Analyte detection meter and associated method of use
Inventors
Iyengar, Sridhar • Harding, Ian • Williams, Richard • Cai, Kevin
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-10168313-B2
Publication Date
2019-01-01
Expiration Date
Abstract
A method for obtaining information encoded on an electrochemical test strip is provided. The test strip has two electrodes disposed within a sample space and the information is encoded on the test strip prior to introduction of liquid sample. The method includes the step of introducing sample to the sample space so that the sample is in contact with the two electrodes within the sample space. In another step a value is determined that is representative of the double layer capacitance of the test strip and/or the equivalent capacitance of the test strip. The determined value is then translated into information reflecting a characteristic of the test strip prior to introduction of sample.
Core Innovation
The invention provides an electrochemical analyte meter/reader that obtains characteristic information encoded on an electrochemical test strip. The test strip includes two electrodes disposed within a sample space, and the characteristic information reflects a characteristic of the test strip at the time of manufacture and prior to introduction of a sample. The method introduces sample to the sample space so that the sample is in contact with the two electrodes, thereby enabling an electrical measurement while the sample is present.
While the sample is present within the sample space, the system determines double layer capacitance or equivalent capacitance of the test strip. The determined capacitance value is then translated into information reflecting the characteristic information encoded on the test strip. This translation converts a capacitance determination into strip characteristic information that is associated with the strip’s manufactured state rather than with the sample itself.
The translated characteristic information is used to control how analyte determination information is used. In an analyte determination method, the system makes a determination of an analyte in the sample and uses the translated characteristic information to modify a result of the analyte determination. Alternatively, in an analyte determination system, the system performs an action selected from modifying the analyte result or generating and displaying an error message to a user based on the translated characteristic information.
Claims Coverage
Three independent claims are present. Across the independent claims, the inventive focus is on determining double layer capacitance or equivalent capacitance when sample is present, translating that measurement into characteristic information encoded on the strip prior to sample introduction, and using the translated characteristic information to modify an analyte result or generate and display an error message.
Translate sample-present capacitance into pre-sample strip characteristic information
A method for obtaining characteristic information encoded on an electrochemical test strip having two electrodes disposed within a sample space, wherein the characteristic information reflects a characteristic of the test strip at the time of manufacture and prior to introduction of a sample, comprising introducing sample to the sample space so that the sample is in contact with two electrodes within the sample space; determining double layer capacitance or equivalent capacitance of the test strip when the sample is present within the sample space; and translating the value determined into information reflecting the characteristic information.
Use translated characteristic information to modify an analyte result
A method for determining analyte in a sample in contact with two electrodes within a sample space of an electrochemical test strip, wherein the test strip has characteristic information encoded thereon reflecting a characteristic of the test strip at the time of manufacture and prior to introduction of a sample, comprising introducing sample to the sample space; determining double layer capacitance or equivalent capacitance of the test strip when the sample is present; translating the determined value into information reflecting the characteristic of the test strip prior to introduction of sample; making a determination of an analyte in the sample; and using the characteristic information translated to modify a result of the analyte determination.
Perform an action based on translated capacitance-derived characteristic information
An analyte determination system comprising a test strip received within a meter, the test strip having two electrodes disposed within a sample space and characteristic information encoded thereon reflecting a characteristic of the test strip at the time of manufacture and prior to introduction of sample; and wherein the meter comprises communications means and a processor and instructions for making a determination of double layer capacitance or equivalent capacitance when a sample is present, making a determination of an analyte in the sample, translating the determined capacitance into information reflecting the characteristic of the test strip at the time of manufacture prior to introduction of sample, and performing an action based upon the translated characteristic information, wherein the action is selected from modifying the result of the analyte determination and generating and displaying an error message to a user.
The claim coverage centers on determining capacitance while sample is present, translating that capacitance into strip characteristic information encoded prior to sample introduction, and using the translated characteristic information to modify the analyte result or to generate and display an error message.
Stated Advantages
Enables modifying a result of the determination of the analyte in the sample using characteristic information translated from capacitance determined while sample is present.
Enables generating and displaying an error message to a user based on the characteristic information translated from the measured double layer capacitance or equivalent capacitance.
Documented Applications
An electrochemical analyte determination system in which a meter receives a test strip and communicates a result to a user while using capacitance-derived characteristic information to modify an analyte result or generate and display an error message.
Interested in licensing this patent?