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:
Dec. 08, 1998
Filed:
Jul. 10, 1997
Applicant:
Inventor:
Bernd Nederlof, St. Wendel, DE;
Assignee:
Fresenius AG, Bad Homburg, DE;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
2103231 ; 210252 ; 210258 ; 21032165 ; 210409 ; 210418 ; 2104331 ; 210435 ; 210646 ;
Abstract
A hemo(dia)filtration apparatus (10) is described comprising a dialyzer (12) and two sterile filters (38) and (60). The first chambers (42) and (64) of both sterile filters (38) and (60) may be switched at least intermittently during flow through, thereby flushing out membranes (40) and (62) of both sterile filters (38) and (60) and effectively preventing an accumulation of germs and pyrogens. This prevents an increase in the transmembrane pressure (TMP), which reduces the likelihood of a rupture, thereby ensuring sterility of the dialyzer fluid and improving the operating safety of the hemodiafiltration apparatus (10).