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Intersession monitoring for blood fluid removal therapy

  • US 9,561,316 B2
  • Filed: 03/20/2012
  • Issued: 02/07/2017
  • Est. Priority Date: 04/29/2011
  • Status: Active Grant
First Claim
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1. A method of using a blood fluid removal system for tracking one or more physiological parameters of a patient, wherein the blood fluid removal system comprises:

  • (a) a blood fluid removal medium configured to remove blood from the patient, wherein the blood enters the medium, a fluid contained in the blood is removed from the blood, and the blood exits the medium;

    (b) one or more control elements configured to control (i) a rate at which the medium removes fluid from the blood or (ii) concentration of electrolytes or pH in the blood that exits the medium;

    (c) one or more sensors configured to monitor the one or more physiological parameters of the patient wherein the physiological parameters are one or more selected from the group consisting of blood pressure, heart rate, pH and electrolyte concentration, the one or more sensors sensing signals from one or more of the blood and a tissue of the patient; and

    (d) control electronics comprising memory and a processor, wherein the control electronics are in operable communication with the one or more sensors and are operably coupled to the one or more control elements, wherein the control electronics are programmed to carry out the method of or for tracking the one or more physiological parameters of the patient, comprising;

    storing system parameters from a first blood fluid removal session in memory;

    acquiring a first set of data regarding the one or more physiological parameters of the patient following the first session but before a second blood fluid removal session;

    storing the first data set in a most effective to date data set in memory;

    associating the first system parameters in an increased effectiveness lookup table with the first data set;

    storing system parameters from the second blood fluid removal session in memory;

    acquiring a second set of data regarding the one or more physiological parameters of the patient following the second blood fluid removal session; and

    if at least one value of the second data set from the second blood fluid removal session is closer to a target value than a corresponding at least one value of the first data set from the first blood fluid removal session;

    replacing the first data set in the most effective to date data set in memory with the second data set;

    storing in the increased effectiveness lookup table data regarding the second data set; and

    associating data regarding the second system parameters with the second data set.

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