06801041 is referenced by 368 patents and cites 3 patents.

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.

Title
Sensor having electrode for determining the rate of flow of a fluid
Application Number
10/145837
Publication Number
6801041 (B2)
Application Date
May 14, 2002
Publication Date
October 5, 2004
Inventor
Gerald Urban
Freiburg
US
Uwe Herberth
Kirchzarten
US
Panagiota S Petrou
Kapandriti
US
Uwe Tietjen
Freiburg
US
Gerhard Jobst
Eichstetten
US
Isabella Moser
Eichstetten
US
Shridhara Alva Karinka
Lowell
MA, US
Agent
David L Weinstein
US
Assignee
Abbott Laboratories
IL, US
IPC
G01N 27/02
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