Electrochemical Test Sensor With Light Guide
First Claim
1. An electrochemical test sensor for detecting the concentration of an analyte in a fluid test sample, the electrochemical test sensor comprising:
- a base that provides a flow path for the fluid test sample having on its surface a counter electrode and a working electrode adapted to electrically communicate with a detector of electrical current;
a dielectric layer forming a dielectric window therethrough;
a reagent layer including an enzyme that is adapted to react with the analyte; and
a lid adapted to mate with the base and to assist in forming a capillary space with an opening for the introduction of the fluid test sample thereto,wherein the lid includes a light guide area adapted to transmit light from a first end of the test sensor towards the capillary space.
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Accused Products
Abstract
An electrochemical test sensor for detecting the analyte concentration of a fluid test sample includes a base, a dielectric layer, a reagent layer, a light guide area, and a lid. The base provides a flow path for the test sample having on its surface a counter electrode and a working electrode adapted to electrically communicate with a detector of electrical current. The dielectric layer forms a dielectric window therethrough. The reagent layer includes an enzyme that is adapted to react with the analyte. The lid is adapted to mate with the base and to assist in forming a capillary space with an opening for the introduction of the test sample thereto. The light guide area transmits light towards the capillary space.
19 Citations
29 Claims
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1. An electrochemical test sensor for detecting the concentration of an analyte in a fluid test sample, the electrochemical test sensor comprising:
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a base that provides a flow path for the fluid test sample having on its surface a counter electrode and a working electrode adapted to electrically communicate with a detector of electrical current; a dielectric layer forming a dielectric window therethrough; a reagent layer including an enzyme that is adapted to react with the analyte; and a lid adapted to mate with the base and to assist in forming a capillary space with an opening for the introduction of the fluid test sample thereto, wherein the lid includes a light guide area adapted to transmit light from a first end of the test sensor towards the capillary space. - View Dependent Claims (3, 4, 7, 8, 9, 10)
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2. (canceled)
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5-6. -6. (canceled)
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11. An electrochemical test sensor for detecting the concentration of an analyte in a fluid test sample, the electrochemical test sensor comprising:
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a base that provides a flow path for the fluid test sample having on its surface a counter electrode and a working electrode adapted to electrically communicate with a detector of electrical current; a dielectric layer forming a dielectric window therethrough; a reagent layer including an enzyme that is adapted to react with the analyte; a lid adapted to mate with the base and to assist in forming a capillary space with an opening for the introduction of the fluid test sample thereto; and a light guide layer adapted to transmit light from a first end of the test sensor towards the capillary space, wherein the light guide layer, the dielectric layer, and the reagent layer are located between the base and the lid. - View Dependent Claims (12, 13, 14, 15, 17, 18, 19)
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16. (canceled)
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20. (canceled)
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21. A method for determining the concentration of an analyte in a fluid sample with a test sensor, the method comprising the acts of:
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providing an electrochemical test sensor including a base, a dielectric layer, a reagent layer, a light guide area, and a lid, the base providing a flow path for the fluid test sample having on its surface a counter electrode and a working electrode adapted to electrically communicate with a detector of electrical current, the dielectric layer forming a dielectric window therethrough, the reagent layer including an enzyme that is adapted to react with the analyte, the lid being adapted to mate with the base and to assist in forming a capillary space with an opening for the introduction of the fluid test sample thereto, the light guide area being adapted to transmit light through the light guide area towards the capillary space, the dielectric layer and the reagent layer being located between the base and the lid; transmitting light through the light guide area towards the fluid sample; illuminating the fluid sample with the light transmitting through the light guide area; contacting the reagent layer with the fluid sample via the capillary space; generating an electrical signal in the test sensor in response to the presence of the analyte; and determining a level of the analyte from the electrical signal. - View Dependent Claims (22, 23, 24, 25, 26, 28, 29)
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27. (canceled)
Specification