Wear-resistant electrochemical test sensor and method of forming the same
View Patent ↗An electrochemical test sensor includes a base, a generally hard electrically-conductive layer, an electrochemically-active layer, and a lid. The electrically-conductive layer is located between the base and the electrochemically-active layer. The electrically-conductive layer and the electrochemically-active layer are made of a different material. The electrically-conductive layer and the electrochemically-active layer form an electrode pattern. The electrochemical test sensor includes a reagent adapted to assist in determining information related to an analyte of a fluid sample.
1. An electrochemical test sensor comprising a base, a conductive layer comprising indium tin oxide, an electrochemically-active layer, and a lid, the conductive layer being located between the base and the electrochemically-active layer, the conductive layer and the electrochemically-active layer being made of a different material, the conductive layer and the electrochemically-active layer forming a plurality of electrodes, a plurality of conductive leads and a plurality of test-sensor contacts, and wherein the electrochemical test sensor includes a reagent adapted to assist in determining information related to an analyte of a fluid sample.
2. The test sensor of claim 1 , further including a spacer, the spacer and the lid assisting in forming a channel in which to receive the fluid, the channel including the reagent.
3. The test sensor of claim 1 , wherein the electrochemically-active layer includes gold, platinum, rhodium, palladium, ruthenium or combinations thereof.
4. The test sensor of claim 1 , wherein the reagent includes glucose oxidase or glucose dehydrogenase.
5. An electrochemical test sensor comprising a base, a conductive layer including indium zinc oxide, an electrochemically-active layer and a lid, the conductive layer being located between the base and the electrochemically-active layer, the conductive layer being made of a different material than the electrochemically-active layer, the conductive layer and the electrochemically-active layer forming a plurality of electrodes, a plurality of conductive leads and a plurality of test-sensor contacts, and wherein the electrochemical test sensor includes a reagent adapted to assist in determining information related to an analyte of a fluid sample.
6. The test sensor of claim 5 , further including a spacer, the spacer and the lid assisting in forming a channel in which to receive the fluid, the channel including the reagent.
7. The test sensor of claim 5 , wherein the electrochemically-active layer includes gold, platinum, rhodium, palladium, ruthenium or combinations thereof.
8. The test sensor of claim 5 , wherein the reagent includes glucose oxidase or glucose dehydrogenase.
9. A method of forming an electrochemical test sensor, the method comprising the acts of:
providing a base;
placing a conductive layer on the base, the conductive layer including indium tin oxide;
placing an electrochemically-active layer on the conductive layer, the electrochemically-active layer being made of a different material than the conductive layer;
forming the electrochemically-active layer and the conductive layer into a plurality of electrodes, a plurality of conductive leads and a plurality of test-sensor contacts; and
applying a second layer to assist in forming a channel in the test sensor, the channel assisting in allowing a fluid sample to contact a reagent located therein.
10. The method of claim 9 , wherein the forming of the plurality of electrodes includes the use of laser-ablating.
11. The method of claim 9 , wherein the second layer is a lid.
12. The method of claim 9 , wherein the second layer is a spacer and further includes applying a lid to the spacer so as to define the channel, the spacer being located between the lid and the base.
13. The method of claim 12 , wherein the channel is a capillary channel.
14. The method of claim 9 , wherein the plurality of electrodes is formed by printing, coating, vapor deposition, sputtering or electrochemical deposition.
15. The method of claim 9 , wherein the electrochemically-active layer includes gold, platinum, rhodium, palladium, ruthenium or combinations thereof.
16. The method of claim 9 , wherein the reagent includes glucose oxidase or glucose dehydrogenase.
17. A method of forming an electrochemical test sensor, the method comprising the acts of:
providing a base;
placing a conductive layer on the base, the conductive layer including indium zinc oxide;
placing an electrochemically-active layer on the conductive layer, the electrochemically-active layer being made of a different material than the conductive layer;
forming the electrochemically-active layer and the conductive layer into a plurality of electrodes, a plurality of conductive leads and a plurality of test-sensor contacts; and
applying a second layer to assist in forming a channel in the test sensor, the channel assisting in allowing a fluid sample to contact a reagent located therein.
18. The method of claim 17 , wherein the forming of the plurality of electrodes includes the use of laser-ablating.
19. The method of claim 17 , wherein the second layer is a lid.
20. The method of claim 17 , wherein the second layer is a spacer and further includes applying a lid to the spacer so as to define the channel, the spacer being located between the lid and the base.
21. The method of claim 20 , wherein the channel is a capillary channel.
22. The method of claim 17 , wherein the plurality of electrodes is formed by printing, coating, vapor deposition, sputtering or electrochemical deposition.
23. The method of claim 17 , wherein the electrochemically-active layer includes gold, platinum, rhodium, palladium, ruthenium or combinations thereof.
24. The method of claim 17 , wherein the reagent includes glucose oxidase or glucose dehydrogenase.