Test sensor and method for manufacturing the same
First Claim
1. A test sensor for use in the determination of an analyte in a liquid sample, the test sensor comprising:
- a base defining a bottom wall and a plurality of side walls of a capillary channel and a reaction area formed in a surface of the base, the capillary channel adapted to move a liquid sample from an inlet to the reaction area;
a carrier having a first surface directly attached to the surface of the base, the carrier being disposed over at least a portion of the capillary channel; and
a test membrane adhered to the first surface of the carrier such that the test membrane does not contact the bottom wall and the plurality of side walls of the capillary channel and the reaction area defined by the base, the test membrane containing a reagent, the test membrane extending from the carrier into the reaction area.
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Accused Products
Abstract
According to one embodiment of the present invention, an optical-based test sensor for use in the determination of an analyte in a liquid sample is disclosed. The test sensor includes a base, a polymer carrier, and a test membrane. The base has a capillary channel formed in a surface of the base that is adapted to move a liquid sample from an inlet to a reaction area formed in the base. The polymer carrier has a lower surface adhered to the surface of the base and is disposed over at least a portion of the capillary channel. The test membrane, which contains a reagent, is adhered to the lower surface of the polymer carrier and extends from the polymer carrier into the reaction area.
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Citations
23 Claims
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1. A test sensor for use in the determination of an analyte in a liquid sample, the test sensor comprising:
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a base defining a bottom wall and a plurality of side walls of a capillary channel and a reaction area formed in a surface of the base, the capillary channel adapted to move a liquid sample from an inlet to the reaction area; a carrier having a first surface directly attached to the surface of the base, the carrier being disposed over at least a portion of the capillary channel; and a test membrane adhered to the first surface of the carrier such that the test membrane does not contact the bottom wall and the plurality of side walls of the capillary channel and the reaction area defined by the base, the test membrane containing a reagent, the test membrane extending from the carrier into the reaction area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 18, 20, 22, 23)
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9. A test sensor for use in the determination of an analyte in a liquid sample, the test sensor comprising:
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a base defining a bottom wall and a plurality of side walls of a capillary channel and a reaction area formed in a surface of the base, the reaction area having a depth formed in the base, the capillary channel adapted to move a liquid sample from an inlet to the reaction area; a carrier having a first surface directly attached to the surface of the base, the carrier being disposed over at least a portion of the capillary channel; and a test membrane adhered to the first surface of the carrier, the test membrane containing a reagent, the test membrane extending from the carrier into the reaction area and having a thickness less than the depth of the reaction area such that the test membrane does not contact the base and a first space is provided between a lower surface of the test membrane and a bottom of the reaction area, wherein a transverse dimension of the test membrane is less than a transverse dimension of the reaction area such that a second space is provided between an edge of the test membrane and an edge of the reaction area. - View Dependent Claims (10, 11, 12, 19, 21)
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13. A test sensor for use in the determination of an analyte in a liquid sample, the test sensor comprising:
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a base defining a bottom wall and a plurality of side walls of a capillary channel and a reaction area formed in a surface of the base, the capillary channel adapted to move a liquid sample from an inlet to the reaction area; a polymer carrier having a first surface directly attached to the surface of the base, the polymer carrier being disposed over at least a portion of the capillary channel and being constructed of a substantially hydrophobic material; and a generally disk-shaped test membrane adhered to the first surface of the polymer carrier such that the test membrane does not contact the bottom wall and the plurality of side walls of the capillary channel and the reaction area defined by the base, the test membrane containing a reagent, the test membrane extending from the polymer carrier into the reaction area. - View Dependent Claims (14, 15, 16, 17)
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Specification