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. 23, 2003
Filed:
Aug. 28, 2001
Thorsten Siess, Wuerselen, DE;
Impella CardioSystems AG, Aschen, DE;
Abstract
The blood pump comprises a pump casing ( ) in which an impeller ( ) is installed without any bearing. Said impeller ( ) is rotated via a magnetic coupling ( ) by an external magnetic driving means ( ). The impeller is radially centered via the magnetic coupling ( ). The lower side ( ) of the blades ( ) of the impeller is configured as supporting surface ( ) sloping towards the trailing end. In this way a hydrodynamical supporting effect is attained during rotation such that the impeller ( ) raises from the bottom surface ( ) of the pump casing ( ). Since no bearings and sealings are provided on the pump casing the danger of thrombosis and the danger of penetration of foreign bodies in the form of abrasive particles into the blood is reduced.