Systems 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 sensor data receiving module that receives a signal from a continuous glucose sensor over a period of time, the signal comprising sensor data indicative of measured glucose concentrations; and
a processor configured to form two different conversion functions, to select one of the conversion functions depending on an estimated glucose value based on a first portion of the sensor data, and to convert a second, subsequent portion of the sensor data from the continuous glucose sensor into estimated glucose values using the selected conversion function.
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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.
639 Citations
9 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 sensor data receiving module that receives a signal from a continuous glucose sensor over a period of time, the signal comprising sensor data indicative of measured glucose concentrations; and a processor configured to form two different conversion functions, to select one of the conversion functions depending on an estimated glucose value based on a first portion of the sensor data, and to convert a second, subsequent portion of the sensor data from the continuous glucose sensor into estimated glucose values using the selected conversion function. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification