Title:
使い捨て磁気浮上式血液ポンプ
Document Type and Number:
Japanese Patent JP4496376
Kind Code:
B2
Abstract:
The present invention relates to a disposable centrifugal blood pump with magnetic coupling, and provides a centrifugal blood pump with magnetic coupling which is simple in structure of disposable parts, has a smaller number of permanent magnets and is low cost. Therefore, according to the present invention, a housing as the disposable part includes a cylindrical rotor being formed of magnetic material and having ring-shaped pole faces extending on one side and the other side of the outer peripheral surface thereof and having a plurality of pole faces projecting inward from the inner peripheral surface thereof on the one side and the other side and an impeller attached to the rotor, and a stator as a reusable part includes three or more electromagnets for electromagnetic coupling arranged around the housing at regular intervals for forming a magnetic coupling between the stator and the rotor, a torque transmission disk formed by sandwiching a ring-shaped permanent magnet magnetized in the direction of thickness between two upper and lower ring members formed of magnetic material and having a plurality of pole faces corresponding to the pole faces projecting from the inner peripheral surface of the rotor formed so as to project therefrom for generating a magnetic coupling between the stator and the rotor, a motor arranged apart from the housing for rotating the torque transmission disk, and a displacement gauge for measuring displacement of the rotor in the radial direction.
Inventors:
Tadahiko Shinshi
Akira Shimokawa
Junichi Asama
Motive force
Hijikata Wataru
Takaya Setsuo
Hideo Hoshi
Akira Shimokawa
Junichi Asama
Motive force
Hijikata Wataru
Takaya Setsuo
Hideo Hoshi
Application Number:
JP2007534380A
Publication Date:
July 07, 2010
Filing Date:
September 01, 2006
Export Citation:
Assignee:
National University Corporation Tokyo Institute of Technology
Tokyo Medical And Dental University, Medical Hospital
Tokyo Medical And Dental University, Medical Hospital
International Classes:
A61M1/10; F04D13/02; F04D29/048
Domestic Patent References:
| JPH03286775A | 1991-12-17 | |||
| JPH09206373A | 1997-08-12 | |||
| JP2000502420A | 2000-02-29 |
Attorney, Agent or Firm:
Furuya Fumio
Toshihide Mori
Toshihide Mori