The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2006
Filed:
Sep. 24, 2004
Don B. Olsen, Salt Lake City, UT (US);
Paul E. Allaire, Charlottesville, VA (US);
Houston G. Wood, Crozet, VA (US);
Ronald Kipp, Willowstreet, PA (US);
Wei Jiang, Charlottesville, VA (US);
Zongli Lin, Charlottesville, VA (US);
Guoxin LI, Charlottesville, VA (US);
Don B. Olsen, Salt Lake City, UT (US);
Paul E. Allaire, Charlottesville, VA (US);
Houston G. Wood, Crozet, VA (US);
Ronald Kipp, Willowstreet, PA (US);
Wei Jiang, Charlottesville, VA (US);
Zongli Lin, Charlottesville, VA (US);
Guoxin Li, Charlottesville, VA (US);
Medforte Research Foundation, Salt Lake City, UT (US);
Abstract
A blood pump has an impeller rotatably disposed and magnetically suspended within a cavity of a stator by a plurality of magnetic bearings including an axial bearing to support the impeller axially in the cavity. The axial bearing includes adjacent impeller magnets and adjacent stator magnets with axially aligned polarities and reverse polarities with respect to adjacent magnets. A motor includes impeller magnets on the impeller and coils and poles associated with the stator. Radial permanent magnet and electromagnetic bearings are also included. The magnetic bearings and the motor have stator magnets or coils and poles disposed radially across the fluid passage from corresponding impeller magnets to define an annular gap positioned radially between the impeller and the stator, and positioned radially between all of the plurality of magnetic bearings, creating a straight through blood path without secondary flow paths.