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:
Mar. 28, 2000
Filed:
Feb. 27, 1998
Ralf Wamsiedler, Schonungen, DE;
Raimund Walter, Schwebheim, DE;
Fresenius Medical Care Deutschland GmbH, Bad Homburg, v.d.H., DE;
Abstract
A method and device for accurately determining the volume of and replacing ultrafiltrate in hemodiafiltration using an ultrafiltrate balance chamber that is subdivided by a movable partition into two balance chamber halves. The two balance-chamber halves being alternately filled, one with ultrafiltrate and the other with substituate, such that the volume of ultrafiltrate is balanced against the volume of substituate. The filling of one chamber with ultrafiltrate or substituate displaces an equal volume of substituate or ultrafiltrate from the other chamber half and diverts the displaced ultrafiltrate or substituate from the balance chamber. The filling volume of the ultrafiltrate balance chamber is used to determine the ultrafiltrate volume or the volume of substituate.