Method for determining a treatment parameter on a haemofiltration device, and haemofiltration device for applying the method

US6939471B2 · kind B2 · utility

Assignee

• Fresenius Medical Care Deutschland GmbH · DE

Inventors

• Malte Gross · Schweinfurt, DE
• Andreas Maierhofer · Schweinfurt, DE

Key dates

• Filing date: Mar 21, 2003
• Grant date: Sep 6, 2005
• Expiry date: Oct 5, 2023

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/52
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method for determining a treatment parameter on a haemofiltration device, as well as a haemofiltration device for applying the method, based on the recognition that a determination method known from haemodialysis can, with little modification, be transferred to haemofiltration. To this effect a physical-chemical characteristic of the substitution fluid and of the fluid which is removed from the haemofilter by way of an ultrafiltrate outlet pipe, is determined. Furthermore, this characteristic is acquired before, after or during a change of this characteristic in the substitution fluid, and is evaluated. As a result, the ion dialysance and thus the urea clearance of a haemofiltration device, which can also be operated as a haemodiafiltration device, can be determined.