Sensors
First Claim
Patent Images
1. A sensor for determining the concentration of a ketone body in a sample of biological fluid, the sensor comprising:
- a working electrode and a counter electrode;
a first corner of the sensor at the intersection of a first side edge and a distal edge of the sensor and a second corner of the sensor at the intersection of a second side edge and the distal edge of the sensor; and
a sample chamber for receiving biological fluid, wherein the sample chamber only has a first and a second entrance for admitting the biological fluid, the first entrance positioned at the first corner and the second entrance positioned at the second corner,wherein the sample chamber is adapted to receive the biological fluid by contacting the first corner or the second corner of the sensor with the biological fluid.
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Accused Products
Abstract
The subject invention provides devices and methods for the analysis of a body fluid. Embodiments include sensors that are sample-fillable by contacting a corner of the sensor to a sample.
22 Citations
34 Claims
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1. A sensor for determining the concentration of a ketone body in a sample of biological fluid, the sensor comprising:
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a working electrode and a counter electrode; a first corner of the sensor at the intersection of a first side edge and a distal edge of the sensor and a second corner of the sensor at the intersection of a second side edge and the distal edge of the sensor; and a sample chamber for receiving biological fluid, wherein the sample chamber only has a first and a second entrance for admitting the biological fluid, the first entrance positioned at the first corner and the second entrance positioned at the second corner, wherein the sample chamber is adapted to receive the biological fluid by contacting the first corner or the second corner of the sensor with the biological fluid. - View Dependent Claims (2, 3, 4, 5, 33, 34)
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6. A sensor for determining the concentration of a ketone body in a biological fluid sample, the sensor comprising:
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a first side edge, a second side edge, a proximal edge and a distal edge, wherein the distal edge is parallel to the proximal edge; a first corner of the sensor at the intersection of the first side edge and the distal edge of the sensor and a second corner of the sensor at the intersection of the second side edge and the distal edge of the sensor; and a sample chamber adapted to determine the concentration of a ketone body in less than about 1 μ
L of sample, wherein the sample chamber only has a first and a second chamber opening for admitting the sample to the sample chamber;wherein the first chamber opening is positioned at the first corner and the second chamber opening is positioned at the second corner of the sensor. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A ketone body sensor comprising:
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a first substrate separated from a second substrate by a spacer layer and including at least one electrode, the first and second substrates forming a sensor comprising a first side edge opposite to a second side edge, a distal edge opposite and parallel to a proximal edge, wherein the distal edge is shorter than the proximal edge; a first corner of the sensor at the intersection of the first side edge and the distal edge of the sensor and a second corner of the sensor at the intersection of the second side edge and the distal edge of the sensor; a sample chamber; and only a first and a second chamber opening for admitting sample to the sample chamber, wherein the first sample chamber opening is located at the first corner and the second sample chamber opening is located at the second corner of the sensor.
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20. A method for determining a ketone body concentration in a sample of biological fluid, the method comprising:
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a working electrode and a counter electrode; a first corner of the sensor at the intersection of a first side edge and a distal edge of the sensor and a second corner of the sensor at the intersection of a second side edge and the distal edge of the sensor; and a sample chamber for receiving biological fluid, wherein the sample chamber includes at least a portion of the working and counter electrodes and wherein the sample chamber only has a first and a second entrance for admitting the biological fluid, the first entrance positioned at the first corner and the second entrance positioned at the second corner, wherein the sample chamber is adapted to receive the biological fluid by contacting the first corner or the second corner of the sensor with the biological fluid; applying, after connecting the sensor to the meter, an ketone body-containing sample to the analyte sensor by contacting the first or the second corner of the sensor with the sample; and determining the concentration of a ketone body in the sample. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. An integrated device for determining the concentration of a ketone body in sample, the system comprising:
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a housing comprising a sensor and a processor adapted for determining the concentration of a ketone in a sample applied to the sensor, the sensor comprising; a working electrode and a counter electrode; a first corner of the sensor at the intersection of a first side edge and a distal edge of the sensor and a second corner of the sensor at the intersection of a second side edge and the distal edge of the sensor; and a sample chamber, wherein the sample chamber includes at least a portion of the working and counter electrodes and wherein the sample chamber only has a first and a second entrance for admitting sample to the sample chamber, the first entrance positioned at the first corner and the second entrance positioned at the second corner, wherein the sample chamber is adapted to receive the sample by contacting the first corner or the second corner of the sensor with the biological fluid.
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Specification