WO2000078992A3 - Mass transport limited in vivo analyte sensor - Google Patents

Mass transport limited in vivo analyte sensor Download PDF

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Publication number
WO2000078992A3
WO2000078992A3 PCT/US2000/016773 US0016773W WO0078992A3 WO 2000078992 A3 WO2000078992 A3 WO 2000078992A3 US 0016773 W US0016773 W US 0016773W WO 0078992 A3 WO0078992 A3 WO 0078992A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
mass transport
analyte
sensing layer
edge
Prior art date
Application number
PCT/US2000/016773
Other languages
French (fr)
Other versions
WO2000078992A2 (en
Inventor
James Say
Michael F Tomasco
Henning Sakslund
Jay D Audett
Hyun Cho
Duane O Yamasaki
Original Assignee
Therasense Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Therasense Inc filed Critical Therasense Inc
Priority to AU57471/00A priority Critical patent/AU5747100A/en
Priority to EP00942919A priority patent/EP1192269A2/en
Priority to JP2001505732A priority patent/JP4801301B2/en
Publication of WO2000078992A2 publication Critical patent/WO2000078992A2/en
Publication of WO2000078992A3 publication Critical patent/WO2000078992A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1486—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using enzyme electrodes, e.g. with immobilised oxidase
    • A61B5/14865—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using enzyme electrodes, e.g. with immobilised oxidase invasive, e.g. introduced into the body by a catheter or needle or using implanted sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1486—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using enzyme electrodes, e.g. with immobilised oxidase
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/001—Enzyme electrodes
    • C12Q1/002—Electrode membranes
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
    • C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
    • C12Q1/001—Enzyme electrodes
    • C12Q1/005—Enzyme electrodes involving specific analytes or enzymes
    • C12Q1/006—Enzyme electrodes involving specific analytes or enzymes for glucose
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S977/00—Nanotechnology
    • Y10S977/902—Specified use of nanostructure
    • Y10S977/904—Specified use of nanostructure for medical, immunological, body treatment, or diagnosis
    • Y10S977/925—Bioelectrical

Abstract

An in vivo electrochemical sensor including a working electrode, and an analyte-responsive sensing layer proximate the working electrode. The sensing layer is exposed at an edge of the sensor, wherein the sensor signal is limited, at least in part, by mass transport of analyte to the sensing layer. The sensor is configured and arranged for implantation into the body of a mammal for contact with body fluids of the mammal. The analyte diffuses to the sensing element via the edge of the sensor, thereby restricting mass transport of the analyte to the sensing element. This is because the solution-contacting surface area of the sensor edge is much smaller than an open face of the sensing layer.
PCT/US2000/016773 1999-06-18 2000-06-16 Mass transport limited in vivo analyte sensor WO2000078992A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU57471/00A AU5747100A (en) 1999-06-18 2000-06-16 Mass transport limited in vivo analyte sensor
EP00942919A EP1192269A2 (en) 1999-06-18 2000-06-16 MASS TRANSPORT LIMITED i IN VIVO /i ANALYTE SENSOR
JP2001505732A JP4801301B2 (en) 1999-06-18 2000-06-16 In vivo analyte sensor with limited mass transfer

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13993699P 1999-06-18 1999-06-18
US60/139,936 1999-06-18
US19461800P 2000-04-05 2000-04-05
US60/194,618 2000-04-05

Publications (2)

Publication Number Publication Date
WO2000078992A2 WO2000078992A2 (en) 2000-12-28
WO2000078992A3 true WO2000078992A3 (en) 2001-07-19

Family

ID=26837687

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/016773 WO2000078992A2 (en) 1999-06-18 2000-06-16 Mass transport limited in vivo analyte sensor

Country Status (5)

Country Link
US (2) US6654625B1 (en)
EP (2) EP2322645A1 (en)
JP (1) JP4801301B2 (en)
AU (1) AU5747100A (en)
WO (1) WO2000078992A2 (en)

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US6975893B2 (en) 2005-12-13
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