Filter device

US6641731B1 · kind B1 · utility

Assignee

• Fresenius Medical Care Deutschland GmbH · DE

Inventors

• Klaus Heilmann · Sankt Wendel, DE
• Gerhard Breith · Sankt Wendel, DE
• Igor Raiko · Bad Homburg vor der Höhe, DE
• Roland Sander · Sankt Wendel, DE
• Steffen Fritzsche · Tholey, DE

Key dates

• Filing date: Dec 15, 1999
• Grant date: Nov 4, 2003
• Expiry date: Dec 15, 2019

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2313/21
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A filter device for mass exchange between two media separated by a membrane is disclosed. The device provides for low-stress transfer of blood flow from the connection area of the filter device to the fibers of a hollow fiber bundle. Relatively uniform utilization of the fibers is provided by a membrane in the form of a hollow fiber bundle whose fiber cavities form a first flow space. At least one inflow or outflow chamber is connected to the first flow space for supplying a medium to the hollow fiber bundle or removing a medium from the hollow fiber bundle. The inflow or outflow chamber is adjacent to an essentially circular or semicircular channel which is designed to be open in the direction of the ends of the hollow fibers and is connected to an inlet or outlet of the filter device. The channel is arranged approximately centrally with the hollow fiber bundle.