Strip electrode including screen printing of a single layer

Details Strip electrode including screen printing of a single layer Strip electrode including screen printing of a single layer

1994-07-27

1996-04-23

Shay, David M.

Surgery

Truss

Pad

128639, 204403, 204407, 204435, A61B 500

Patent

active

055094104

ABSTRACT:
A sensor system that detects a current representative of a compound in a liquid mixture features a two-electrode strip adapted for releasable attachment to signal readout circuitry. The strip comprises an elongated support (preferably flat) adapted for releasable attachment to the readout circuitry; a first conductor and a second conductor each extend along the support and comprise means for connection to the circuitry. An active electrode, positioned to contact the liquid mixture and the first conductor, comprises a deposit of an enzyme capable of catalyzing a reaction involving the compound and (preferably) an electron mediator, capable of transferring electrons between the enzyme-catalyzed reaction and the first conductor. A reference electrode is positioned to contact the mixture and the second conductor. The system includes circuitry adapted to provide an electrical signal representative of the current. The two-electrode strip is manufactured, e.g., by screen printing an admixture of enzyme, a conductive material, and a mediator as a single layer onto the substrate.

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