Method of filling a tube system with a rinsing liquid and a tube system for use with this method

US6770049B2 · kind B2 · utility

Assignee

• Fresenius AG · DE

Inventors

• Claudia Ludt · Sankt Wendel, DE
• Bernd Mathieu · Spiesen, DE
• Hans-Jürgen Neumann · Sankt Wendel, DE
• Thomas Pusinelli · Schongau, DE
• Rudiger Witt · Strande, DE

Key dates

• Filing date: Sep 5, 2002
• Grant date: Aug 3, 2004
• Expiry date: Sep 5, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/7536
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A tube system comprising a blood inlet line with an arterial patient connection and a blood return line with a venous patient connection, where a rinsing liquid inlet line branches off from the blood inlet line downstream from the arterial patient connection, and a rinsing liquid return line branches off from the blood return line upstream from the venous patient connection is filled while maintaining sterility in that rinsing liquid is pumped from a rinsing liquid container through the rinsing liquid inlet line, the blood inlet line, the blood return line and the rinsing liquid return line, establishing a liquid connection between the rinsing liquid inlet line and return line. The venous patient connection is sealed liquid-tight with a venous safety cap, and the arterial patient connection is sealed liquid-tight with an arterial safety cap. The safety caps are removed from the patient connections for connecting the tube system to the patient.