LIQUID SAMPLE MEASUREMENT DEVICE, LIQUID SAMPLE MEASUREMENT METHOD, AND BIOSENSOR

摘要

It is intended to provide, for example, a liquid sample measurement device capable of measuring the amounts of components of a liquid with a high accuracy. A first voltage is applied to an electrode pair 21, 22, which composes a biosensor 1, to obtain, a first response value, a second voltage is applied to an electrode pair 23, 24, which composes the biosensor 1, to obtain a second response value, and a current that is generated when a third voltage is applied to an electrode pair 23, 27, which composes the biosensor 1, is detected to obtain a third response value. A liquid sample measurement device 6 uses the first response value, the second response value, and the third response value to obtain the concentration of glucose and the amount of blood cells of blood as well as the value equivalent to the temperature of the biosensor 1.

主权项

1. A liquid sample measurement device that measures the amounts of components using a biosensor in which a liquid is introduced and then components contained in said liquid are subjected to oxidation-reduction using an oxidoreductase,
wherein the liquid sample measurement device comprises: a first current value measure that detects, as a first current value, an oxidation-reduction current that is generated by the oxidation-reduction when a first voltage is applied to a first electrode pair, which composes the biosensor; a second current value measure that detects, as a second current value, a current that is generated when a second voltage is applied to a second electrode pair, which composes the biosensor; a third current value measure that detects, as a third current value, a current that is generated when a third voltage is applied to a third electrode pair, which composes the biosensor; a controller that controls a voltage value and a voltage application period of each of the first voltage, the second voltage, and the third voltage, that applies the second voltage and the third voltage to the second electrode pair and the third electrode pair, respectively, while the first voltage is applied to the first electrode pair, and that controls each measurement timing for measuring the first current value, the second current value, and the third current value; and a calculator that calculates the amounts of a first component and a second component contained in the liquid as well as a value equivalent to the temperature of the biosensor using a set of the first current value, the second current value, and the third current value generated when the first voltage, the second voltage, and the third voltage were applied, respectively.