The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2024
Filed:
Jan. 10, 2018
Fresenius Medical Care Deutschland Gmbh, Bad Homburg, DE;
Jurgen Hacker, Neu-Anspach, DE;
Soren Gronau, Russelsheim, DE;
Fresenius Medical Care Deutschland GmbH, Bad Homburg, DE;
Abstract
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.