Fresenius Medical Care Deutschland Gmbh

Sören Gronau

Martin Lauer

Dejan Nikolic

Manfred Weis

Joachim Manke

Joachim Noack

Jürgen Häcker

Ralf Müller

Götz Günther

Max Fischer

Ingo SCHÄFER

Jürgen Haecker

The invention relates to an extracorporeal blood treatment device for carrying out an extracorporeal blood treatment, in which blood flows in an extracorporeal blood circuit A through the blood chamberof a dialyserwhich is divided by a semi-permeable membraneinto the blood chamberand a dialysate chamber. The invention further relates a method for monitoring the integrity of a dialyser. The blood treatment device provides a preparation mode in preparation for the blood treatment, in which the dialysate chamberof the dialyser(filter) is filled with a liquid, while the blood chamberis not filled with blood, and a treatment mode following the preparation mode, in which blood is conveyed through the blood chamber. For monitoring the integrity of the dialyser, in the preparation mode the fluid system B including the dialysate chamber, or a portion of the fluid system including the dialysate chamber, is filled with a liquid. At this time, however, the blood chamberis not filled with blood. After the membrane of the dialyserhas been wetted with liquid, liquid is removed from the fluid system B including the dialysate chambersuch that a low pressure p is established in the fluid system. The control and arithmetic unitof the blood treatment device is so configured that the increase in the amount of the low pressure p, measured by means of a pressure measuring apparatus, in a given time interval is determined, and the leakage rate LR of the fluid system is determined from the increase in the amount of the low pressure in a given time interval and the compliance C of the fluid system B including the dialysate chamber. A lack of integrity of the dialyser is then concluded on the basis of the determined leakage rate LR.

Extracorporeal blood treatment device and method for monitoring the integrity of a dialyzer of an extracorporeal blood treatment device

The present invention relates to a method for removing a first fluid from a blood filter for the blood treatment of a patient and/or for removing blood from the blood filter after completing the blood treatment session. It further relates to a medical treatment apparatus having a control device with which a method for removing a first fluid from a blood filter is executable, a digital storage medium, and a computer program product.

Method for removing fluid from a blood filter after completing a blood treatment session by means of flow increase and treatment device for carrying out said method

The present invention relates to a method for removing fluid from a blood filter () for the blood treatment of a patient and/or for removing blood from the flood filter () after completing the blood treatment session. It further relates to a control and/or regulating device (), a medical treatment apparatus having a control and/or regulating device () with which the method according to the present invention is executable, a digital storage medium, a computer program product as well as a computer program.

Growing community of inventors

Rüsselsheim, Germany

Sören Gronau