Method and device for conveying fluids into the treatment unit of a medical treatment apparatus, in particular into the dialyzer of a dialysis apparatus

US9603987B2 · kind B2 · utility

Assignee

• Fresenius Medical Care Deutschland GmbH · DE

Inventors

• Matthias Brandl · Munich, DE
• Manfred Weis · Sankt Wendel, DE
• Volker Nier · Reichelsheim, DE
• Gerhard Mager · Bad Homburg vor der Höhe, DE
• Michael Herrenbauer · Neu-Anspach, DE

Key dates

• Filing date: Jun 14, 2011
• Grant date: Mar 28, 2017
• Expiry date: Dec 10, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/2574
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention relates to a device and method for conveying fluids into the treatment unit of a medical treatment apparatus. The device and method according to the present invention are based on the fact that the fluid with which the treatment unit is supplied, circulates in a fluid circuit including the treatment unit. To balance fresh and used fluid fed to the treatment unit or conveyed from the treatment unit, a balancing unit with a balancing chamber is used, which can be incorporated into the fluid circuit including the treatment unit. It is thus possible to supply the fluid circuit continuously with fresh fluid or to carry away used fluid continuously from the fluid circuit. The supply and discharge of fresh and used fluid can take place at a different flow rate from the flow rate at which the fluid circulates in the fluid circuit via the treatment unit.