METHOD AND FUEL CELL FOR ELECTROCHEMICAL MEASUREMENT OF ANALYTE CONCENTRATION IN VIVO
First Claim
1. A method for electrochemical measurement of an analyte concentration in vivo, comprising:
- providing a fuel cell comprising an enzyme layer, an anode and a cathode;
providing to the fuel cell a sample fluid having the analyte;
using the fuel cell to catalytically convert the analyte to be measured with an enzyme contained in the enzyme layer, wherein the catalytic conversion generates a fuel for the fuel cell which is oxidized on the anode and is reduced on the cathode; and
generating an electrical voltage between the anode and the cathode, said voltage corresponding to the concentration of the analyte.
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Accused Products
Abstract
The invention relates to a method for the electrochemical measurement of an analyte concentration in vivo, comprising a fuel cell with which the analyte to be measured is reacted catalytically with an enzyme contained in an enzyme layer and which supplies an electrical voltage, dependent on the analyte concentration to be measured, between an anode and a cathode, which voltage is measured. In the catalytic reaction of the analyte to be measured in the enzyme layer, a product is generated which, as fuel of the fuel cell, oxidizes on the anode and is reduced on the cathode. The invention further relates to a fuel cell for such a method.
3 Citations
16 Claims
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1. A method for electrochemical measurement of an analyte concentration in vivo, comprising:
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providing a fuel cell comprising an enzyme layer, an anode and a cathode; providing to the fuel cell a sample fluid having the analyte; using the fuel cell to catalytically convert the analyte to be measured with an enzyme contained in the enzyme layer, wherein the catalytic conversion generates a fuel for the fuel cell which is oxidized on the anode and is reduced on the cathode; and generating an electrical voltage between the anode and the cathode, said voltage corresponding to the concentration of the analyte. - View Dependent Claims (2, 3, 4)
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5. A fuel cell, comprising:
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an anode and a cathode, the cathode having a surface made of a different material than that of the anode; an enzyme layer containing an enzyme for the catalytic conversion of a substance occurring in the human body, the enzyme layer forming a diffusion path to the anode and to the cathode for a fuel product generated by catalytic conversion of the substance, the fuel cell adapted to oxidize the fuel product on the anode and reduce it on the cathode. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification