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, 2007
Filed:
Oct. 28, 2004
Wolfgang Kleinekofort, Kelkheim, DE;
Wolfgang Kleinekofort, Kelkheim, DE;
Fresenius Medical Care Deutschland GmbH, Bad Homburg, DE;
Abstract
A method and a device for determining the blood flow Qin a vascular access (F) during an extracorporeal blood treatment is described, where the blood enters the blood treatment unit () of the blood treatment machine through an arterial branch () of an extracorporeal circulation loop () which is in fluid connection with the vascular access at an arterial connection. The blood is returned through a venous branch () of the extracorporeal circulation, which is in fluid connection with the vascular access at a venous connection (). The blood flow in the vascular access is determined by measuring the pressure p, p, in the arterial and/or venous branch of the extracorporeal circulation when the vascular access is open and interrupted, while the extracorporeal blood flow Qis varied. Then the fistula flow Qis determined from the measured values for the arterial and/or venous pressure while the vascular access is open and interrupted.
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