Biosensor
First Claim
1. A biosensor comprising:
- an insulating base plate;
an electrode system having a working electrode and a counter electrode which are provided on said base plate;
a reaction layer including at least oxidoreductase and an electron mediator;
a sample solution supply pathway which includes said electrode system and said reaction layer and has an inlet and an air aperture;
a sample solution supply part for introducing a sample solution, which is in position apart from said sample solution supply pathway; and
a first filter which is disposed between said sample solution supply pathway and said sample solution supply part for filtering said sample solution, where a filtrate filtered with said first filter is supplied into said sample solution supply pathway due to capillary action, characterized in that the direction in which said sample solution passes through said first filter and the direction in which said filtrate passes through said sample solution supply pathway cross at right angles.
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Accused Products
Abstract
In order to provide a biosensor with high accuracy and excellent response where plasma obtained by filtration of blood rapidly arrives at an electrode system, in a biosensor comprising: an insulating base plate; an electrode system having a working electrode and a counter electrode which are provided on the base plate; a reaction layer including at least oxidoreductase and an electron mediator; a sample solution supply pathway which includes the electrode system and the reaction layer and has an inlet and an air aperture; a sample solution supply part for introducing a sample solution, which is in position apart from the sample solution supply pathway; and a first filter which is disposed between the sample solution supply pathway and the sample solution supply part for filtering the sample solution, where the filtrate filtered with the first filter is supplied into the sample solution supply pathway due to capillary action, the direction in which the sample solution passes through the first filter and the direction in which the filtrate passes through the sample solution supply pathway are made cross at right angles.
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Citations
20 Claims
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1. A biosensor comprising:
- an insulating base plate;
an electrode system having a working electrode and a counter electrode which are provided on said base plate;
a reaction layer including at least oxidoreductase and an electron mediator;
a sample solution supply pathway which includes said electrode system and said reaction layer and has an inlet and an air aperture;
a sample solution supply part for introducing a sample solution, which is in position apart from said sample solution supply pathway; and
a first filter which is disposed between said sample solution supply pathway and said sample solution supply part for filtering said sample solution, where a filtrate filtered with said first filter is supplied into said sample solution supply pathway due to capillary action,characterized in that the direction in which said sample solution passes through said first filter and the direction in which said filtrate passes through said sample solution supply pathway cross at right angles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- an insulating base plate;
Specification