公开(公告)号：US5582697A

公开(公告)日：1996-12-10

申请号：US425820

申请日：1995-04-20

申请人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai ,  Haruhiro Tsutsumi ,  Hideyuki Baba ,  Yoshinobu Tokuno ,  Syoji Miyazaki

发明人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai ,  Haruhiro Tsutsumi ,  Hideyuki Baba ,  Yoshinobu Tokuno ,  Syoji Miyazaki

IPC分类号： C12Q1/00 ,  G01N27/26

CPC分类号： C12Q1/005 ,  C12Q1/001 ,  Y10S435/817

摘要： The biosensor of this invention can quantify a substrate in a sample liquid by electrochemically measuring the amount of an electron acceptor that has been reduced by electrons generated in a reaction between the substrate and an oxidoreductase. The biosensor has an electrically insulating substrate and an electrode system formed on the substrate including a working electrode, a counter electrode and a third electrode used for detecting a liquid junction. The third electrode can be used merely for detecting a liquid junction, or can be used as both a reference electrode and a liquid junction detecting electrode.

摘要翻译： 本发明的生物传感器可以通过电化学测量由底物和氧化还原酶之间的反应中产生的电子而减少的电子受体的量来量化样品液体中的底物。 生物传感器具有电绝缘基板和形成在基板上的电极系统，该基板包括工作电极，对电极和用于检测液体接合点的第三电极。 第三电极可以仅用于检测液体接点，也可以用作参考电极和液体接点检测电极。

公开(公告)号：US06599407B2

公开(公告)日：2003-07-29

申请号：US09747975

申请日：2000-12-27

申请人： Yuko Taniike ,  Shin Ikeda ,  Shiro Nankai

发明人： Yuko Taniike ,  Shin Ikeda ,  Shiro Nankai

IPC分类号： G01N27327

CPC分类号： C12Q1/004

摘要： The present invention provides a biosensor having a favorable response characteristic up to a high concentration range, a low blank response and a high storage stability. This sensor comprises an electrode system including a working electrode and a counter electrode, for forming an electrochemical measurement system by coming in contact with a supplied solution; an electrically insulating supporting member for supporting the electrode system; a first reagent layer formed on the working electrode; and a second reagent layer formed on the counter electrode, wherein the first reagent layer comprises an enzyme as the main component, and the second reagent layer comprises an electron mediator as the main component.

摘要翻译： 本发明提供一种生物传感器，其具有高浓度范围，低空白响应和高储存稳定性的良好响应特性。 该传感器包括电极系统，其包括工作电极和对电极，用于通过与所提供的溶液接触形成电化学测量系统; 用于支撑电极系统的电绝缘支撑构件; 形成在工作电极上的第一试剂层; 以及形成在对电极上的第二试剂层，其中第一试剂层包含酶作为主要成分，第二试剂层包含电子介体作为主要成分。

公开(公告)号：US06258254B1

公开(公告)日：2001-07-10

申请号：US09122628

申请日：1998-07-27

申请人： Yoshiko Miyamoto ,  Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai

发明人： Yoshiko Miyamoto ,  Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai

IPC分类号： G01F164

CPC分类号： C12Q1/004

摘要： A method using a biosensor is disclosed which facilitates high accuracy quantitation of a substrate by best eliminating adverse effects of red blood cell existing in blood together with the substrate. The biosensor comprises an electrode system including a working electrode and a counter electrode formed on an electrically insulating base plate, and a reaction layer containing at least an oxidoreductase and an electron acceptor, wherein the electron acceptor is a sodium salt.

摘要翻译： 公开了一种使用生物传感器的方法，其通过最好地消除血液中存在于血液中的红细胞与基质一起的不良影响，促进了基质的高精度定量。 生物传感器包括电极系统，其包括在电绝缘基板上形成的工作电极和对电极，以及至少包含氧化还原酶和电子受体的反应层，其中电子受体是钠盐。

公开(公告)号：US5985116A

公开(公告)日：1999-11-16

申请号：US989426

申请日：1997-12-12

申请人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai

发明人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai

IPC分类号： G01N27/327 ,  C12M1/00 ,  C12Q1/00 ,  G01N27/26

CPC分类号： C12Q1/001

摘要： The biosensor of the present invention has a reaction layer that contains at least an oxidoreductase and an electron acceptor and is formed on an electrode system including a working electrode and a counter electrode on a base plate. The working electrode, the counter electrode, and lead conductors connecting with these electrodes are made of carbon. The counter electrode is formed in a substantially C shape, and the working electrode is arranged in a recess of the substantially C-shaped counter electrode. An insulating layer surrounds the counter electrode and the working electrode. A cover member with a groove is combined with the base plate to define a sample supply channel that is formed therebetween and runs toward the electrode system. The groove extends from one end of the base plate and passes over the electrode system, and the insulating layer extends to an air hole formed in a terminal of the groove of the cover member. This arrangement prevents exposure of part of the lead conductor connecting with the working electrode to the sample solution and development of an error in measurement.

摘要翻译： 本发明的生物传感器具有至少包含氧化还原酶和电子受体的反应层，并且形成在基板上的包括工作电极和对电极的电极系统上。 与这些电极连接的工作电极，对电极和引线导体由碳制成。 对电极形成为大致C形，工作电极配置在基本上为C形的对电极的凹部中。 绝缘层包围对电极和工作电极。 具有凹槽的盖构件与基板结合以限定形成在其间并朝向电极系统延伸的样品供应通道。 凹槽从基板的一端延伸并且经过电极系统，并且绝缘层延伸到形成在盖构件的凹槽的端子中的空气孔。 这样可以防止与工作电极连接的引出导体的一部分暴露于样品溶液，并且产生测量误差。

公开(公告)号：US5575895A

公开(公告)日：1996-11-19

申请号：US452774

申请日：1995-05-30

申请人： Shin Ikeda ,  Mariko Miyahara ,  Toshihiko Yoshioka ,  Shiro Nankai

发明人： Shin Ikeda ,  Mariko Miyahara ,  Toshihiko Yoshioka ,  Shiro Nankai

IPC分类号： G01N27/327 ,  C12Q1/00 ,  G01N27/26

CPC分类号： C12Q1/004 ,  Y10S435/817

摘要： A biosensor for quantification of a specific component contained in various biological samples comprises an electrically insulating base plate, an electrode system including a working electrode and a counter electrode which are provided on the electrically insulating base plate, a reaction layer formed on the electrode system including at least an oxido-reductase, and an enclosure member having a hollow space constituting a sample supplying channel on the electrically insulating base plate, wherein substantially the whole of the reaction layer is exposed to the hollow space.

摘要翻译： 用于定量各种生物样品中包含的特定成分的生物传感器包括电绝缘基板，包括设置在电绝缘基板上的工作电极和对电极的电极系统，形成在电极系统上的反应层，包括 至少一种氧化还原酶，以及具有中空空间的封闭构件，该中空空间构成电绝缘基板上的样品供应通道，其中基本上整个反应层暴露于中空空间。

公开(公告)号：US06885196B2

公开(公告)日：2005-04-26

申请号：US10220153

申请日：2001-07-17

申请人： Yuko Taniike ,  Shin Ikeda ,  Shiro Nankai

发明人： Yuko Taniike ,  Shin Ikeda ,  Shiro Nankai

IPC分类号： C12Q1/00 ,  A61B5/05

CPC分类号： G01N27/3272 ,  C12Q1/005 ,  C12Q1/006

摘要： A highly sensitive biosensor that uses a smaller amount of sample for measurement is described. The biosensor includes a first insulating base plate having a working electrode, a second insulating base plate having a counter electrode opposed to the working electrode, and a reagent layer containing at least an oxidoreductase. The biosensor further includes a sample supply pathway formed between the first and second insulating base plates, where the working electrode, counter electrode and reagent layer are exposed to an inside of the sample supply pathway, and the distance between the working electrode and the counter electrode is 150 μm or less.

摘要翻译： 描述了使用较少量的样品进行测量的高灵敏度生物传感器。 生物传感器包括具有工作电极的第一绝缘基板，具有与工作电极相对的反电极的第二绝缘基板和至少含有氧化还原酶的试剂层。 生物传感器还包括形成在第一和第二绝缘基板之间的样品供给路径，其中工作电极，对电极和试剂层暴露于样品供应路径的内部，并且工作电极和对电极之间的距离 是150mam以下。

公开(公告)号：US06790327B2

公开(公告)日：2004-09-14

申请号：US10023734

申请日：2001-12-21

申请人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai

发明人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai

IPC分类号： G01N27327

CPC分类号： C12Q1/004

摘要： An apparatus for determining the concentration of a substrate in a sample solution using an electrode system comprising a working electrode, a counter electrode, and a reaction layer which contains at least an oxidoreductase and an electron mediator and is formed on the electrode system to electrochemically measure a reduced amount of the electron mediator resulting from enzyme reaction in the reaction layer, wherein a third electrode is formed as an interfering substance detecting electrode. A current flowing between the counter electrode and the third electrode is measured which is taken as a positive error. Subsequently, voltage application between the counter electrode and the third electrode is released and a voltage for oxidizing the reduced form electron mediator is applied between the working electrode and the counter electrode to measure a current flowing between the two electrodes.

摘要翻译： 一种用于使用包括工作电极，对电极和至少包含氧化还原酶和电子介体的反应层的电极系统来确定样品溶液中基底的浓度的装置，并且形成在电极系统上以电化学测量 在反应层中由酶反应产生的电子介体的量减少，其中形成第三电极作为干扰物质检测电极。 测量在对电极和第三电极之间流动的电流，其被认为是正误差。 随后，释放对电极和第三电极之间的电压施加，并且在工作电极和对电极之间施加用于氧化还原形式的电子介体的电压，以测量在两个电极之间流动的电流。

公开(公告)号：US5985130A

公开(公告)日：1999-11-16

申请号：US834829

申请日：1997-04-03

申请人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai

发明人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai

IPC分类号： G01N27/327 ,  C12Q1/00 ,  G01N27/416 ,  G01N27/49 ,  G01N27/26

CPC分类号： C12Q1/001 ,  G01N27/3273

摘要： The present invention provides a method for quantifying a substrate having improved measurement accuracy and measurement sensitivity. According to the method for quantifying the substrate of the present invention, a constant voltage is applied to an electrode system, between a working electrode and a counter electrode, via a resistor connected in series with the electrode system after placing a sample solution containing the substrate on the electrode system, so as to oxidize an electron acceptor, which has been reduced by an enzyme reaction of the substrate, thereby determining a concentration of the substrate included in the sample solution based on an oxidizing current flowing in the course of oxidation.

摘要翻译： 本发明提供了一种用于量化具有改进的测量精度和测量灵敏度的衬底的方法。 根据本发明的基板的定量化方法，在放置含有基板的样品溶液之后，通过与电极系统串联连接的电阻器将恒定电压施加到工作电极与对电极之间的电极系统 在电极系统上，以通过基板的酶反应而还原的电子受体氧化，从而基于在氧化过程中流动的氧化电流来确定样品溶液中包含的底物的浓度。

公开(公告)号：US5650062A

公开(公告)日：1997-07-22

申请号：US526557

申请日：1995-09-12

申请人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai ,  Haruhiro Tsutsumi ,  Hideyuki Baba ,  Yoshinobu Tokuno ,  Syoji Miyazaki

发明人： Shin Ikeda ,  Toshihiko Yoshioka ,  Shiro Nankai ,  Haruhiro Tsutsumi ,  Hideyuki Baba ,  Yoshinobu Tokuno ,  Syoji Miyazaki

IPC分类号： C12Q1/00 ,  G01N27/26

CPC分类号： C12Q1/001 ,  Y10S435/817

摘要： The biosensor of this invention can quantify a substrate in a sample liquid by electrochemically measuring the amount of an electron acceptor that has been reduced by electrons generated in a reaction between the substrate and an oxidoreductase. The biosensor has an electrically insulating substrate and an electrode system formed on the substrate including a working electrode, a counter electrode and a third electrode used for detecting a liquid junction. The third electrode can be used merely for detecting a liquid junction, or can be used as both a reference electrode and a liquid junction detecting electrode.

摘要翻译： 本发明的生物传感器可以通过电化学测量由底物和氧化还原酶之间的反应中产生的电子而减少的电子受体的量来量化样品液体中的底物。 生物传感器具有电绝缘基板和形成在基板上的电极系统，该基板包括工作电极，对电极和用于检测液体接合点的第三电极。 第三电极可以仅用于检测液体接点，也可以用作参考电极和液体接点检测电极。

公开(公告)号：US06349229B1

公开(公告)日：2002-02-19

申请号：US09445557

申请日：2000-03-07

申请人： Motokazu Watanabe ,  Shin Ikeda ,  Toshihiko Yoshioka

发明人： Motokazu Watanabe ,  Shin Ikeda ,  Toshihiko Yoshioka

IPC分类号： A61B505

CPC分类号： A61B5/15142 ,  A61B5/150022 ,  A61B5/150099 ,  A61B5/150229 ,  A61B5/150358 ,  A61B5/150412 ,  A61B5/150954 ,  A61B5/15113 ,  A61B5/15117 ,  A61B5/15136

摘要： An examination system for bodily fluids includes a vessel-like examination unit having an opening, a sensor for examining the bodily fluids, and a bodily-fluids-oozing device. This system is further provided with a pump for decompressing the inside of the unit and an electromagnetic cross-valve for releasing the decompressed condition, or still further provided with humidifying means for supplying vapor inside the unit, in addition to the pump and the valve. As a result, the system produces a precise measurement with a little amount of bodily fluid.

摘要翻译： 体液检查系统包括具有开口的容器状检查单元，用于检查体液的传感器和体液渗出装置。 该系统还具有用于对单元内部进行减压的泵和用于释放减压状态的电磁交叉阀，或者还设置有除了泵和阀之外还用于在单元内供应蒸气的加湿装置。 结果，该系统产生一些精确的测量与少量的体液。