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:
Sep. 16, 2014
Filed:
Aug. 23, 2008
Applicants:
Richard K. Wampler, Loomis, CA (US);
David M. Lancisi, Folsom, CA (US);
Inventors:
Richard K. Wampler, Loomis, CA (US);
David M. Lancisi, Folsom, CA (US);
Assignee:
Thoratec Corporation, Pleasanton, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M 1/10 (2006.01); F04D 29/048 (2006.01); F04D 29/047 (2006.01); F04D 13/06 (2006.01); F16C 32/04 (2006.01); F04D 29/041 (2006.01);
U.S. Cl.
CPC ...
F04D 29/0413 (2013.01); F04D 29/048 (2013.01); Y10S 415/90 (2013.01); F04D 29/047 (2013.01); A61M 1/1036 (2014.02); F16C 2316/18 (2013.01); F04D 13/0666 (2013.01); A61M 1/101 (2013.01); A61M 1/1015 (2014.02); F16C 32/044 (2013.01); A61M 1/1017 (2014.02); A61M 1/1031 (2014.02);
Abstract
Various 'contactless' bearing mechanisms including hydrodynamic, hydrostatic, and magnetic bearings are provided for a rotary pump as alternatives to mechanical contact bearings. These design features may be combined. In one embodiment, the pump apparatus includes a rotor having a bore, a ring-shaped upper rotor bearing magnet, and a ring-shaped lower rotor bearing magnet. The bearing magnets are concentric with the bore. The lack of mechanical contact bearings enables longer life pump operation and less damage to working fluids such as blood.