Tube arrangement and a method for its manufacture

US6832981B2 · kind B2 · utility

Assignee

• Fresenius HemoCare GmbH · DE

Inventors

• Friedrich Witthaus · Namborn, DE
• Wolfram Weber · Friedrichsthal, DE

Key dates

• Filing date: May 23, 2002
• Grant date: Dec 21, 2004
• Expiry date: Jul 6, 2022

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B04B2005/0492
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A multi-lumen tube arrangement for use in a centrifuge free of a sliding seal, the tube arrangement having at least two individual tubes which are rotated around one another around their longitudinal and/or their parallel axes. The rotation of the tubes takes place in this connection in opposite directions starting from a support position disposed approximately centrally in order to compensate the torques applied to the tube arrangement. A method for manufacturing such a tube arrangement is also decribed.