent: October 16, 2012Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.Inventors: Raghbir S. Bhullar, Eric R. Diebold, Brian S. Hill, Nigel Surridge, Paul Douglas Walling
-
Patent number: 8222044Abstract: A test strip with a sample receiving chamber having a novel flared portion that terminates in a sample receiving opening. The flared portion provides a reservoir from which sample fluid can be drawn into the capillary or sample receiving chamber. The wider opening provided by the present invention is easier to “target” with a sample fluid. In preferred embodiments, the hydrophilic reagent layer extends to the dosing end or side of the test strip and further promotes wicking of the sample into the sample receiving chamber and thus reduces dose hesitation. In other preferred embodiments, a tapered dosing end is provided on the test strip in combination with the flared portion, and this combination create a test strip that will draw sample fluid into the sample receiving chamber regardless of where along the dosing edge of the test strip the fluid sample makes contact.Type: GrantFiled: November 16, 2011Date of Patent: July 17, 2012Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.Inventors: Raghbir S. Bhullar, Nigel Surridge, Tom Funke, Paul Douglas Walling, Randall K. Riggles
-
Publication number: 20120055626Abstract: A test strip with a sample receiving chamber having a novel flared portion that terminates in a sample receiving opening. The flared portion provides a reservoir from which sample fluid can be drawn into the capillary or sample receiving chamber. The wider opening provided by the present invention is easier to “target” with a sample fluid. In preferred embodiments, the hydrophilic reagent layer extends to the dosing end or side of the test strip and further promotes wicking of the sample into the sample receiving chamber and thus reduces dose hesitation. In other preferred embodiments, a tapered dosing end is provided on the test strip in combination with the flared portion, and this combination create a test strip that will draw sample fluid into the sample receiving chamber regardless of where along the dosing edge of the test strip the fluid sample makes contact.Type: ApplicationFiled: November 16, 2011Publication date: March 8, 2012Inventors: Raghbir S. Bhullar, Nigel Surridge, Tom Funke, Paul Douglas Walling, Randall K. Riggles
-
Publication number: 20110313673Abstract: Methods for decentralized monitoring of a progression of a diabetic state of a patient include contemporaneously obtaining an initial set of venous blood samples and an initial set of capillary blood samples after a standardized metabolic challenge from the patient in a centralized setting, wherein the diabetic state is diagnosed using the initial set of venous blood samples and a first test baseline is established by correlating the initial set of capillary blood samples with the initial set of venous blood samples, implementing a therapy, performing decentralized testing after reaching a target event, wherein a status test is obtained from a status set of capillary blood samples obtained from the patient after a subsequent standardized metabolic challenge, and comparing the status test with the first test baseline to determine an effectiveness of the therapy.Type: ApplicationFiled: June 18, 2010Publication date: December 22, 2011Applicant: ROCHE DIAGNOSTICS OPERATIONS, INC.Inventors: Paul Douglas Walling, Nigel Surridge
-
Patent number: 8071030Abstract: A test strip with a sample receiving chamber having a novel flared portion that terminates in a sample receiving opening. The flared portion provides a reservoir from which sample fluid can be drawn into the capillary or sample receiving chamber. The wider opening provided by the present invention is easier to “target” with a sample fluid. In preferred embodiments, the hydrophilic reagent layer extends to the dosing end or side of the test strip and further promotes wicking of the sample into the sample receiving chamber and thus reduces dose hesitation. In other preferred embodiments, a tapered dosing end is provided on the test strip in combination with the flared portion, and this combination create a test strip that will draw sample fluid into the sample receiving chamber regardless of where along the dosing edge of the test strip the fluid sample makes contact.Type: GrantFiled: June 18, 2004Date of Patent: December 6, 2011Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.Inventors: Raghbir S. Bhullar, Nigel Surridge, Tom Funke, Paul Douglas Walling, Randall K. Riggles
-
Patent number: RE42953Abstract: An electrochemical biosensor test strip with four new features. The test strip includes an indentation for tactile feel as to the location of the strips sample application port. The sample application port leads to a capillary test chamber, which includes a test reagent. The wet reagent includes from about 0.2% by weight to about 2% by weight polyethylene oxide from about 100 kilodaltons to about 900 kilodaltons mean molecular weight, which makes the dried reagent more hydrophilic and sturdier to strip processing steps, such as mechanical punching, and to mechanical manipulation by the test strip user. The roof of the capillary test chamber includes a transparent or translucent window which operates as a “fill to here” line, thereby identifying when enough test sample (a liquid sample, such as blood) has been added to the test chamber to accurately perform a test. The test strip may further include a notch located at the sample application port. The notch reduces a phenomenon called “dose hesitation”.Type: GrantFiled: December 7, 2001Date of Patent: November 22, 2011Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.Inventors: William F. Crismore, Nigel A. Surridge, Richard J. Bodensteiner, Eric R. Diebold, R. Dale Delk, David W. Burke, Jiaxiong Jason Ho
-
Patent number: RE43815Abstract: An electrochemical biosensor test strip with four new features. The test strip includes an indentation for tactile feel as to the location of the strips sample application port. The sample application port leads to a capillary test chamber, which includes a test reagent. The wet reagent includes from about 0.2% by weight to about 2% by weight polyethylene oxide from about 100 kilodaltons to about 900 kilodaltons mean molecular weight, which makes the dried reagent more hydrophilic and sturdier to strip processing steps, such as mechanical punching, and to mechanical manipulation by the test strip user. The roof of the capillary test chamber includes a transparent or translucent window which operates as a “fill to here” line, thereby identifying when enough test sample (a liquid sample, such as blood) has been added to the test chamber to accurately perform a test. The test strip may further include a notch located at the sample application port. The notch reduces a phenomenon called “dose hesitation”.Type: GrantFiled: November 21, 2011Date of Patent: November 20, 2012Assignees: Roche Diagnostics Operations, Inc., Roche Operations Ltd.Inventors: William F. Crismore, Nigel A. Surridge, Daniel R. McMinn