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System for providing blood glucose measurements to an infusion device

  • US 8,568,357 B2
  • Filed: 05/07/2012
  • Issued: 10/29/2013
  • Est. Priority Date: 07/24/2002
  • Status: Active Grant
First Claim
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1. An infusion system for infusing a fluid into a body of a user, the infusion system comprising:

  • a characteristic meter device including;

    a meter device housing to be carried by the user;

    a test strip receptacle coupled to the meter device housing for receiving and testing an analyte from the user to determine a concentration of the analyte in the user;

    a meter device processor contained in the meter device housing and coupled to the receptacle for processing the determined concentration of the analyte from the receptacle;

    a meter device indicator to indicate the determined concentration of the analyte in the user; and

    a meter device communication system contained in the meter device housing and coupled to the meter device processor for transmitting a communication, wherein the meter device processor further determines an age of the determined concentration of the analyte in the user based on an amount of time that has elapsed since the concentration of the analyte in the user was determined, and the meter device communication system transmits the communication including data indicative of the determined concentration of the analyte in the user and the age of the determined concentration of the analyte in the user, and wherein the meter device indicator further indicates when the communication is being transmitted from the meter device communication system; and

    an infusion device including;

    an infusion device housing to be carried by the user;

    a drive mechanism contained in the infusion device housing and operatively coupled with a reservoir containing the fluid for infusing the fluid into the body of the user;

    an infusion device communication system contained in the infusion device housing for receiving the communication including the data indicative of the determined concentration of the analyte in the user and the age of the determined concentration of the analyte in the user from the meter device communication system;

    an infusion device processor contained in the infusion device housing and coupled to the infusion device communication system for processing the received data indicative of the determined concentration of the analyte in the user and the age of the determined concentration of the analyte in the user and for controlling the infusion device;

    an infusion device indicator to indicate the determined concentration of the analyte in the user when the communication including the data indicative of the determined concentration of the analyte in the user has been received by the infusion device communication system from the meter device communication system; and

    a bolus estimator used in conjunction with the infusion device processor for calculating an estimated amount of fluid to be infused into the body of the user based on the received data indicative of the determined concentration of the analyte in the user and a target concentration of the analyte in the user, wherein the infusion device processor determines an updated age of the determined concentration of the analyte in the user based on the age of the determined concentration of the analyte in the user received from the meter device communication system and an amount of time that has elapsed since the communication including the data indicative of the determined concentration of the analyte in the user and the age of the determined concentration of the analyte in the user was received from the meter device communication system, and prevents the bolus estimator from calculating the estimated amount of fluid to be infused based on the determined concentration of the analyte in the user if the updated age of the determined concentration of the analyte in the user exceeds a predetermined amount of time, and causes the bolus estimator to calculate the estimated amount of fluid to be infused based on the determined concentration of the analyte in the user if the updated age of the determined concentration of the analyte in the user does not exceed the predetermined amount of time, and wherein the infusion device indicator further indicates the estimated amount of fluid to be infused that has been calculated.

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