Sensor for in vitro determination of glucose
First Claim
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1. A sensor for the in vitro determination of glucose level in a sample, the sensor comprising:
- a substrate comprising a first recessed channel;
a first conductive material to provide an electrode disposed in the recessed channel on the substrate to substantially fill the channel such that the substrate and the conductive material form a substantially flat surface,wherein a catalyst is mixed or dispersed in said first conductive material,wherein the catalyst includes an enzyme, wherein the enzyme is mixed in a carbon ink to form a mixture,wherein the sensor generates an electrical signal associated with a level of glucose in a volume sample of about 1 microliter or less.
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Abstract
A process for the manufacture of small sensors with reproducible surfaces, including electrochemical sensors. One process includes forming channels in the surface of a substrate and disposing a conductive material in the channels to form an electrode. The conductive material can also be formed on the substrate by other impact and non-impact methods. In a preferred embodiment, the method includes cutting the substrate to form a sensor having a connector portion and a transcutaneous portion, the two portions having edges that define one continuous straight line.
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Citations
15 Claims
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1. A sensor for the in vitro determination of glucose level in a sample, the sensor comprising:
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a substrate comprising a first recessed channel; a first conductive material to provide an electrode disposed in the recessed channel on the substrate to substantially fill the channel such that the substrate and the conductive material form a substantially flat surface, wherein a catalyst is mixed or dispersed in said first conductive material, wherein the catalyst includes an enzyme, wherein the enzyme is mixed in a carbon ink to form a mixture, wherein the sensor generates an electrical signal associated with a level of glucose in a volume sample of about 1 microliter or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification