Biosensor
First Claim
Patent Images
1. A biosensor comprising:
- a first layer and a second layer, the first and second layers being fixed together by a third layer, a working electrode provided on the first layer;
the first, second, and third layers forming a sample receiving space, the sample receiving space comprising a sample receiving opening;
a protrusion extending from the sample receiving opening for aiding in delivery of a biological fluid sample to the sample receiving space, wherein the protrusion is formed only by each of the first and second layers;
andan enzyme reaction layer in the sample receiving space,wherein the biosensor is capable of analysis of a sample having a volume of no more than about 1.0 μ
L.
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Abstract
A biosensor comprises a space part for sucking and housing a sample formed of two upper and lower plates, the two plates being stuck together by an adhesive layer, the space part for sucking and housing the sample being constituted so as to be partially opened in the peripheral part and partially closed by the adhesive layer, and has a working electrode having at least glucose oxidase immobilized thereon and a counter electrode on the same plane of the plate.
43 Citations
45 Claims
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1. A biosensor comprising:
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a first layer and a second layer, the first and second layers being fixed together by a third layer, a working electrode provided on the first layer; the first, second, and third layers forming a sample receiving space, the sample receiving space comprising a sample receiving opening; a protrusion extending from the sample receiving opening for aiding in delivery of a biological fluid sample to the sample receiving space, wherein the protrusion is formed only by each of the first and second layers; and an enzyme reaction layer in the sample receiving space, wherein the biosensor is capable of analysis of a sample having a volume of no more than about 1.0 μ
L. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A biosensor comprising:
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a first layer and a second layer, the first and second layers being fixed together by a third layer; the first, second, and third layers forming a sample receiving space, the sample receiving space comprising a sample receiving opening; a protrusion extending from the sample receiving opening for aiding in delivery of a biological fluid sample to the sample receiving space, wherein the protrusion is formed by each of the first and second layers and wherein the protrusion is narrower than the sample receiving opening; and an enzyme reaction layer in the sample receiving space, wherein the biosensor is capable of analysis of a sample having a volume of no more than about 1.0 μ
L. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A method of determining a concentration of an analyte in a subject, the method comprising:
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contacting body fluid of the subject with a biosensor to generate an electrical signal, the biosensor comprising; a first layer and a second layer, the first and second layers being fixed together by a third layer, a working electrode provided on the first layer; the first, second, and third layers providing a sample receiving space, the sample receiving space comprising a sample receiving opening, a protrusion extending from the sample receiving opening for aiding in delivery of the body fluid to the sample receiving space, wherein the protrusion is formed only by each of the first and second layers; and an enzyme reaction layer in the sample receiving space, wherein the biosensor is capable of analysis of a sample having a volume of no more than about 1.0 μ
L; anddetermining from the generated electrical signal a concentration of an analyte in body fluid. - View Dependent Claims (41, 42, 43, 44, 45)
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Specification