Systems and methods for processing analyte sensor data

Abstract

The present invention relates generally to systems and methods for measuring an analyte in a host. More particularly, the present invention relates to systems and methods for processing sensor data, including calculating a rate of change of sensor data and / or determining an acceptability of sensor or reference data.

Description

INCORPORATION BY REFERENCE TO RELATED APPLICATIONS[0001]Any and all priority claims identified in the Application Data Sheet, or any correction thereto, are hereby incorporated by reference under 37 CFR 1.57. This application is a continuation of U.S. application Ser. No. 12 / 732,010, filed Mar. 25, 2010, which is a continuation of U.S. application Ser. No. 11 / 515,443, filed Sep. 1, 2006, now U.S. Pat. No. 8,233,959. U.S. application Ser. No. 11 / 515,443 is a continuation-in-part of U.S. application Ser. No. 11 / 498,410, filed Aug. 2, 2006, which is a continuation-in-part of U.S. application Ser. No. 10 / 648,849, filed Aug. 22, 2003, now U.S. Pat. No. 8,010,174. U.S. application Ser. No. 11 / 498,410 is a continuation-in-part of U.S. application Ser. No. 11 / 007,920, filed Dec. 8, 2004, now U.S. Pat. No. 8,282,549, which claims the benefit of U.S. Provisional Application No. 60 / 528,382, filed Dec. 9, 2003; U.S. Provisional Application 60 / 587,787; filed Jul. 13, 2004; and U.S. Provisional A...

AI Technical Summary

Benefits of technology

The patent describes a method and system for analyzing data from a sensor that measures an analyte in a person's body. The system collects the sensor data and calculates the rate of change in the sensor data over time, without trying to smooth out the data points caused by noise. The processor then smooths the rate of change and the resulting data points to get a better measure of the analyte's movement. This helps to accurately analyze the data and get valuable information about the person's health.

Problems solved by technology

In the diabetic state, the victim suffers from high blood sugar, which can cause an array of physiological derangements associated with the deterioration of small blood vessels, for example, kidney failure, skin ulcers, or bleeding into the vitreous of the eye.

Conventionally, a person with diabetes carries a self-monitoring blood glucose (SMBG) monitor, which typically requires uncomfortable finger pricking methods.

Unfortunately, such time intervals are so far spread apart that the person with diabetes likely finds out too late of a hyperglycemic or hypoglycemic condition, sometimes incurring dangerous side effects.

It is not only unlikely that a person with diabetes will take a timely SMBG value, it is also likely that he or she will not know if his or her blood glucose value is going up (higher) or down (lower) based on conventional method.

This inhibits the ability to make educated insulin therapy decisions.

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