CA2153878A1 - Biosensing Meter with Ambient Temperature Estimation Method and System - Google Patents

Biosensing Meter with Ambient Temperature Estimation Method and System

Info

Publication number
CA2153878A1
CA2153878A1 CA2153878A CA2153878A CA2153878A1 CA 2153878 A1 CA2153878 A1 CA 2153878A1 CA 2153878 A CA2153878 A CA 2153878A CA 2153878 A CA2153878 A CA 2153878A CA 2153878 A1 CA2153878 A1 CA 2153878A1
Authority
CA
Canada
Prior art keywords
meter
temperature
state
ambient temperature
biosensing
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.)
Granted
Application number
CA2153878A
Other languages
French (fr)
Other versions
CA2153878C (en
Inventor
Bradley E. White
Michael L. Brown
Paul G. Ritchie
Vladimir Svetnik
Robert Anthony Parks
Stefan Weinert
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.)
Roche Diagnostics Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2153878A1 publication Critical patent/CA2153878A1/en
Application granted granted Critical
Publication of CA2153878C publication Critical patent/CA2153878C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/28—Electrolytic cell components
    • G01N27/30—Electrodes, e.g. test electrodes; Half-cells
    • G01N27/327—Biochemical electrodes, e.g. electrical or mechanical details for in vitro measurements
    • G01N27/3271—Amperometric enzyme electrodes for analytes in body fluids, e.g. glucose in blood
    • G01N27/3274—Corrective measures, e.g. error detection, compensation for temperature or hematocrit, calibration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/42—Circuits effecting compensation of thermal inertia; Circuits for predicting the stationary value of a temperature

Abstract

A biosensing meter is provided that determines a value of an analyte in a biological sample. The meter employs an algorithm for determining the analyte value, which value is dependent upon ambient temperature about the biological sample when it is present in a reaction zone. The biosensing meter includes a processor and a temperature sensor. The temperature sensor is positioned within the meter's structure and thereby exhibits a delayed response to changes in the ambient temperature.
The meter performs a temperature estimation method to overcome the delayed temperature response. The method commences by the meter repetitively and periodically acquiring temperature readings from the temperature sensor when the biosensing meter is both in an on state and in an off state. When the meter is in the on state, the algorithm estimates the ambient temperature by employing at least two most recent temperature readings and extrapolating therefrom to achieve an ambient temperature estimate. Temperature readings are acquired by the meter at first intervals when the meter is in the off state and at second, shorter intervals when the meter is in the on state, the temperature extrapolations only occurring when the meter is in the on state.
CA002153878A 1993-06-08 1994-05-13 Biosensing meter with ambient temperature estimation method and system Expired - Fee Related CA2153878C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/073,179 US5405511A (en) 1993-06-08 1993-06-08 Biosensing meter with ambient temperature estimation method and system
US08/073,179 1993-06-08
PCT/US1994/005321 WO1994029704A2 (en) 1993-06-08 1994-05-13 Biosensing meter with ambient temperature estimation method and system

Publications (2)

Publication Number Publication Date
CA2153878A1 true CA2153878A1 (en) 1994-12-22
CA2153878C CA2153878C (en) 1999-06-15

Family

ID=22112213

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002153878A Expired - Fee Related CA2153878C (en) 1993-06-08 1994-05-13 Biosensing meter with ambient temperature estimation method and system

Country Status (8)

Country Link
US (1) US5405511A (en)
EP (1) EP0702787B1 (en)
JP (1) JP2634699B2 (en)
AU (1) AU6832494A (en)
CA (1) CA2153878C (en)
DE (2) DE702787T1 (en)
ES (1) ES2153333T3 (en)
WO (1) WO1994029704A2 (en)

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Also Published As

Publication number Publication date
JPH08503304A (en) 1996-04-09
ES2153333T3 (en) 2004-08-16
EP0702787A1 (en) 1996-03-27
EP0702787A4 (en) 1997-05-21
EP0702787B1 (en) 2004-01-07
CA2153878C (en) 1999-06-15
DE69433476T2 (en) 2004-10-14
DE702787T1 (en) 2000-11-02
WO1994029704A2 (en) 1994-12-22
US5405511A (en) 1995-04-11
AU6832494A (en) 1995-01-03
JP2634699B2 (en) 1997-07-30
ES2153333T1 (en) 2001-03-01
DE69433476D1 (en) 2004-02-12

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