Biosensor, biosensor chip and biosensor device
First Claim
Patent Images
1. A method for performing assays of a fluid using a biosensor that comprises a first electrode set including a working electrode and a counter electrode;
- a working electrode terminal and a first reference terminal that are connected to the working electrode;
a counter electrode terminal and a second reference terminal that are connected to the counter electrode; and
a second electrode set including two electrodes;
wherein the second electrode set is disposed near the first electrode set;
the method comprising;
connecting the biosensor to a measurement circuit;
performing an assay of the fluid based on a current flowing through the working electrode terminal or the counter electrode terminal;
controlling a voltage between the working electrode and the counter electrode using a voltage detected by the first reference terminal and a voltage detected by the second reference terminal; and
performing another assay of the fluid based on a current flowing between the two electrodes of the second electrode set.
1 Assignment
0 Petitions
Accused Products
Abstract
A biosensor includes a working electrode 101, a counter electrode 102 opposing the working electrode 101, a working electrode terminal 103 and a working electrode reference terminal 10 connected to the working electrode 101 by wires, and a counter electrode terminal 104 connected to the counter electrode 102 by a wire. By employing a structure with at least three electrodes, it is possible to assay a target substance without being influenced by the line resistance on the working electrode side.
66 Citations
16 Claims
-
1. A method for performing assays of a fluid using a biosensor that comprises a first electrode set including a working electrode and a counter electrode;
- a working electrode terminal and a first reference terminal that are connected to the working electrode;
a counter electrode terminal and a second reference terminal that are connected to the counter electrode; and
a second electrode set including two electrodes;
wherein the second electrode set is disposed near the first electrode set;
the method comprising;connecting the biosensor to a measurement circuit; performing an assay of the fluid based on a current flowing through the working electrode terminal or the counter electrode terminal; controlling a voltage between the working electrode and the counter electrode using a voltage detected by the first reference terminal and a voltage detected by the second reference terminal; and performing another assay of the fluid based on a current flowing between the two electrodes of the second electrode set. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a working electrode terminal and a first reference terminal that are connected to the working electrode;
-
8. A device configured to be connected to a biosensor that comprises:
- a first electrode set including a working electrode and a counter electrode;
a working electrode terminal and a first reference terminal that are connected to the working electrode;
a counter electrode terminal and a second reference terminal that are connected to the counter electrode; and
a second electrode set including two electrodes, wherein the second electrode set is disposed near the first electrode set;
the device comprising;a measurement circuit for performing an assay of a fluid based on a current flowing between the working electrode and the counter electrode and for performing another assay of the fluid based on a current flowing between the two electrodes of the second electrode set, wherein the measurement circuit controls a voltage between the working electrode and the counter electrode using a voltage at the first reference terminal and a voltage at the second reference terminal during the assay performed by the first electrode set.
- a first electrode set including a working electrode and a counter electrode;
-
9. A device configured to be connected to a biosensor that comprises:
- a first electrode set including a working electrode and a counter electrode;
a working electrode terminal and a first reference terminal that are connected to the working electrode;
a counter electrode terminal and a second reference terminal that are connected to the counter electrode; and
a second electrode set including two electrodes, wherein the second electrode set is disposed near the first electrode set;
the device comprising;a measurement circuit for performing an assay of a fluid based on a current flowing between the working electrode and the counter electrode and for performing another assay of the fluid based on a current flowing between the two electrodes of the second electrode set; a first terminal configured to be connected to the working electrode terminal; a second terminal configured to be connected to the first reference terminal; a third terminal configured to be connected to the counter electrode terminal; and a fourth terminal configured to be connected to the second reference terminal. - View Dependent Claims (10, 11, 12, 13, 14, 15)
- a first electrode set including a working electrode and a counter electrode;
-
16. A device configured to be connected to a biosensor that comprises:
- a first electrode set including a working electrode and a counter electrode;
a working electrode terminal and a first reference terminal that are connected to the working electrode;
a counter electrode terminal and a second reference terminal that are connected to the counter electrode; and
a second electrode set including two electrodes, wherein the second electrode set is disposed near the first electrode set;
the device comprising;a measurement circuit for performing an assay of a fluid based on a current flowing between the working electrode and the counter electrode and for performing another assay of the fluid based on a current flowing between the two electrodes of the second electrode set; and a switch control circuit for controlling connection between the first electrode set and the measurement circuit and for controlling connection between the second electrode set and the measurement circuit.
- a first electrode set including a working electrode and a counter electrode;
Specification