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. 13, 2001
Filed:
Jul. 19, 1999
Applicant:
Inventor:
Helge Brauer, Gochsheim, DE;
Assignee:
Fresenius Medical Care Deutschland GmbH, Bad Homburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 6/130 ;
U.S. Cl.
CPC ...
B01D 6/130 ;
Abstract
A method and a device for verifying the proper replacement of a used filter that is divided into two chambers by a membrane in a device for extracorporeal treatment of blood. The verification of whether the filter has been properly replaced with a new filter is performed by a pressure retaining test, which determines whether the membrane of the filter is permeable to gas. In the event the membrane is permeable to gas, it is concluded that the used filter has been replaced by a new filter.