(19)
(11) EP 1 818 068 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A2)

(48) Corrigendum issued on:
23.06.2010 Bulletin 2010/25

(43) Date of publication:
15.08.2007 Bulletin 2007/33

(21) Application number: 06124155.0

(22) Date of filing: 24.07.2000
(51) International Patent Classification (IPC): 
A61M 1/10(2006.01)
F04D 15/00(2006.01)
 F04D 13/02(2006.01)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
BA HR RS

(30) Priority: 23.07.1999 JP 20987999
07.07.2000 JP 2000206041

(62) Application number of the earlier application in accordance with Art. 76 EPC:
00402119.2 / 1070510

(71) Applicant: TERUMO KABUSHIKI KAISHA
Tokyo 151-0072 (JP)

(72) Inventors:
  • Maekawa, Jun Terumo Kabushiki Kaisha
    Tokyo 151-0072 (JP)
  • Ozaki, Takayoshi Terumo Kabushiki Kaisha
    Tokyo 151-0072 (JP)

(74) Representative: Joly, Jean-Jacques et al
Cabinet Beau de Loménie 158, rue de l'Université
75340 Paris cedex 07
75340 Paris cedex 07 (FR)

 
Remarks:
This application was filed on 15 - 11- 2006 as a divisional application to the application mentioned under INID code 62.
 


(54) Centrifugal fluid pump assembly


(57) A centrifugal fluid pump assembly (200) comprises a centrifugal fluid pump (205) and a control device (206). The centrifugal fluid pump (205) comprises a centrifugal fluid pump section including a housing and an impeller having a first magnetic material and a second magnetic material disposed thereof and accommodated for rotation in the housing and without contacting the housing, an impeller rotational torque generating section including a rotor having a magnet for attracting the first magnetic material and a motor for rotating the rotor, and an impeller position control section having an electromagnet for attracting the second magnetic material. The control device (206) includes a monitoring function of monitoring electric current flowing through the electromagnet; a monitoring function of monitoring motor-driving current; a monitoring function of monitoring the number of rotations of the motor; and a function of determining whether or not the impeller has a power swing by utilizing a current value monitored by the electric current monitoring function, a value of the motor-driving current monitored by the motor-driving current monitoring function, and the number of rotations of the motor monitored by the monitoring function of monitoring the number of rotations thereof.