Biosensor, biosensor chip and biosensor device
First Claim
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1. A biosensor, comprising:
- a working electrode disposed on a proximal end of the biosensor;
a counter electrode disposed on the proximal end of the biosensor;
a working electrode terminal disposed on a distal end of the biosensor;
a counter electrode terminal disposed on the distal end of the biosensor;
a first reference terminal disposed on the distal end of the biosensor;
a second reference terminal disposed on the distal end of the biosensor;
a first conductive line connecting the working electrode to the working electrode terminal;
a second conductive line connecting the working electrode to the first reference terminal;
a third conductive line connecting the counter electrode to the counter electrode terminal;
a fourth conductive line connecting the counter electrode to the second reference terminal; and
an additional counter electrode disposed on the proximal end of the biosensor, wherein the working electrode is provided between the counter electrode and the additional counter electrode.
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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
4 Claims
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1. A biosensor, comprising:
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a working electrode disposed on a proximal end of the biosensor; a counter electrode disposed on the proximal end of the biosensor; a working electrode terminal disposed on a distal end of the biosensor; a counter electrode terminal disposed on the distal end of the biosensor; a first reference terminal disposed on the distal end of the biosensor; a second reference terminal disposed on the distal end of the biosensor; a first conductive line connecting the working electrode to the working electrode terminal; a second conductive line connecting the working electrode to the first reference terminal; a third conductive line connecting the counter electrode to the counter electrode terminal; a fourth conductive line connecting the counter electrode to the second reference terminal; and an additional counter electrode disposed on the proximal end of the biosensor, wherein the working electrode is provided between the counter electrode and the additional counter electrode. - View Dependent Claims (2, 3)
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4. A biosensor device, comprising:
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a biosensor, comprising; a working electrode disposed on a proximal end of the biosensor; a counter electrode disposed on the proximal end of the biosensor; a working electrode terminal disposed on a distal end of the biosensor; a counter electrode terminal disposed on the distal end of the biosensor; a first reference terminal disposed on the distal end of the biosensor; a second reference terminal disposed on the distal end of the biosensor; a first conductive line connecting the working electrode to the working electrode terminal; a second conductive line connecting the working electrode to the first reference terminal; a third conductive line connecting the counter electrode to the counter electrode terminal; a fourth conductive line connecting the counter electrode to the second reference terminal; and an additional counter electrode disposed on the proximal end of the biosensor, wherein the working electrode is provided between the counter electrode and the additional counter electrode; and a measurement circuit connected to the biosensor for performing an assay on a fluid based on a current flowing through the first conductive line or the third conductive line; wherein substantially no current flows through the second conductive line and through the fourth conductive line during the assay.
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Specification