Title:
CENTRIFUGAL BLOOD PUMP
Document Type and Number:
Japanese Patent JP2017164503
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a centrifugal blood pump that has low weight and can provide a high torque to an impeller.SOLUTION: The centrifugal blood pump without a mechanical bearing comprises: a pump casing (1); and an impeller arranged in the pump casing rotatably about the central axis and freely movable axially and radially within a limited clearance. The impeller has permanent magnets or permanently magnetized magnetic regions (N/S) which cooperate with an electromagnetic drive to set the impeller rotating. A circular wall (12) or circularly arranged wall sections are provided within the pump casing, their inner surfaces defining a radial clearance together with the outer circumference of the impeller to form a hydrodynamic radial bearing for the impeller.SELECTED DRAWING: Figure 7
Inventors:
THORSTEN SIEB
GERD SPANIER
GERD SPANIER
Application Number:
JP2017061178A
Publication Date:
September 21, 2017
Filing Date:
March 27, 2017
Export Citation:
Assignee:
ABIOMED EUROPE GMBH
International Classes:
A61M1/10; F04D7/02; F04D13/06; F04D29/047
Domestic Patent References:
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| JP2005287598A | 2005-10-20 | |||
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Foreign References:
| US20110238172A1 | 2011-09-29 | |||
| US20010002234A1 | 2001-05-31 |
Attorney, Agent or Firm:
Patent Corporation yki International Patent Office