Pump for low flow rates

US6860993B2 · kind B2 · utility

Assignee

• Roche Diagnostics GMBH · DE

Inventors

• Carlo Effenhauser · Weinheim, DE
• Herbert Harttig · Neustadt, DE
• Peter Kraemer · Hanau, DE

Key dates

• Filing date: Jun 19, 2001
• Grant date: Mar 1, 2005
• Expiry date: Jun 18, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T436/2575
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The present invention concerns a pump for flow rates from about 1 to 1000 nl/min in which liquid transport takes place by evaporation of a transport liquid through a wettable membrane. The pumps according to the invention are particularly suitable for applications in the field of medical diagnostics such as microdialysis or ultrafiltration.