Patents by Inventor Teppei Shinno
Teppei Shinno 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).
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Publication number: 20120037506Abstract: The present invention provides a method of electrochemically measuring a hematocrit (Hct) value using a sensor, capable of achieving excellent measurement accuracy and reliability and also provides a sensor used in the method. The method of electrochemically measuring a hematocrit (Hct) value of blood include: providing an electrode system having a working electrode (11) and a counter electrode (12), in which a redox substance is provided on the counter electrode (12) but not on the working electrode (11); supplying blood to the electrode system; applying a voltage to the electrode system in this state to cause an oxidation current or a reduction current to flow between the working electrode (11) and the counter electrode (12); detecting the oxidation current or the reduction current; and determining a Hct value based on a value of the detected current.Type: ApplicationFiled: October 24, 2011Publication date: February 16, 2012Applicant: PANASONIC CORPORATIONInventors: Masaki Fujiwara, Teppei Shinno, Shin Ikeda
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Patent number: 8088271Abstract: The present invention provides a method of electrochemically measuring a hematocrit (Hct) value using a sensor, capable of achieving excellent measurement accuracy and reliability and also provides a sensor used in the method. The method of electrochemically measuring a hematocrit (Hct) value of blood include: providing an electrode system having a working electrode (11) and a counter electrode (12), in which a redox substance is provided on the counter electrode (12) but not on the working electrode (11); supplying blood to the electrode system; applying a voltage to the electrode system in this state to cause an oxidation current or a reduction current to flow between the working electrode (11) and the counter electrode (12); detecting the oxidation current or the reduction current; and determining a Hct value based on a value of the detected current.Type: GrantFiled: December 3, 2004Date of Patent: January 3, 2012Assignee: Panasonic CorporationInventors: Masaki Fujiwara, Teppei Shinno, Shin Ikeda
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Publication number: 20110198223Abstract: The present invention provides a method of measuring a component in blood, by which the amounts of blood cells and an interfering substance can be measured with high accuracy and high reliability and the amount of the component can be corrected accurately based on the amounts of the blood cells and the interfering substance. In a sensor for measuring a blood component, a first working electrode 13 measures a current that flows during a redox reaction of a blood component, a second working electrode 17 measures the amount of blood cells, and a third working electrode 12 measures the amount of an interfering substance. Next, based on the measurement results, the amount of the blood component to be measured is corrected. Thus, more accurate and precise measurement of the amount of the blood component can be realized.Type: ApplicationFiled: April 26, 2011Publication date: August 18, 2011Applicant: PANASONIC CORPORATIONInventors: Masaki FUJIWARA, Teppei SHINNO, Shin IKEDA
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Patent number: 7955492Abstract: The present invention provides a method of measuring a component in blood, by which the amounts of blood cells and an interfering substance can be measured with high accuracy and high reliability and the amount of the component can be corrected accurately based on the amounts of the blood cells and the interfering substance. In a sensor for measuring a blood component, a first working electrode 13 measures a current that flows during a redox reaction of a blood component, a second working electrode 17 measures the amount of blood cells, and a third working electrode 12 measures the amount of an interfering substance. Next, based on the measurement results, the amount of the blood component to be measured is corrected. Thus, more accurate and precise measurement of the amount of the blood component can be realized.Type: GrantFiled: April 18, 2005Date of Patent: June 7, 2011Assignee: Panasonic CorporationInventors: Masaki Fujiwara, Teppei Shinno, Shin Ikeda
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Publication number: 20100283488Abstract: A sample measurement device (110), in which a biosensor (30) having an electrode is mounted, voltage is applied to the electrode, and the concentration of a specific component in a sample deposited on the biosensor (30) is measured, comprises a voltage source (19) configured to apply voltage to the electrode, a time measurement component (22), and a controller (18) configured to control the voltage to be applied and measure the concentration of the specific component. The time measurement component (22) measures a detection time, which is the length of time between the mounting of the biosensor (30) and the deposition of a sample on the biosensor (30). The controller (18) changes a set value for measuring the concentration of a specific component according to the detection time. Consequently, measurement accuracy can be improved regardless of the temperature of the biosensor (30).Type: ApplicationFiled: March 27, 2009Publication date: November 11, 2010Inventors: Toshifumi Nakamura, Teppei Shinno
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Publication number: 20100270177Abstract: The present invention provides a method of measuring a component in blood, by which an amount of the component can be corrected accurately by measuring a hematocrit (Hct) value of the blood with high accuracy and high reliability and also provides a sensor used in the method. The sensor for measuring a component in blood has a first analysis portion and a second analysis portion. The first analysis portion has a first electrode system (11,12) and a reagent layer (14), and the reagent layer (14) has an oxidoreductase that acts on the component and a mediator. In the first analysis portion, the component in the blood is measured by causing a redox reaction of the component with the oxidoreductase in the presence of the mediator and detecting a redox current caused when a voltage is applied by the first electrode (11,12). The second analysis portion has a working electrode and a counter electrode, and a mediator is provided on the counter electrode but not on the working electrode.Type: ApplicationFiled: July 1, 2010Publication date: October 28, 2010Applicant: PANASONIC CORPORATIONInventors: Masaki FUJIWARA, Teppei SHINNO, Shin IKEDA
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Patent number: 7641785Abstract: A sensor for blood component analysis that can correct the effect of a hematocrit easily is provided. The sensor includes an analysis portion including a working electrode, a counter electrode, and a reagent portion. The reagent portion includes an oxidoreductase that reacts with the blood component and a mediator, and the blood component is measured by causing a redox reaction between the blood component and the oxidoreductase in the presence of the mediator and detecting a redox current generated by the redox reaction by the working electrode and the counter electrode. In this sensor, the reagent portion further includes a hemolyzing agent (e.g., sodium cholate) for hemolyzing an erythrocyte, and when detecting the redox current, the erythrocyte is hemolyzed with the hemolyzing agent so as to cause hemoglobin released to an outside of the erythrocyte to react with the mediator and a current generated by this reaction also is detected to correct an effect of a hematocrit.Type: GrantFiled: September 28, 2004Date of Patent: January 5, 2010Assignee: Panasonic CorporationInventors: Teppei Shinno, Shin Ikeda
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Publication number: 20090321281Abstract: A sensor for blood component analysis that can correct the effect of a hematocrit easily is provided. The sensor includes an analysis portion including a working electrode, a counter electrode, and a reagent portion. The reagent portion includes an oxidoreductase that reacts with the blood component and a mediator, and the blood component is measured by causing a redox reaction between the blood component and the oxidoreductase in the presence of the mediator and detecting a redox current generated by the redox reaction by the working electrode and the counter electrode. In this sensor, the reagent portion further includes a hemolyzing agent (e.g., sodium cholate) for hemolyzing an erythrocyte, and when detecting the redox current, the erythrocyte is hemolyzed with the hemolyzing agent so as to cause hemoglobin released to an outside of the erythrocyte to react with the mediator and a current generated by this reaction also is detected to correct an effect of a hematocrit.Type: ApplicationFiled: August 19, 2009Publication date: December 31, 2009Applicant: PANASONIC CORPORATIONInventors: Teppei SHINNO, Shin IKEDA
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Publication number: 20090236237Abstract: A liquid sample measurement apparatus of the present invention is provided with a timer (122) for measuring the time from when a biosensor (30) is attached to a liquid sample measurement device (110a) which measures the concentration of a specific component in a liquid sample that is applied to the biosensor (30) to when the liquid sample is applied to the biosensor (30), and correction based on the time measured by the timer (122) is performed to the measurement result of the concentration of the specific component in the liquid sample that is applied to the biosensor (30). Thereby, the measurement precision can be enhanced with utilizing the correction algorithm in which the ambient temperature and the temperature of the biosensor itself are considered.Type: ApplicationFiled: July 4, 2007Publication date: September 24, 2009Inventors: Teppei Shinno, Yoshifumi Takahara
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Publication number: 20070138026Abstract: The present invention provides a method of measuring a component in blood, by which the amounts of blood cells and an interfering substance can be measured with high accuracy and high reliability and the amount of the component can be corrected accurately based on the amounts of the blood cells and the interfering substance. In a sensor for measuring a blood component, a first working electrode 13 measures a current that flows during a redox reaction of a blood component, a second working electrode 17 measures the amount of blood cells, and a third working electrode 12 measures the amount of an interfering substance. Next, based on the measurement results, the amount of the blood component to be measured is corrected. Thus, more accurate and precise measurement of the amount of the blood component can be realized.Type: ApplicationFiled: April 18, 2005Publication date: June 21, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Masaki Fujiwara, Teppei Shinno, Shin Ikeda
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Publication number: 20070131565Abstract: The present invention provides a method of measuring a component in blood, by which an amount of the component can be corrected accurately by measuring a hematocrit (Hct) value of the blood with high accuracy and high reliability and also provides a sensor used in the method. The sensor for measuring a component in blood has a first analysis portion and a second analysis portion. The first analysis portion has a first electrode system (11,12) and a reagent layer (14), and the reagent layer (14) has an oxidoreductase that acts on the component and a mediator. In the first analysis portion, the component in the blood is measured by causing a redox reaction of the component with the oxidoreductase in the presence of the mediator and detecting a redox current caused when a voltage is applied by the first electrode (11,12). The second analysis portion has a working electrode and a counter electrode, and a mediator is provided on the counter electrode but not on the working electrode.Type: ApplicationFiled: December 3, 2004Publication date: June 14, 2007Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masaki Fujiwara, Teppei Shinno, Shin Ikeda
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Publication number: 20070062822Abstract: The present invention provides a method of electrochemically measuring a hematocrit (Hct) value using a sensor, capable of achieving excellent measurement accuracy and reliability and also provides a sensor used in the method. The method of electrochemically measuring a hematocrit (Hct) value of blood include: providing an electrode system having a working electrode (11) and a counter electrode (12), in which a redox substance is provided on the counter electrode (12) but not on the working electrode (11); supplying blood to the electrode system; applying a voltage to the electrode system in this state to cause an oxidation current or a reduction current to flow between the working electrode (11) and the counter electrode (12); detecting the oxidation current or the reduction current; and determining a Hct value based on a value of the detected current.Type: ApplicationFiled: December 3, 2004Publication date: March 22, 2007Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masaki Fujiwara, Teppei Shinno, Shin Ikeda
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Patent number: 7083712Abstract: An analyzer (A) includes a measurer (42) for measuring an electro-physical quantity of a sample, and an acceleration measurer (43) for computing the acceleration of change of the electro-physical quantity such as a current measured by the measurer (42). The fail determination as to whether or not a predetermined condition necessary for performing analysis of the sample is satisfied is made based on the acceleration computed by the acceleration measurer (43). As a result, the fail determination in the analysis process of the sample can be performed accurately.Type: GrantFiled: November 18, 2002Date of Patent: August 1, 2006Assignees: ARKRAY, Inc., Matsushita Electric Industrial Co., Ltd.Inventors: Yoshimitsu Morita, Teppei Shinno
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Patent number: 7008525Abstract: An analyzer (A) includes a current measurer (42) for measuring the current flowing between paired electrodes (22a), (22b) when a sample is introduced to the reagent layer (23) of a sensor (2) and voltage is applied across the electrodes, while also including a processor (3) for analyzing the sample based on the current after a predetermined reference time point. The analyzer (A) further includes a fail determiner (44) which monitors the change of the current before and after the reference time point and determines that the sensor (2) is improper when the current change does not correspond to a predetermined current change.Type: GrantFiled: November 18, 2002Date of Patent: March 7, 2006Assignees: Arkray, Inc., Matsushita Electric Industrial Co., Ltd.Inventors: Yoshimitsu Morita, Yoshimi Oura, Teppei Shinno
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Publication number: 20050145490Abstract: A sensor for blood component analysis that can correct the effect of a hematocrit easily is provided. The sensor includes an analysis portion including a working electrode, a counter electrode, and a reagent portion. The reagent portion includes an oxidoreductase that reacts with the blood component and a mediator, and the blood component is measured by causing a redox reaction between the blood component and the oxidoreductase in the presence of the mediator and detecting a redox current generated by the redox reaction by the working electrode and the counter electrode. In this sensor, the reagent portion further includes a hemolyzing agent (e.g., sodium cholate) for hemolyzing an erythrocyte, and when detecting the redox current, the erythrocyte is hemolyzed with the hemolyzing agent so as to cause hemoglobin released to an outside of the erythrocyte to react with the mediator and a current generated by this reaction also is detected to correct an effect of a hematocrit.Type: ApplicationFiled: September 28, 2004Publication date: July 7, 2005Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Teppei Shinno, Shin Ikeda
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Publication number: 20050067301Abstract: An analyzer (A) includes a current measurer (42) for measuring the current flowing between paired electrodes (22a), (22b) when a sample is introduced to the reagent layer (23) of a sensor (2) and voltage is applied across the electrodes, while also including a processor (3) for analyzing the sample based on the current after a predetermined reference time point. The analyzer (A) further includes a fail determiner (44) which monitors the change of the current before and after the reference time point and determines that the sensor (2) is improper when the current change does not correspond to a predetermined current change.Type: ApplicationFiled: November 18, 2002Publication date: March 31, 2005Inventors: Yoshimitsu Morita, Yoshimi Oura, Teppei Shinno
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Publication number: 20050000829Abstract: An analyzer (A) includes a measurer (42) for measuring an electro-physical quantity of a sample, and an acceleration measurer (43) for computing the acceleration of change of the electro-physical quantity such as a current measured by the measurer (42). The fail determination as to whether or not a predetermined condition necessary for performing analysis of the sample is satisfied is made based on the acceleration computed by the acceleration measurer (43). As a result, the fail determination in the analysis process of the sample can be performed accurately.Type: ApplicationFiled: November 18, 2002Publication date: January 6, 2005Inventors: Yoshimitsu Morita, Teppei Shinno