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AssigneeAbbott Laboratories
InventorsShridhara Alva Karinka, Isabella Moser, Gerhard Jobst, Uwe Tietjen, Panagiota S. Petrou, Uwe Herberth, Gerald Urban
Estimating the term…
Sensors that are capable measuring the rate of flow of a fluid that passes over the electrodes of the sensor. In these sensors, an electrode, designated the flow rate-determining electrode, is used in conjunction with the conventional electrodes, e.g., the working electrode, the reference electrode, and the counter electrode, to determine the rate of flow of the fluid. In one aspect, this invention provides a sensor for measuring the concentration of an analyte in a sample of fluid when the sample flows continuously over the electrodes of the sensor, especially when the rate of flow of the sample is relatively low. In another aspect, this invention provides a method for measuring the concentration of an analyte in a sample of fluid, wherein the rate of flow of the sample varies during the period of time that the sensor is in place. In a preferred embodiment, the sensor employs four electrodes, namely, a working electrode, a reference electrode, a counter electrode, and a flow rate-determining electrode. Alternatively, a single electrode that performs both the function of the reference electrode and the function of the counter electrode can replace the reference electrode and the counter electrode. In addition, a dummy electrode or a blank electrode can be used to compensate for interference from electrochemically active species. The reagent(s) specific to the analyte of interest is required to be deposited on the working electrode.
A sensor for determining the rate of flow of a fluid containing an analyte of interest, comprising a channel through which said fluid flows, said channel constructed so that said fluid is capable of coming into contact with:
A sensor for determining the rate of flow of a fluid containing an analyte of interest, comprising a channel through which said fluid flows, said channel constructed so that said fluid is capable of coming into contact with:
A method for determining the rate of flow of a sample of fluid in a sensor having a channel, and the direction of flow said sample of fluid in said sensor, wherein said sample of fluid flows in said channel, said method comprising the steps of:
A method for determining the rate of flow of a sample of fluid in a sensor having a channel, and the direction of flow of said sample of fluid in said sensor, wherein said sample of fluid flows in said channel, said method comprising the steps of:
A sensor for determining the rate of flow of a fluid containing an analyte of interest, said sensor comprising a channel through which said fluid flows, said channel constructed so that said fluid is capable of coming into contact with:
A sensor for determining the rate of flow of a fluid containing an analyte of interest, said sensor comprising a channel through which said fluid flows, said channel constructed so that said fluid is capable of coming into contact with:
Dependencies are inferred from the claim text.