Patent ID: 6484046
Filing Date: 2002-11-19
Classification: A61B,C12Q

Abstract:
An electrochemical sensor comprising:a flexible, planar substrate; a first conductive material non-leachably disposed on a first surface of the planar substrate to form one or more working electrodes; one or more contact pads on the first surface and in electrical contact with the one or more working electrodes; a second conductive material non-leachably disposed on one of the first surface and a second surface of the planar substrate to form a counter electrode, a reference electrode, or a counter-reference electrode; a contact pad disposed on the one of the first surface and the second surface and in electrical contact with the counter electrode, reference electrode or counter-reference electrode; an enzyme non-leachably disposed proximate to the working electrode; and an analyte mass transport limiting layer disposed over at least a portion of the working electrode to limit transport of an analyte to the working electrode; wherein the sensor comprises a wide portion and a narrow portion, the narrow portion having a length of 2 cm or less and a width of 2 mm or less, and the narrow portion configured and arranged for subcutaneous implantation into the body of an animal for contact with body fluid of the animal.