Blood filtering device

US10350516B2 · kind B2 · utility

Assignee

• MANN+HUMMEL GmbH · DE

Inventors

• Dagmar Winkler · Echterdingen, DE
• Heike Rupp · Kirchheim am Neckar, DE
• Steffen Schuetz · Bietigheim-Bissingen, DE
• Karlheinz Muenkel · Bretten, DE
• Joachim Stinzendoerfer · Speyer, DE

Key dates

• Filing date: Dec 28, 2015
• Grant date: Jul 16, 2019
• Expiry date: Feb 6, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/491
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A blood filtering device has a tubular housing with a tubular section and tubular housing volume. A filtration section with a filter medium separating a raw side from a clean side is arranged in the tubular housing. The filtration section is movable along the tubular section and movably sealed relative to the tubular housing. The filtration section separates the tubular housing volume into variable first and second tubular housing volumes. A first communication path extends between raw side and first tubular housing volume. A second communication path exits between raw side and second tubular housing volume. When moving the filtration section, blood in the first tubular housing volume flows through the first communication path to the raw side; blood plasma passes through the filter medium to the clean side; residual blood flows through the second communication path into the variable second tubular housing volume.