Sensor chip, and measurement device and blood test device in which this sensor chip is used
First Claim
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1. A sensor chip for analyzing components of a biological sample, the sensor chip comprising:
- a substrate;
a sample inlet provided to the substrate, said sample inlet configured to receive a part of the biological sample;
a supply path provided to the substrate and being connected to the sample inlet, said supply path configured to receive the part of the biological sample from the sample inlet;
detection electrodes provided to the supply path, said detection electrodes being configured to detect signals used for analysis of the part of the biological sample; and
a surplus blood reservoir provided to the substrate and not being connected to the supply path, said surplus blood reservoir configured to hold a surplus of the biological sample, the surplus of the biological sample not including the part of the biological sample from which signals used for analysis are detected by the detection electrodes,wherein the substrate has a surplus blood inlet that is provided to an end of the substrate, the surplus of the biological sample being provided to the surplus blood inlet,wherein the surplus blood inlet draws the surplus of the biological sample into the surplus blood reservoir by capillary action,wherein the sample inlet is provided to one end face of the substrate, andwherein the surplus blood inlet is provided to an end face of the substrate that is different side from the end face where the sample inlet is provided.
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Abstract
This sensor chip (11) comprises a substrate (15) in the form of a flat board, a sample inlet (20) that is provided in the thickness direction of the substrate (15) and into which flows the blood (3) used for measurement, a supply path (21) that communicates with this sample inlet (20), and detection electrodes (17, 18, 19) provided to this supply path (21), wherein the substrate (15) is provided with a surplus blood reservoir (25) that draws in surplus blood (3a) and holds this drawn surplus blood (3a).
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Citations
33 Claims
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1. A sensor chip for analyzing components of a biological sample, the sensor chip comprising:
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a substrate; a sample inlet provided to the substrate, said sample inlet configured to receive a part of the biological sample; a supply path provided to the substrate and being connected to the sample inlet, said supply path configured to receive the part of the biological sample from the sample inlet; detection electrodes provided to the supply path, said detection electrodes being configured to detect signals used for analysis of the part of the biological sample; and a surplus blood reservoir provided to the substrate and not being connected to the supply path, said surplus blood reservoir configured to hold a surplus of the biological sample, the surplus of the biological sample not including the part of the biological sample from which signals used for analysis are detected by the detection electrodes, wherein the substrate has a surplus blood inlet that is provided to an end of the substrate, the surplus of the biological sample being provided to the surplus blood inlet, wherein the surplus blood inlet draws the surplus of the biological sample into the surplus blood reservoir by capillary action, wherein the sample inlet is provided to one end face of the substrate, and wherein the surplus blood inlet is provided to an end face of the substrate that is different side from the end face where the sample inlet is provided. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A sensor chip for analyzing components of a biological sample, the sensor chip comprising:
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a substrate; a sample inlet provided to the substrate, said sample inlet configured to receive a part of the biological sample; a supply path provided to the substrate and being connected to the sample inlet, said supply path configured to receive the part of the biological sample from the sample inlet; detection electrodes provided to the supply path, said detection electrodes being configured to detect signals used for analysis of the part of the biological sample; and a surplus blood reservoir provided to the substrate and not being connected to the supply path, said surplus blood reservoir configured to hold a surplus of the biological sample, the surplus of the biological sample not including the part of the biological sample from which signals used for analysis are detected by the detection electrodes, wherein the substrate is formed by laminating a base plate, a spacer, a cover, a surplus blood suction spacer, and a surplus blood suction cover.
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30. A measurement device, comprising:
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a housing; a sensor insertion portion that is provided to part of the housing and into which a sensor chip is inserted; a connector that is provided to the sensor insertion portion; a measurement circuit that is connected to the connector; and a display component that is connected to the output of the measurement circuit and displays the result of measuring analysis data for a biological sample introduced to the sensor chip and measured with the measurement circuit, wherein the sensor chip includes; a substrate; a sample inlet provided to the substrate, said sample inlet configured to receive a part of the biological sample; a supply path provided to the substrate and being connected to the sample inlet, said supply path configured to receive the part of the biological sample from the sample inlet; detection electrodes provided to the supply path, said detection electrodes being configured to detect signals used for analysis of the part of the biological sample; a surplus blood reservoir provided to the substrate and not being connected to the supply path, said surplus blood reservoir configured to hold a surplus of the biological sample, the surplus of the biological sample not including the part of the biological sample from which signals used for analysis are detected by the detection electrodes; and a surplus blood detection electrode that detects blood that flows into the surplus blood reservoir, and wherein there is further provided a terminal for the surplus blood detection electrode, the terminal being provided to the connector and detecting that surplus blood has been drawn into the sensor chip. - View Dependent Claims (31)
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32. A blood test device, comprising:
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a housing; a sensor insertion portion that is provided to part of the housing and into which a sensor chip is inserted; puncture component configured to puncture the skin, provided at or near a location that is opposite the sensor insertion portion; a connector that is provided to the sensor insertion portion; an electrical circuit that is connected to the connector and performs analysis of a biological sample; and a display component that is connected to the output of the electrical circuit, wherein the sensor chip includes; a substrate; a sample inlet provided to the substrate, said sample inlet configured to receive a part of the biological sample; a supply path provided to the substrate and being connected to the sample inlet, said supply path configured to receive the part of the biological sample from the sample inlet; detection electrodes provided to the supply path, said detection electrodes being configured to detect signals used for analysis of the part of the biological sample; a surplus blood reservoir provided to the substrate and not being connected to the supply path, said surplus blood reservoir configured to hold a surplus of the biological sample, the surplus of the biological sample not including the part of the biological sample from which signals used for analysis are detected by the detection electrodes; and a surplus blood detection electrode that detects blood that has flowed into the surplus blood reservoir, and wherein there is further provided a surplus blood detection circuit that performs detection of surplus blood taken into the sensor chip.
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33. A sensor chip for analyzing components of a biological sample, the sensor chip comprising:
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a substrate; a sample inlet provided to the substrate, said sample inlet configured to receive a part of the biological sample; a supply path provided to the substrate and being connected to the sample inlet, said supply path configured to receive the part of the biological sample from the sample inlet; detection electrodes provided to the supply path, said detection electrodes being configured to detect signals used for analysis of the part of the biological sample; and a surplus blood reservoir provided to the substrate and not being connected to the supply path, said surplus blood reservoir configured to hold a surplus of the biological sample, the surplus of the biological sample not including the part of the biological sample from which signals used for analysis are detected by the detection electrodes, wherein the substrate is formed by laminating a base plate, a spacer, a cover, a surplus blood suction spacer, and a surplus blood suction cover, wherein the spacer includes a slit, the slit forming the supply path, wherein the surplus blood suction spacer includes a pair of cut-outs, the pair of cut-outs forming the surplus blood reservoir, and wherein the spacer and the surplus blood suction spacer are separated by the cover.
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Specification