Disposable blood test device
First Claim
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1. A self-calibrating, disposable blood test device insertable in a meter, the test device comprising:
- a substrate configured for carrying a chemical reagent; and
circuitry formed on the substrate, the circuitry comprising;
a sensor portion associated with the chemical reagent to enable measurement of at least one of a presence and a concentration of a blood analyte, the sensor portion including an electrode sensor;
an input/output pad connected to the electrode sensor; and
an additional input/output pad connected to an information storage portion that is connected in parallel with the electrode sensor;
wherein the information storage portion is configured to store information indicative of a property of the chemical reagent for calibration of the meter, the information storage portion including a plurality of impedance elements including at least one of;
a plurality of inductors arranged in series;
or a plurality of capacitors arranged in parallel, wherein each impedance element includes a region that may be physically altered by at least one of punching, drilling, or shorting via fusible link, to create a short circuit or open circuit, in order to activate or deactivate the impedance elementwherein the information is stored by activating or deactivating a select number of the impedance elements in a determinable order, which creates a characteristic impedance between the input/output pad and the additional input/output pad that is measurable by the meter and which corresponds to at least one calibration value that is indicative of the property of the chemical reagent;
and wherein the impedance elements within the information storage portion are arranged such that 2N different potential characteristic impedances may be produced, wherein N is the number of impedance elements.
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Abstract
A disposable blood test device comprises a substrate configured for carrying a chemical reagent and circuitry formed on the substrate. The circuitry comprises a sensor portion associated with the chemical reagent to enable measurement of at least one of a presence and a concentration of a blood analyte, and an information storage portion configured to store information indicative of a property of the chemical reagent.
51 Citations
13 Claims
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1. A self-calibrating, disposable blood test device insertable in a meter, the test device comprising:
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a substrate configured for carrying a chemical reagent; and circuitry formed on the substrate, the circuitry comprising; a sensor portion associated with the chemical reagent to enable measurement of at least one of a presence and a concentration of a blood analyte, the sensor portion including an electrode sensor; an input/output pad connected to the electrode sensor; and an additional input/output pad connected to an information storage portion that is connected in parallel with the electrode sensor; wherein the information storage portion is configured to store information indicative of a property of the chemical reagent for calibration of the meter, the information storage portion including a plurality of impedance elements including at least one of;
a plurality of inductors arranged in series;
or a plurality of capacitors arranged in parallel, wherein each impedance element includes a region that may be physically altered by at least one of punching, drilling, or shorting via fusible link, to create a short circuit or open circuit, in order to activate or deactivate the impedance elementwherein the information is stored by activating or deactivating a select number of the impedance elements in a determinable order, which creates a characteristic impedance between the input/output pad and the additional input/output pad that is measurable by the meter and which corresponds to at least one calibration value that is indicative of the property of the chemical reagent; and wherein the impedance elements within the information storage portion are arranged such that 2N different potential characteristic impedances may be produced, wherein N is the number of impedance elements. - View Dependent Claims (2, 3, 4, 5, 12, 13)
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6. A method of manufacturing a test device insertable in a meter for the detection of a blood analyte, the method comprising:
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forming circuitry on a substrate of the test device, the substrate configured for carrying a chemical reagent, and the circuitry including; a sensor portion associated with the chemical reagent to enable measurement of at least one of a presence and a concentration of a blood analyte, the sensor portion including an electrode sensor; an input/output pad connected to the electrode sensor; and an additional input/output pad connected to an information storage portion that is connected in parallel with the electrode sensor; wherein the information storage portion is configured to store information indicative of a property of the chemical reagent for calibration of the meter, the information storage portion including a plurality of impedance elements including at least one of;
a plurality of inductors arranged in series;
or a plurality of capacitors arranged in parallel, wherein each impedance element includes a region that may be physically altered by at least one of punching, drilling, or shorting via fusible link, to create a short circuit or open circuit, in order to activate or deactivate the impedance elementdepositing the chemical reagent on the sensor portion that enables detection of the blood analyte; and storing information in the information storage portion; wherein the information is stored by activating or deactivating a select number of the impedance elements in a determinable order, which creates a characteristic impedance between the input/output pad and the additional input/output pad that is measurable by the meter and which corresponds to at least one calibration value that is indicative of the property of the chemical reagent; and wherein the impedance elements within the information storage portion are arranged such that 2N different potential characteristic impedances may be produced, wherein N is the number of impedance elements. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification