WO2009104016A3 - Methods of calibrating a sensor in a patient monitoring system - Google Patents

Methods of calibrating a sensor in a patient monitoring system Download PDF

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Publication number
WO2009104016A3
WO2009104016A3 PCT/GB2009/050161 GB2009050161W WO2009104016A3 WO 2009104016 A3 WO2009104016 A3 WO 2009104016A3 GB 2009050161 W GB2009050161 W GB 2009050161W WO 2009104016 A3 WO2009104016 A3 WO 2009104016A3
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
analyte concentration
concentration
fluid
unknown
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/GB2009/050161
Other languages
French (fr)
Other versions
WO2009104016A2 (en
Inventor
Gavin Troughton
Peter Laitenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sphere Medical Ltd
Original Assignee
Sphere Medical Ltd
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 Sphere Medical Ltd filed Critical Sphere Medical Ltd
Priority to US12/918,311 priority Critical patent/US8869585B2/en
Priority to JP2010547257A priority patent/JP2011512218A/en
Priority to EP09712146.1A priority patent/EP2254460B1/en
Priority to DK09712146.1T priority patent/DK2254460T3/en
Publication of WO2009104016A2 publication Critical patent/WO2009104016A2/en
Anticipated expiration legal-status Critical
Publication of WO2009104016A3 publication Critical patent/WO2009104016A3/en
Ceased legal-status Critical Current

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 or pH-value ; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid or cerebral tissue
    • A61B5/1495—Calibrating or testing of in-vivo probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0223—Operational features of calibration, e.g. protocols for calibrating sensors

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Optics & Photonics (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

A method comprises calculating a sensor drift; calibrating the sensor using at least one calibration fluid; and periodically updating the sensor calibration based on the sensor drift calculation. Additionally, a method comprises providing a calibration fluid; setting the analyte concentration in the first fluid to a first concentration with said adjusting means; measuring the first analyte concentration with the sensor; setting the analyte concentration in the first fluid to a second concentration with said adjusting means; measuring the second analyte concentration with the sensor; and determining the calibration coefficients for the sensor from the measured first analyte concentration and the measured second analyte concentration. Additionally, a method comprises exposing the sensor to a first fluid comprising a first unknown concentration of the analyte; measuring the first unknown analyte concentration with the sensor; determining the first unknown analyte concentration with an analyser external to the patient monitoring system; providing the sensor with the determined first analyte concentration, and determining the calibration coefficients for the sensor from the measured first unknown analyte concentration and the analyte concentration determined by the analyser.
PCT/GB2009/050161 2008-02-19 2009-02-19 Methods of calibrating a sensor in a patient monitoring system Ceased WO2009104016A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/918,311 US8869585B2 (en) 2008-02-19 2009-02-19 Methods of calibrating a sensor in a patient monitoring system
JP2010547257A JP2011512218A (en) 2008-02-19 2009-02-19 Method for calibrating a sensor in a patient monitoring device
EP09712146.1A EP2254460B1 (en) 2008-02-19 2009-02-19 Method of calibrating a sensor in a patient monitoring system
DK09712146.1T DK2254460T3 (en) 2008-02-19 2009-02-19 Method for calibrating a sensor in a patient monitoring system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0802990A GB2457660A (en) 2008-02-19 2008-02-19 Methods of calibrating a sensor in a patient monitoring system
GB0802990.2 2008-02-19

Publications (2)

Publication Number Publication Date
WO2009104016A2 WO2009104016A2 (en) 2009-08-27
WO2009104016A3 true WO2009104016A3 (en) 2011-03-31

Family

ID=39271914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/050161 Ceased WO2009104016A2 (en) 2008-02-19 2009-02-19 Methods of calibrating a sensor in a patient monitoring system

Country Status (6)

Country Link
US (1) US8869585B2 (en)
EP (1) EP2254460B1 (en)
JP (1) JP2011512218A (en)
DK (1) DK2254460T3 (en)
GB (1) GB2457660A (en)
WO (1) WO2009104016A2 (en)

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US9555186B2 (en) 2012-06-05 2017-01-31 Tandem Diabetes Care, Inc. Infusion pump system with disposable cartridge having pressure venting and pressure feedback
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US9173998B2 (en) 2013-03-14 2015-11-03 Tandem Diabetes Care, Inc. System and method for detecting occlusions in an infusion pump
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GB2512842A (en) 2013-04-08 2014-10-15 Sphere Medical Ltd Sensor calibration method and apparatus
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Also Published As

Publication number Publication date
US8869585B2 (en) 2014-10-28
DK2254460T3 (en) 2016-07-18
EP2254460A2 (en) 2010-12-01
EP2254460B1 (en) 2016-06-15
WO2009104016A2 (en) 2009-08-27
JP2011512218A (en) 2011-04-21
GB0802990D0 (en) 2008-03-26
US20110120206A1 (en) 2011-05-26
GB2457660A (en) 2009-08-26

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