Magnetically suspended miniature fluid pump and method of designing the same

US6447265B1 · kind B1 · utility

Assignees

• UNIVERSITY OF PITTSBURGH · US
• The United States of America as represented by the United States National Aeronautics and Space Administration · US

Inventors

• James F. Antaki · Pittsburgh, US
• Bradley E. Paden · Lompoc, US
• Gregory Burgreen · Pittsburgh, US
• Nelson J. Groom · White Marsh, US

Key dates

• Filing date: Sep 20, 1999
• Grant date: Sep 10, 2002
• Expiry date: Sep 20, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S415/90
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A rotary pump for pumping fluids through a patient having a housing with an internal region, a stator member and an impeller positioned within the housing and having impeller blades, wherein the impeller is magnetically suspended and rotated, and wherein the geometric configuration of the rotary pump is sized and proportioned to minimize stagnant and traumatic fluid flow within the rotary pump. The plurality of magnetic impeller blades are preferably rare earth, high-energy-density magnets selected from the group consisting of samarium cobalt and neodymium-iron-boron alloy.