US 11,679,192 B2
Apparatus for extracorporeal treatment of blood and method of control of a blood-warming device in an extracorporeal blood treatment apparatus
Dominique Pouchoulin, Tramoyes (FR)
Assigned to Gambro Lundia AB, Lund (SE)
Filed by GAMBRO LUNDIA AB, Lund (SE)
Filed on May 20, 2020, as Appl. No. 16/879,089.
Application 16/879,089 is a continuation of application No. 16/523,117, filed on Jul. 26, 2019, granted, now 10,716,888.
Application 16/523,117 is a continuation of application No. 15/510,302, granted, now 10,398,827, issued on Sep. 3, 2019, previously published as PCT/EP2015/069497, filed on Aug. 26, 2015.
Claims priority of application No. 14184700 (EP), filed on Sep. 15, 2014.
Prior Publication US 2020/0282126 A1, Sep. 10, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 1/36 (2006.01); A61M 1/16 (2006.01)
CPC A61M 1/369 (2013.01) [A61M 1/166 (2014.02); A61M 1/1629 (2014.02); A61M 2205/3372 (2013.01); A61M 2205/505 (2013.01); A61M 2205/52 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling a warming device in an extracorporeal blood treatment apparatus comprising:
providing the extracorporeal blood treatment apparatus comprising:
an extracorporeal blood circuit having a treatment unit, a blood withdrawal line connected to a blood inlet of the treatment unit, and a blood return line connected to a blood outlet of the treatment unit,
a blood pump configured for controlling blood flow rate flowing through at least one of said blood withdrawal line and blood return line, and
an infusion line connected to the extracorporeal blood circuit, wherein the infusion line is connected to the extracorporeal blood circuit at a junction point positioned downstream of a blood heating zone in the extracorporeal blood circuit;
receiving a first value representative of a desired blood temperature at an end of the blood return line, wherein the end of the blood return line is configured to be connected to a venous vascular access of a patient;
receiving a first signal relating to a flow rate of an infusion fluid in said infusion line;
calculating a set point value of an operating parameter to be imposed on a warming device configured to heat the blood heating zone of the extracorporeal blood circuit in order to maintain a desired blood temperature at an end of the blood return line;
wherein calculating the set point value is based on input parameters comprising the first value representative of the desired blood temperature and at least one other input parameter selected from:
the first signal, and
a second value representative of a temperature of said infusion fluid in said infusion line.