Biosensor, measuring instrument for biosensor, and method of quantifying substrate
6 Assignments
0 Petitions
Accused Products
Abstract
A method of measuring a quantity of a substrate contained in sample liquid is provided. This method can reduce measurement errors caused by a biosensor. The biosensor includes at least a pair of electrodes on an insulating board and is inserted into a measuring device which includes a supporting section for supporting detachably the biosensor, plural connecting terminals to be coupled to the respective electrodes, and a driving power supply which applies a voltage to the respective electrodes via the connecting terminals. One of the electrodes of the biosensor is connected to the first and second connecting terminals of the measuring device only when the biosensor is inserted into the measuring device in a given direction, and has a structure such that the electrode becomes conductive between the first and second connecting terminals due to a voltage application by the driving power supply.
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Citations
52 Claims
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1-33. -33. (canceled)
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34. A method of measuring a quantity of a substrate included in sample liquid, comprising the steps of:
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providing a biosensor which includes;
an insulating board;
an electrode section formed on at least a part of the insulating board, the electrode section including a counter electrode, a measuring electrode, and a detecting electrode;
a sample supplying path for supplying the sample liquid to the electrode section;
and a reagent layer for reacting on the sample liquid supplied through the sample supplying path;
providing a measuring device which includes;
a supporting section for detachably supporting the biosensor; and
a connecting terminal and a driving power supply for applying a voltage to the electrode section;
inserting the biosensor into the supporting section of the measuring device;
applying a voltage with the driving power supply to a first group including the counter electrode and the measuring electrode; and
applying a voltage with the driving power supply to a second group including the detecting electrode and one of the measuring electrode and the counter electrode. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A method of measuring a quantity of a substrate, comprising the steps of:
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providing a biosensor which includes a reagent layer reacting specifically on a substrate included in a measurement sample;
providing a measuring device for measuring the quantity of the substrate included in the measurement sample from a sample produced by reaction between reagent in the reagent layer and the measurement sample, where the measuring device includes;
a temperature measuring section for measuring a temperature while the reaction between the reagent layer and the measurement sample progresses; and
a temperature compensation data memory having a plurality of measurement compensation tables which are different in respective temperature ranges;
selecting one of the compensation tables according to a temperature measured by the temperature measuring section;
calculating a compensation value corresponding to a measured value of the substrate; and
compensating the measured value with the calculated compensation value. - View Dependent Claims (45)
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46. A method of measuring a quantity of a substrate, comprising the steps of:
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providing a biosensor to which sample liquid containing a substrate is supplied;
providing a measuring device which includes temperature measuring means for measuring a temperature inside the measuring device;
detecting a temperature change between a temperature measured before the quantity of the substrate is measured and a temperature measured when the quantity of the substrate is measured; and
determining, according to the temperature change, whether the quantity of the substrate is measured or not. - View Dependent Claims (47, 48)
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49. A method of measuring a quantity of a substrate, comprising the steps of:
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providing a biosensor which includes;
an insulating layer;
an electrode section formed on at least a part of the insulating board, the electrode section including a counter electrode and a measuring electrode; and
a reagent layer for reacting on sample liquid supplied to the electrode section;
providing a measuring device which includes;
a supporting section for detachably supporting the biosensor; and
a connecting terminal and a driving power supply for applying a voltage to the electrodes of the electrode section;
applying a first voltage from the measuring device to the electrode section during a first period;
halting applying the voltage during a standby period after the first period; and
measuring a quantity of a substrate in the sample liquid through detecting an electric current produced by applying a second voltage to the electrode section during a second period after the standby period, the first voltage being greater than the second voltage. - View Dependent Claims (50, 51, 52)
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Specification