Method and apparatus for providing leak detection in data monitoring and management systems
First Claim
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1. A glucose monitoring apparatus, comprising:
- an interface circuit coupled to at least one electrode of a transcutaneously positioned glucose sensor;
a leak detection circuit operatively coupled to the at least one electrode; and
a processor operatively coupled to the interface circuit and the leak detection circuit, the processor configured to generate and transmit a leak detection test signal to the interface circuit, wherein the interface circuit is configured to transfer the leak detection test signal from the processor to the at least one electrode, wherein the leak detection circuit is configured to detect a leakage current that results from the transmission of the leak detection test signal to the at least one electrode, wherein the leak detection circuit is further configured to generate a leakage signal and transmit the leakage signal to the processor upon detection of a leakage current, and wherein the processor is further configured to receive the leakage signal from the leak detection circuit in response to the leak detection test signal.
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Abstract
Method and apparatus for providing a leak detection circuit for a data monitoring and management system using the guard trace of a glucose sensor by applying a leak detection test signal to determine whether a leakage current is present is provided. The leak detection circuit may include an interface circuit, such as a capacitor, coupled to the guard trace to detect the leakage current when the leak detection test signal is applied to the guard trace, such that the user or patient using the data monitoring and management system, such as glucose monitoring systems, is notified of a failed sensor and prompted to replace the sensor.
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Citations
25 Claims
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1. A glucose monitoring apparatus, comprising:
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an interface circuit coupled to at least one electrode of a transcutaneously positioned glucose sensor; a leak detection circuit operatively coupled to the at least one electrode; and a processor operatively coupled to the interface circuit and the leak detection circuit, the processor configured to generate and transmit a leak detection test signal to the interface circuit, wherein the interface circuit is configured to transfer the leak detection test signal from the processor to the at least one electrode, wherein the leak detection circuit is configured to detect a leakage current that results from the transmission of the leak detection test signal to the at least one electrode, wherein the leak detection circuit is further configured to generate a leakage signal and transmit the leakage signal to the processor upon detection of a leakage current, and wherein the processor is further configured to receive the leakage signal from the leak detection circuit in response to the leak detection test signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method, comprising:
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providing at least one electrode on a glucose sensor configured for transcutaneous positioning; operatively coupling an interface circuit and a leak detection circuit to the at least one electrode and a processor; generating, using the processor, a leak detection test signal; transmitting the leak detection test signal to the interface circuit; transferring, using the interface circuit, the leak detection test signal to the at least one electrode; detecting, using the leak detection circuit, a leakage current that results from the transmission of the leak detection test signal to the at least one electrode; generating, using the leak detection circuit, a leakage signal and transmitting the leakage signal to the processor upon detection of a leakage current; and receiving, using the processor, the leakage signal from the leak detection circuit in response to the leak detection test signal. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification