Withdrawal spike

US6743214B2 · kind B2 · utility

Assignee

• B. Braun Melsungen AG · DE

Inventors

• Norbert Heil · Fritzlar, DE
• Bernd Siemon · Homberg (Efze), DE
• Klaus Siemon · Münster, DE

Key dates

• Filing date: Sep 26, 2001
• Grant date: Jun 1, 2004
• Expiry date: Mar 16, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2039/266
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The withdrawal spike comprises a piercing thorn (10) and a housing (12) having filter chambers for air and fluid. In a connecting piece (23) for connection of an external device a self-closing valve (31) is arranged. Said valve (31) is adapted to prevent fluid from unintentionally flowing out of the withdrawal spike.