Volume meter testing device and method of use
First Claim
Patent Images
1. A test device adapted to test a concentration of an analyte in a fluid comprising:
- a pickup area having a first volume for receiving the fluid; and
a contiguous cover having a read area, a floor of the read area being a top side of the cover, the read area being in fluid communication with the pickup area, the read area including an island having a gap, the read area further including a vent area adjacent to and surrounding the island, the read area being adapted to receive fluid from the pickup area only after the pickup area is full, the read area containing a reagent adapted to produce a reaction indicative of the concentration of the analyte in the fluid, a thickness of the vent area being greater than a thickness of the gap of the island.
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Abstract
A test device adapted to test a concentration of an analyte in a fluid has a pickup area having a first volume for receiving the fluid. In fluid communication with the pickup area is a read area having a second volume, which is less than the first volume. Since the second volume is less than the first volume, fluid from the pickup area will flow into the read area only after the pickup area is full. The read area also contains a reagent that is adapted to indicate the concentration of the analyte in the fluid.
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Citations
38 Claims
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1. A test device adapted to test a concentration of an analyte in a fluid comprising:
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a pickup area having a first volume for receiving the fluid; and a contiguous cover having a read area, a floor of the read area being a top side of the cover, the read area being in fluid communication with the pickup area, the read area including an island having a gap, the read area further including a vent area adjacent to and surrounding the island, the read area being adapted to receive fluid from the pickup area only after the pickup area is full, the read area containing a reagent adapted to produce a reaction indicative of the concentration of the analyte in the fluid, a thickness of the vent area being greater than a thickness of the gap of the island. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 38)
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20. A test device adapted to test a concentration of an analyte in a fluid, comprising:
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a pickup area having a first gap adapted to use capillary action to draw the fluid into the pickup area; and a contiguous cover having a read area, a bottom of the read area being a top side of the cover, the read area being in fluid communication with the pickup area, the read area including an island and a vent area adjacent to and surrounding the island, the island having a second gap such that the fluid is drawn into the second gap of the read area only after the first gap of the pickup area is entirely filled, the read area containing a reagent adapted to produce a reaction indicative of the concentration of the analyte in the fluid, a thickness of the vent area being greater than a thickness of the second gap of the island. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A test device adapted to test a concentration of an analyte in a fluid, comprising:
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a pickup area having a first volume for receiving the fluid and a first gap adapted to use capillary action to draw the fluid into the pickup area; and a contiguous cover having a read area, a bottom of the read area being a top side of the cover, the read area being in fluid communication with the pickup area, the read area including an island and a vent area adjacent to and surrounding the island, the island having a second gap such that the fluid is drawn into the second gap after the first gap is entirely filled, the read area containing a reagent adapted to produce a reaction indicative of the concentration of the analyte in the fluid, wherein a thickness of the vent area is greater than a thickness of the second gap.
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36. A test device adapted to test a concentration of an analyte in a fluid comprising:
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a pickup area having a first volume for receiving the fluid; and a contiguous cover having a read area, a bottom of the read area being a top side of the cover, the read area being in fluid communication with the pickup area, the read area configured to receive fluid from the pickup area only after the pickup area is full, the read area including a reagent adapted to produce a reaction indicative of the concentration of the analyte in the fluid, the read area further including an island, a capillary gap, and a vent area adjacent to and surrounding the island, the vent area being in fluid communication with the capillary gap, a thickness of the vent area being greater than a thickness of the capillary gap of the island.
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37. A method for determining a concentration of an analyte in a fluid with a test device, the test device comprising a pickup area and a contiguous cover having a read area, a bottom of the read area being a top side of the cover, the read area including an island and a capillary gap, the read area including a reagent and being adjacent to and surrounded by a vent area and being in fluid communication with the pickup area, the method comprising the acts of:
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drawing the fluid into the pickup area, the pickup area having a first volume; filling the pickup area with the fluid; drawing the fluid into the read area after the pickup area is substantially full of the fluid, the read area having a second volume; and allowing air to escape into the vent area, the vent area being in fluid communication with the capillary gap, a thickness of the vent area being greater than a thickness of the capillary gap of the island.
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Specification