Title:
血管内血液ポンプ
Document Type and Number:
Japanese Patent JP4279494
Kind Code:
B2
Abstract:
An intravascular blood pump designed to be advanced through the blood vessel system of the patient, comprises a housing ( 15 ) accommodating an electric motor ( 12 ), the proximal end of the housing ( 15 ) being connected to a catheter ( 23 ) and the distal end thereof carrying a pump ( 11 ). The electric motor ( 12 ) includes a stator winding ( 17 ) forming a load-bearing component of the housing ( 15 ). The stator winding ( 17 ) is embedded in a matrix made of synthetic resin. The housing ( 15 ) is of an ironless design without any magnetic reflux device. The motor is operated with a rotational speed of about 50,000 upm. The magnetic stray field generated with such high frequencies does not disturb the cardiac rhythm of the patient. The motor can be given a compact size and thus has a high mechanical output power.
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Inventors:
Cies, Torsten
Application Number:
JP2001541547A
Publication Date:
June 17, 2009
Filing Date:
November 03, 2000
Export Citation:
Assignee:
Impeller Cardio Technique Akchen Gesell Shaft
International Classes:
A61M60/13; A61M60/135; A61M60/216; A61M60/414; A61M60/825; A61M60/857; H02K3/47; H02K5/08; H02K5/124; H02K7/08; H02K7/14
Domestic Patent References:
| JP8504621A |
Foreign References:
| WO1998044619A1 | ||||
| EP0764448B1 | ||||
| US5438997 | ||||
| US5919162 | ||||
| WO1997037696A1 | ||||
| US5851174 | ||||
| WO1998014225A1 | ||||
| US5290227 | ||||
| US5460889 |
Attorney, Agent or Firm:
Toru Sakamoto
Takuji Harada
Takuji Harada