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Patent Searching and Data


Title:
IMPELLER
Document Type and Number:
Japanese Patent JP2010158532
Kind Code:
A
Abstract:

To eliminate the conventional inconvenience that a secondary blood flow around an impeller is pushed aside in the same direction as a main blood flow passing through the center of the impeller, a blood passage needs the supply of comparatively large energy, and an auxiliary blade set causes thrombus formation and/or hematolysis within a pump.

An axial flow rotary type blood pump includes an impeller 5 composed so as to be magnetically rotated by the interaction of a magnet arranged on the impeller or within it and a stator arranged on the housing or within it within a housing. The stator is arranged with offsetting in a shaft direction from the magnet and the impeller is provided with a main shaft, a backing ring, two or more estranged blades 4 which extend between this backing ring and the main shaft, and a fluid type bearing 3 on the backing ring 2 which exerts working at least in a shaft direction and in a radius direction about the rotation axis of the impeller. The fluid type bearing is provided with at least two fluid type bearings on the backing ring and a channel formed between these fluid type bearings.

COPYRIGHT: (C)2010,JPO&INPIT


Inventors:
TANSLEY GEOFFREY DOUGLAS
COOK MARTIN CHRISTOPHER
WOODARD JOHN CAMPBELL
Application Number:
JP2010029252A
Publication Date:
July 22, 2010
Filing Date:
February 12, 2010
Export Citation:
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Assignee:
VENTRACOR LTD
International Classes:
A61M1/10; A61M1/12; F04D7/04; F04D13/06; F16C17/10; H02K44/02
Domestic Patent References:
JP2002349482A2002-12-04
JP2002070780A2002-03-08
Foreign References:
US5370509A1994-12-06
US6527699B12003-03-04
Attorney, Agent or Firm:
村山 靖彦
志賀 正武
渡邊 隆
実広 信哉