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:
Jun. 30, 2015
Filed:
Jun. 28, 2011
Takayoshi Ozaki, Iwata, JP;
Hiroyuki Yamada, Iwata, JP;
Kenichi Suzuki, Iwata, JP;
Ken Sugiura, Iwata, JP;
Takayoshi Ozaki, Iwata, JP;
Hiroyuki Yamada, Iwata, JP;
Kenichi Suzuki, Iwata, JP;
Ken Sugiura, Iwata, JP;
Thoratec Corporation, Pleasanton, CA (US);
Abstract
This centrifugal blood pump apparatus includes an impeller provided in a blood chamber, a first permanent magnet provided in one surface of the impeller, and a second permanent magnet provided in an inner wall of the blood chamber, for attracting the first permanent magnet. The attractive force between the first permanent magnet and the second permanent magnet on the opening side of a sidewall of the blood chamber is set to be smaller than the attractive force between the first permanent magnet and the second permanent magnet on the opposite side of the opening. As a result, inclination of the impeller with respect to a dividing wall during pump operation can be prevented.