Analyte sensing and response system
First Claim
1. A method of determining a fluid infusion rate for infusing a fluid containing insulin into a user, comprisingusing a glucose detection device to monitor concentration of glucose in the user and generating a sensor output signal based on the monitored concentration,using the sensor output signal to generate a processor input signal,processing the processor input signal using a fading memory proportional derivative algorithm to generate a processor output signal,determining a fluid infusion rate based at least partially on the processor output signal wherein the fluid contains insulin,delivering the fluid containing insulin into the user, anddelivering a glucose-increasing substance to the user when the user'"'"'s glucose concentration is falling at a rate above a pre-determined threshold, and the user'"'"'s glucose concentration has fallen below a pre-determined threshold level.
1 Assignment
0 Petitions
Accused Products
Abstract
Electrochemical systems for measuring an analyte concentration, and correcting any surplus or deficiency in the measured concentration. More specifically, systems for measuring an analyte level in a fluid with an implantable sensor, processing the measurements with an algorithm, and determining an appropriate fluid infusion rate in response to the measurements.
64 Citations
9 Claims
-
1. A method of determining a fluid infusion rate for infusing a fluid containing insulin into a user, comprising
using a glucose detection device to monitor concentration of glucose in the user and generating a sensor output signal based on the monitored concentration, using the sensor output signal to generate a processor input signal, processing the processor input signal using a fading memory proportional derivative algorithm to generate a processor output signal, determining a fluid infusion rate based at least partially on the processor output signal wherein the fluid contains insulin, delivering the fluid containing insulin into the user, and delivering a glucose-increasing substance to the user when the user'"'"'s glucose concentration is falling at a rate above a pre-determined threshold, and the user'"'"'s glucose concentration has fallen below a pre-determined threshold level.
-
6. A method of determining a fluid infusion rate for infusing a fluid containing insulin into a user, comprising
using a glucose detection device to monitor concentration of glucose in the user and generating a sensor output signal based on the monitored concentration, using the sensor output signal to generate a processor input signal, processing the processor input signal using a fading memory proportional derivative algorithm to generate a processor output signal, determining the fluid infusion rate based at least partially on the processor output signal, delivering the fluid containing insulin into the user, and delivering a glucose-increasing substance to the user when the user'"'"'s glucose concentration is falling, the timing and amount of glucose-increasing substance delivered being based on a proportional error of glucose concentration and a derivative error of glucose concentration.
Specification