System and methods for replacing signal artifacts in a glucose sensor data stream
First Claim
1. A system for processing data signals obtained from a glucose sensor, the system comprising:
- a receiving module that receives a signal from a glucose sensor over a period of time;
a pressure detector configured to generate a signal indicative of a measured pressure within the glucose sensor; and
a processor module comprising programming that when executed by a processor configures the processor module to detect transient non-glucose related signal artifacts based at least in part on the signal from the glucose sensor and the signal from the pressure detector and output to an external device or display estimated glucose values in response to the detection of the detected transient non-glucose related signal artifacts.
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Abstract
Systems and methods for minimizing or eliminating transient non-glucose related signal noise due to non-glucose rate limiting phenomenon such as ischemia, pH changes, temperatures changes, and the like. The system monitors a data stream from a glucose sensor and detects signal artifacts that have higher amplitude than electronic or diffusion-related system noise. The system replaces some or the entire data stream continually or intermittently including signal estimation methods that particularly address transient signal artifacts. The system is also capable of detecting the severity of the signal artifacts and selectively applying one or more signal estimation algorithm factors responsive to the severity of the signal artifacts, which includes selectively applying distinct sets of parameters to a signal estimation algorithm or selectively applying distinct signal estimation algorithms.
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Citations
15 Claims
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1. A system for processing data signals obtained from a glucose sensor, the system comprising:
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a receiving module that receives a signal from a glucose sensor over a period of time; a pressure detector configured to generate a signal indicative of a measured pressure within the glucose sensor; and a processor module comprising programming that when executed by a processor configures the processor module to detect transient non-glucose related signal artifacts based at least in part on the signal from the glucose sensor and the signal from the pressure detector and output to an external device or display estimated glucose values in response to the detection of the detected transient non-glucose related signal artifacts. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for processing data signals obtained from a glucose sensor, the method comprising:
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receiving, using receiving module, a signal from a glucose sensor over a period of time; generating, using a pressure detector, a signal indicative of a measured pressure within the glucose sensor; detecting, using a processor module, transient non-glucose related signal artifacts based at least in part on the signal from the glucose sensor and the signal from the pressure detector; and outputting, using the processor module, to an external device or display estimated glucose values in response to the detection of the detected transient non-glucose related signal artifacts. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification