System and method for the electrochemical measurement of an analyte employing a remote sensor
First Claim
1. A disposable test element comprising:
- an electrochemical biosensor adapted to react a sample of a patient'"'"'s blood with one or more reagents and to sense an electrical characteristic of the sample during the reaction with the disposable test element not being connected to any metering device, and circuitry operable to receive a wireless input signal from a remote monitor, the wireless input signal including clocking information, the circuitry further operable to utilize the clocking information from the wireless signal in combination with a circuit including the sample to provide clocked output of information indicative of a patient'"'"'s blood glucose and sample quantity information, and provide a wireless signal including the clocked output receivable by the remote monitor with the disposable test element not being connected to any metering device.
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Accused Products
Abstract
A remote measurement system measures the concentrations of analytes in fluid samples. The system includes a metering device that can receive signals from a test strip or alternatively interrogate the test strip to obtain information. The test strip includes an area for receiving a fluid sample and electrochemically producing a current response that is sensed within the fluid sample. The test strip also includes an antenna and a radio frequency signal circuit for transmitting a signal indicative of the current response of a fluid sample to be analyzed. The metering device receives the signal and can convert it into a readable display in some embodiments. Remote electrochemical analysis of a fluid sample is thereby obtained.
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Citations
21 Claims
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1. A disposable test element comprising:
- an electrochemical biosensor adapted to react a sample of a patient'"'"'s blood with one or more reagents and to sense an electrical characteristic of the sample during the reaction with the disposable test element not being connected to any metering device, and circuitry operable to receive a wireless input signal from a remote monitor, the wireless input signal including clocking information, the circuitry further operable to utilize the clocking information from the wireless signal in combination with a circuit including the sample to provide clocked output of information indicative of a patient'"'"'s blood glucose and sample quantity information, and provide a wireless signal including the clocked output receivable by the remote monitor with the disposable test element not being connected to any metering device.
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2. A method comprising:
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providing a sample of biological fluid to a disposable biosensor; reacting the sample with a reagent in the biosensor; sensing a current characteristic of the sample during the reacting; receiving a wireless input signal from a remote monitor, the wireless input signal including timing information; utilizing the timing information to provide output including sample characteristic information and sample quantity information; outputting a wireless output signal including the timed output receivable by the remote monitor; receiving and storing the output information at the remote monitor; transferring the received and stored information from the remote monitor to a processing unit; and determining blood glucose information at the remote monitor or the processing unit or both; wherein said acts of providing, reacting, sensing, receiving, utilizing, and outputting occur with the disposable biosensor not being physically connected to a metering device.
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3. A system comprising:
- a metering device, an in vitro test strip, and a remote intermediate device, the remote intermediate device comprising circuitry operable to wirelessly send and receive signals to and from the test strip;
the test strip comprising circuitry operable to wirelessly send and receive signals to and from the remote intermediate device and a reaction zone for receiving a fluid sample and performing an electrochemical reaction;
wherein the test strip is configured to apply a potential to the reaction zone when a sample is received in the reaction zone, to obtain an electrochemical response of the reaction zone to the potential, and to generate and transmit a first signal corresponding to the electrochemical response to the remote intermediate device; and
wherein the remote intermediate device is configured to receive the first signal from the test strip and provide said first signal to a processing circuitry configured to calculate a concentration of an analyte in the fluid sample based at least in part on said first signal, the processing circuitry being provided on one of the remote intermediate device and the metering device;
the metering device comprising a display and circuitry operable to send and receive signals to and from the remote intermediate device, wherein the remote intermediate device is configured to transfer to the metering device one or both of the first signal or second signals having information relating to the calculated concentration of the analyte, the metering device being configured to display the calculated concentration on the display. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12)
- a metering device, an in vitro test strip, and a remote intermediate device, the remote intermediate device comprising circuitry operable to wirelessly send and receive signals to and from the test strip;
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13. A method comprising:
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(a) providing a sample fluid to a reaction zone of a test strip; (b) reacting the sample fluid with a reagent in the reaction zone; (c) applying a potential to the sample fluid in the reaction zone; (d) activating a clock for generating a timing signal corresponding to the potential; (e) measuring a current response of the sample during the reacting; (f) converting the current response and timing signal into an analog or digital signal; (g) wirelessly transmitting the analog or digital signal to a remote intermediate device; (h) providing the analog or digital signal to a processing circuitry configured to determine concentration of an analyte, the processing circuitry being provided on one of the remote intermediate device and a metering device; (i) using at least the analog or digital signal, determining the concentration of an analyte of the sample fluid; and (j) displaying the concentration on a display of the metering device. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification