Marc Lessmann;Kay Hameyer;Ulrich Steinseifer;Paul Barteld Kwant;Thomas Finocchiaro;Thomas Schmitz-Rode;Thomas Butschen
发明人:
Thomas Finocchiaro,Thomas Butschen,Marc Lessmann,Kay Hameyer,Thomas Schmitz-Rode,Ulrich Steinseifer,Paul Barteld Kwant
申请号：
US12670708
公开号：
US08574291B2
申请日:
2008.08.18
申请国别(地区):
US
年份:
2013
代理人:
摘要：
The invention relates to an electrical linear drive, in particular for a pump system of an artificial heart, with a movable part and a stationary part, wherein the stationary part is formed by a permanent magnet arrangement and the movable part is formed by a coil arrangement, or vice versa, and wherein the coil arrangement and the permanent magnet arrangement can be moved to and fro relative to each other in an axial direction by means of current passed through the coil arrangement. The invention further relates to an electrical linear drive of this kind in which the permanent magnet arrangement is designed as a stack of frame-shaped, in particular ring-shaped magnets, which are magnetized alternately radially and axially in the axial direction, such that the magnetic field is strengthened on one side of the frame.
