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Title:
CENTRIFUGAL PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/067682
Kind Code:
A1
Abstract:
A centrifugal blood pump device comprises an impeller (10) provided in a blood chamber (7), a permanent magnet (15) provided to one surface of the impeller (10), a permanent magnet (16) provided to the inner wall of the blood chamber (7), permanent magnets (17) provided to the other surface of the impeller (10), and magnetic bodies (18) and coils (20) provided in a motor chamber (8) and rotationally driving the impeller (10) with a partition wall (6) therebetween.  Dynamic pressure grooves (21, 22) are respectively formed in the partition wall (6) and in the inner wall of the blood chamber (7), and the partition wall (6) and the inner wall face the impeller (10).  The configuration allows the impeller (10) to be smoothly rotationally activated by control of a coil current.

Inventors:
OZAKI, Takayoshi (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
尾崎 孝美 (〒10 静岡県磐田市東貝塚1578番地 NTN株式会社内 Shizuoka, 〒4388510, JP)
YAMADA, Hiroyuki (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
山田 裕之 (〒10 静岡県磐田市東貝塚1578番地 NTN株式会社内 Shizuoka, 〒4388510, JP)
Application Number:
JP2009/069104
Publication Date:
June 17, 2010
Filing Date:
November 10, 2009
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
NTN株式会社 (〒03 大阪府大阪市西区京町堀1丁目3番17号 Osaka, 〒5500003, JP)
TERUMO KABUSHIKI KAISHA (44-1, Hatagaya 2-chome Shibuya-k, Tokyo 72, 〒1510072, JP)
テルモ株式会社 (〒72 東京都渋谷区幡ケ谷2丁目44番1号 Tokyo, 〒1510072, JP)
OZAKI, Takayoshi (1578 Higashikaizuka, Iwata-sh, Shizuoka 10, 〒4388510, JP)
尾崎 孝美 (〒10 静岡県磐田市東貝塚1578番地 NTN株式会社内 Shizuoka, 〒4388510, JP)
International Classes:
F04D13/06; A61M1/10; F04D13/02; F16C17/04; F16C32/04; F16C33/04; H02K7/08; H02K21/24
Foreign References:
JP2006167173A2006-06-29
JP2001309628A2001-11-02
JPH0521197U1993-03-19
JP2007247489A2007-09-27
JP2008132131A2008-06-12
JP2004209240A2004-07-29
JP2006167173A2006-06-29
JPH0491396A1992-03-24
JPH0653790U1994-07-22
Other References:
See also references of EP 2372160A4
Attorney, Agent or Firm:
FUKAMI, Hisao et al. (Fukami Patent Office, Nakanoshima Central Tower 22nd Floor, 2-7, Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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