Device and method for separation

US6929750B2 · kind B2 · utility

Assignee

• ERYSAVE AB · SE

Inventors

• Thomas Laurell · Lund, SE
• Mats Allers · Lund, SE
• Henrik Jönsson · Stockholm, SE
• Hans Persson · Lund, SE
• Andreas Nilsson · Göteborg, SE
• Filip Tobias Petersson · Lund, SE

Key dates

• Filing date: Mar 11, 2002
• Grant date: Aug 16, 2005
• Expiry date: Jun 11, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M1/3678
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention provides a device and a method for separating particles from fluids using ultrasound, laminar flow, and stationary wave effects comprising a micro-technology channel system with an integrated branching point or branching fork, and a single ultrasound source. One of the characteristics of the invention is that the single ultrasound source, which generates the standing waves, excites the complete structure including the channel system. No special reflectors or the like are needed. Extremely thin dividers can separate the flow, thereby enhancing the effectiveness of the device. The device could be manufactured in silicon and the ultrasound energy could preferably be delivered by a piezoelectric element.