Systems and methods for replacing signal artifacts in a glucose sensor data stream
First Claim
1. In a glucose sensing system comprising a glucose sensor configured for producing an output representative of glucose concentration in a host and processing circuitry configured to process the output, a method for processing data from the output, the method comprising:
- generating, using a processing module, at least one calibrated data stream of glucose concentration values from the glucose sensor output;
calculating, using the processing module, a range of glucose concentration values based at least in part on at least one calibrated historical data stream value, wherein the range of glucose concentration values comprises at least one limit value;
replacing, using the processing module, at least one calibrated data stream value with the at least one limit value when the calibrated data stream value is outside the limit value; and
displaying the limit value to the user of the glucose sensing system.
1 Assignment
0 Petitions
Accused Products
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.
605 Citations
14 Claims
-
1. In a glucose sensing system comprising a glucose sensor configured for producing an output representative of glucose concentration in a host and processing circuitry configured to process the output, a method for processing data from the output, the method comprising:
-
generating, using a processing module, at least one calibrated data stream of glucose concentration values from the glucose sensor output; calculating, using the processing module, a range of glucose concentration values based at least in part on at least one calibrated historical data stream value, wherein the range of glucose concentration values comprises at least one limit value; replacing, using the processing module, at least one calibrated data stream value with the at least one limit value when the calibrated data stream value is outside the limit value; and displaying the limit value to the user of the glucose sensing system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A glucose sensor system for monitoring a glucose concentration in a host, the system comprising:
-
a continuous glucose sensor configured to produce a data stream; a processing module configured to; generate at least one calibrated data stream of glucose concentration values from the data stream; calculate a range of glucose concentration values based at least in part on at least one calibrated historical data stream value, wherein the range of glucose concentration values comprises at least one limit value; and replace the calibrated data stream value with the at least one limit value when the calibrated data stream value is outside the data stream value range; and a display; wherein the system is configured to display at least one of the calibrated data stream value or the limit value to a user of the glucose sensing system. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
Specification