公开(公告)号：WO2015135814A3

公开(公告)日：2016-01-07

申请号：PCT/EP2015054539

申请日：2015-03-04

Applicant: WINTER & IBE OLYMPUS

Inventor： MARTIN WIETERS

IPC: H01F7/16 ,  A61B1/00 ,  G02B7/00 ,  G02B23/00 ,  H01F1/055 ,  H01F1/057 ,  H01F41/02 ,  H02K33/00

CPC classification number: H02K41/035 ,  A61B1/00096 ,  A61B1/00158 ,  A61B2034/731 ,  H01F1/083 ,  H01F7/1615 ,  H01F41/0266 ,  H01F2007/1669 ,  H02K33/16

Abstract: The invention relates to a bistable electromagnetic actuator (1), in particular for a surgical instrument, comprising a stator (10) arranged outside of a pipe (2), and a mover (30) supported in the pipe (2) in such a way that the mover can be longitudinally axially displaced, which mover at least partially comprises a paramagnetic and/or ferromagnetic material and can be reversibly displaced between a first position (6) and a second position (8) by applying an electromagnetic field, wherein the stator (10) comprises two, in particular oppositely axially poled, annular permanent magnets (12, 14), a coil (16) for producing the electromagnetic field, and a back-iron element (18) having two stator pole shoes (20, 22). The invention further relates to a surgical instrument. The actuator (1) according to the invention is characterized in that the annular permanent magnets (12, 14) comprise hard magnetic particles, which are embedded in a plastic matrix.

Abstract translation: 本发明涉及一种双稳态电磁致动器（1），尤其是用于手术器械，跑步者布置在包括一个管（2）的定子（10）的外侧和所述管（2）纵向地沿轴向可滑动地安装（30）至少部分地顺磁 具有和/或铁磁材料，并通过施加电磁场可逆的第一位置（6）之间是可移动到第二位置（8），其中，所述定子（10）两个，特别是相反的方向轴向极化，环形永久磁铁（12，14）， 用于产生电磁场的线圈（16），以及具有两个定子极片（20，22），以及手术器械中的复位元件（18）。 根据本发明（1）的致动器的特征在于，所述环形永久磁铁（12,14）包括硬磁颗粒，这些颗粒被嵌入在塑料基质。