Blood treatment device and disposable kit for a blood treatment device

US6645166B2 · kind B2 · utility

Assignee

• Fresenius Medical Care Deutschland GmbH · DE

Inventors

• Peter Scheunert · Friedrichsdorf, DE
• Martin Lauer · Sankt Wendel, DE
• Manfred Weis · Sankt Wendel, DE
• Josef Beden · Mainz, DE
• Martin Herklotz · Heusenstamm, DE
• Joachim Manke · Nordhausen, DE
• Uwe Hahmann · Bad Homburg vor der Höhe, DE

Key dates

• Filing date: Aug 27, 2001
• Grant date: Nov 11, 2003
• Expiry date: Aug 27, 2021

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/128
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A blood treatment device, in particular a dialysis machine, which permits both single-needle and dual-needle operation. The device has a blood treatment unit, in particular a dialyzer that has an inlet connected to a feed line and an outlet connected to a return line. The feed line has two parallel line branches with a positive displacement pump being connected into the first and second line branches. To produce a fluid connection between the outlet of the dialyzer and one of the two pumps, a connection line is provided. For dual-needle operation, the feed and return lines are connected to an arterial and a venous needle. For single-needle operation, the feed and return lines are brought together and connected to a common needle. The connection line permits single-needle operation without great changes to the structure of the blood treatment device.