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Title:
CENTRIFUGAL BLOOD PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/118325
Kind Code:
A1
Abstract:
A centrifugal blood pump device (1) is provided with a housing (20), a centrifugal pump section (2) which has an impeller (21) rotated within the housing (20) and sending blood by a centrifugal force generated by the rotation of the impeller, an impeller's rotational torque generation section (3) which attracts magnetic bodies (25) of the impeller and rotates the impeller (21), and dynamic pressure grooves which are provided in the inner surface of the housing (20) which is located on the impeller's rotational torque generation section (3) side. The side walls (52) of each of the dynamic pressure grooves are formed as sloped side walls (52) sloped obliquely in such a manner that the dynamic pressure groove expands from the bottom surface (53) thereof toward the opening surface thereof.

Inventors:
OKAWA Atsushi (1500 Inokuchi, Nakai-machi, Ashigarakami-gu, Kanagawa 51, 〒2590151, JP)
大川 厚司 (〒51 神奈川県足柄上郡中井町井ノ口1500番地 テルモ株式会社内 Kanagawa, 〒2590151, JP)
Application Number:
JP2011/054134
Publication Date:
September 29, 2011
Filing Date:
February 24, 2011
Export Citation:
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Assignee:
TERUMO KABUSHIKI KAISHA (44-1, Hatagaya 2-chome Shibuya-k, Tokyo 72, 〒1510072, JP)
テルモ株式会社 (〒72 東京都渋谷区幡ヶ谷二丁目44番1号 Tokyo, 〒1510072, JP)
OKAWA Atsushi (1500 Inokuchi, Nakai-machi, Ashigarakami-gu, Kanagawa 51, 〒2590151, JP)
International Classes:
A61M1/10; F04D13/02
Foreign References:
JP2005270345A2005-10-06
JPH07509156A1995-10-12
JPH07014220U
JP2005270415A2005-10-06
JPH0491396A1992-03-24
US7748964B22010-07-06
JP2005270345A2005-10-06
US7470246B22008-12-30
JP2004209240A2004-07-29
US7470246B22008-12-30
Attorney, Agent or Firm:
MUKAIYAMA Shoichi (Room No. 502, Marunouchi Office Forum 1-30, Marunouchi 2-chome, Naka-ku, Nagoya-sh, Aichi 02, 〒4600002, JP)
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Claims: