Title:
【発明の名称】埋込可能の遠心心臓補助ポンプのための半径方向駆動手段
Document Type and Number:
Japanese Patent JPH04506446
Kind Code:
A
Abstract:
A centrifugal pump for left ventricle assist includes a pump housing forming an impeller chamber with inlet and outlet passages and enclosing an impeller rotatable to move blood or other fluids through the impeller chamber, and a rotor chamber enclosing a rotor integral with the impeller and rotatable to drive the impeller. A stator is mounted outside of a rotor casing forming the rotor chamber, concentric with, radially outward of and approximately axially aligned with the rotor. The stator includes a stator frame with an annular back iron and twenty-four teeth equally spaced apart and projected radially inwardly of the back iron. Three wires, one for each of three motor phases, are wound about the back iron, each including four symmetrically arranged active segments toroidally wound about the back iron, corresponding to four poles in a permanent magnet fixed to the rotor. Successive coils are wound in opposite toroidal directions, corresponding to an alternating and opposite arrangement of the poles of the magnet.
Inventors:
Frank Dorman
Application Number:
JP51039990A
Publication Date:
November 05, 1992
Filing Date:
July 09, 1990
Export Citation:
Assignee:
Regents of the University of Minnesota
International Classes:
H02K1/12; A61M60/178; A61M60/232; A61M60/422; A61M60/531; A61M60/816; A61M60/818; A61M60/822; A61M60/824; A61M60/827; A61M60/829; F04D13/06; F04D29/10; H02K1/27; H02K3/12; H02K7/14; H02K21/14; H02K29/08; (IPC1-7): H02K1/12; H02K7/14; H02K21/14
Attorney, Agent or Firm:
Akira Asamura (3 outside)