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    • 11. 再颁专利
    • Electrode with improved signal to noise ratio
    • 具有提高信噪比的电极
    • USRE38775E1
    • 2005-08-16
    • US10285659
    • 2002-10-30
    • Ronald T. KurnikJanet TamadaMichael J. Tierney
    • Ronald T. KurnikJanet TamadaMichael J. Tierney
    • A61B5/0408A61B5/00A61B5/145A61B5/1477C12Q1/54G01N27/30G01N27/327
    • A61B5/1486C12Q1/54
    • An electrode assembly for sensing an electrochemical signal diffused from a source to a working electrode which is comprised of a plurality of substantially separated working electrode surfaces is disclosed. The electrode of the invention is comprised of 1) a working electrode made up of a plurality of working electrode surfaces or components and 2) a electrically insulating gap defined by adjacent edges of 1) insulating the working electrode surfaces or components from each other. The working electrode components are configured to receive electrochemical signal from two or preferably three dimensions simultaneously. The working electrode components configured over the same surface as a single electrode provide (1) an improved signal to noise ratio as compared to a single electrode by reducing noise, and (2) provide an overall enhanced signal after sensing for a given period of time.
    • 公开了一种用于感测从源极扩散到工作电极的电化学信号的电极组件,其由多个基本上分离的工作电极表面组成。 本发明的电极包括1)由多个工作电极表面或部件组成的工作电极,以及2)由相邻边缘限定的电绝缘间隙,1)将工作电极表面或部件彼此绝缘。 工作电极部件被配置成从两个或优选三个维度同时接收电化学信号。 配置在与单个电极相同的表面上的工作电极组件提供(1)通过降低噪声与单个电极相比提高了信噪比,以及(2)在感测到给定时间段之后提供总体增强的信号 。
    • 13. 发明申请
    • DEVICES, SYSTEMS, METHODS AND TOOLS FOR CONTINUOUS GLUCOSE MONITORING
    • 用于连续葡萄糖监测的装置,系统,方法和工具
    • US20090131778A1
    • 2009-05-21
    • US12275145
    • 2008-11-20
    • Arvind N. JinaBeelee ChuaJanet TamadaMichael J. TierneyShashi P. Desai
    • Arvind N. JinaBeelee ChuaJanet TamadaMichael J. TierneyShashi P. Desai
    • A61B5/145
    • A61B5/14532A61B5/14514A61B5/14865
    • One aspect of the invention provides a glucose monitor having a plurality of tissue piercing elements, each tissue piercing element having a distal opening, a proximal opening and interior space extending between the distal and proximal openings; a sensing volume in fluid communication with the proximal openings of the tissue piercing elements; sensing fluid extending into the sensing volume; and a glucose sensor adapted to detect a concentration of glucose in the sensing fluid within the sensing volume. Another aspect of the invention provides A method of in vivo monitoring of an individual's interstitial fluid glucose concentration comprising: inserting distal ends of a plurality of tissue piercing elements through a stratum corneum area of the individual's skin, the tissue piercing elements each comprising a distal opening, a proximal opening, and an interior space extending between the distal and proximal opening; allowing interstitial fluid to flow into the interior space of the tissue piercing elements to substantially fill the interior space; filling substantially the entire interior space of the sensing area; and sensing a glucose concentration of the sensing fluid.
    • 本发明的一个方面提供一种具有多个组织刺穿元件的葡萄糖监测器,每个组织刺穿元件具有远端开口,在远端和近端开口之间延伸的近端开口和内部空间; 与组织刺穿元件的近端开口流体连通的感测体积; 感测流体延伸到感测体积中; 以及适于检测感测体积内的感测流体中的葡萄糖浓度的葡萄糖传感器。 本发明的另一方面提供了一种体内监测个体间质液葡萄糖浓度的方法,包括:将多个组织刺穿元件的远端穿过个体皮肤的角质层区域,所述组织刺穿元件各自包括远端开口 ,近端开口和在远端和近端开口之间延伸的内部空间; 允许间质液体流入组织刺穿元件的内部空间以基本上填充内部空间; 基本上填充感测区域的整个内部空间; 并感测感测流体的葡萄糖浓度。
    • 14. 发明授权
    • Electrode with improved signal to noise ratio
    • 具有提高信噪比的电极
    • US6139718A
    • 2000-10-31
    • US824143
    • 1997-03-25
    • Ronald T. KurnikJanet TamadaMichael J. Tierney
    • Ronald T. KurnikJanet TamadaMichael J. Tierney
    • A61B5/0408A61B5/00A61B5/145A61B5/1477C12Q1/54G01N27/30G01N27/327G01N27/26
    • A61B5/1486C12Q1/54
    • An electrode assembly for sensing an electrochemical signal diffused from a source to a working electrode which is comprised of a plurality of substantially separated working electrode surfaces is disclosed. The electrode of the invention is comprised of 1) a working electrode made up of a plurality of working electrode surfaces or components and 2) a electrically insulating gap defined by adjacent edges of 1) insulating the working electrode surfaces or components from each other. The working electrode components are configured to receive electrochemical signal from two or preferably three dimensions simultaneously. The working electrode components configured over the same surface as a single electrode provide (1) an improved signal to noise ratio as compared to a single electrode by reducing noise, and (2) provide an overall enhanced signal after sensing for a given period of time.
    • 公开了一种用于感测从源极扩散到工作电极的电化学信号的电极组件,其由多个基本上分离的工作电极表面组成。 本发明的电极包括1)由多个工作电极表面或部件组成的工作电极,以及2)由相邻边缘限定的电绝缘间隙,1)将工作电极表面或部件彼此绝缘。 工作电极部件被配置成从两个或优选三个维度同时接收电化学信号。 配置在与单个电极相同的表面上的工作电极组件提供(1)通过降低噪声与单个电极相比提高了信噪比,以及(2)在感测到给定时间段之后提供总体增强的信号 。
    • 15. 发明授权
    • Device for sample of substances using alternating polarity
    • 使用交替极性取样物质的设备
    • US06687522B2
    • 2004-02-03
    • US09893916
    • 2001-06-28
    • Janet Tamada
    • Janet Tamada
    • A61B505
    • A61B5/6833A61B5/14532
    • A method for sampling of a substance from a subject is provided, which comprises placing one or more sampling chambers on a collection site on a tissue surface on the subject; conducting electric current through the tissue to extract a substance from the subject in a first direction in one or more sampling chambers that functions alternatively as both an anode and cathode during the course of the method; reversing the polarity to cause direct current to flow in second direction opposite the first direction; and analyzing the sampling chamber or chambers for the concentration of a substance or a substance metabolite. There is also provided a device for sampling of a substance from an organism on continuously or intermittently using alternating polarity method based on the application of low intensity electric fields of alternating polarity across the skin (iontophoresis) to enhance the transport of a substance (such as glucose, lactic acid, pyruvic acid, and the like) from body tissues to a sampling chamber. The device comprises an electrical power supply; a transdermal system that contains one or more sampling chambers that function as both anode and cathode during the course of sampling; a means to alternates or reverses the polarity during the iontophoretic sampling; and means for analyzing for the concentration of a substance or a substance metabolite.
    • 提供了从受检者取样物质的方法,其包括将一个或多个取样室放置在受试者的组织表面上的收集位置上; 在所述方法的过程中,在一个或多个取样室中以第一方向从所述受试者提取物质,所述取样室在所述方法的过程中作为阳极和阴极交替地起作用; 使极性反转,使得直流电流沿与第一方向相反的第二方向流动; 并分析取样室或浓缩物质或物质代谢物的浓度。 还提供了一种基于在皮肤上交替极性的低强度电场(离子电渗疗法)的连续或间歇地使用交替极性法来提取物质的输送(例如, 葡萄糖,乳酸,丙酮酸等)从身体组织到采样室。 该装置包括电源; 一种透皮系统,其在采样过程中包含一个或多个在阳极和阴极两者之间起作用的取样室; 在离子电渗检测过程中交替或反转极性的方法; 以及用于分析物质或物质代谢物浓度的方法。
    • 20. 发明授权
    • Chemical signal-impermeable mask
    • 化学信号不透水面罩
    • US06771995B2
    • 2004-08-03
    • US10324818
    • 2002-12-20
    • Ronald T. KurnikJanet TamadaMichael Tierney
    • Ronald T. KurnikJanet TamadaMichael Tierney
    • A61B500
    • A61B5/1486A61N1/30C12Q1/001C12Q1/002C12Q1/006
    • A chemical signal-impermeable mask is positioned in the electrolyte flow such that the mask is between a source of chemical signal and a working electrode which senses the chemical signal transported from the source (e.g., by diffusion). The configuration of the mask is such that the mask prevents substantially all chemical signal transport from the chemical signal source having a radial vector component relative to a plane of the mask and the catalytic face of the working electrode, thus allowing primarily only chemical signal transport that is substantially perpendicular to the place of the mask and the catalytic surface of the working electrode. By reducing or eliminating chemical signal radial transport toward the working electrode, the mask thus significantly reduces or eliminates edge effects. By substantially reducing edge effects created by radial transport of chemical signal, it is possible to obtain a more accurate measurement of the amount (e.g., concentration) of chemical signal that is transported from a given area of source material.
    • 化学信号不可渗透的掩模位于电解质流中,使得掩模位于化学信号源和感测从源传输的化学信号(例如通过扩散)的工作电极之间。 掩模的配置使得掩模基本上防止具有相对于掩模的平面和工作电极的催化面的径向矢量分量的化学信号源的所有化学信号传输,因此主要仅允许化学信号传输 基本上垂直于掩模的位置和工作电极的催化表面。 通过减少或消除朝向工作电极的化学信号径向传输,掩模因此显着地减少或消除了边缘效应。 通过显着降低由化学信号的径向传输产生的边缘效应,可以获得从源材料的给定区域输送的化学信号的量(例如,浓度)的更准确的测量。