ELECTROMAGNETIC ACTUATOR FOR A SURGICAL INSTRUMENT AND METHOD FOR SETTING A STROKE DISTANCE

摘要

An electromagnetic actuator for a medical instrument including: a stator; and a movable element, at least partly composed of a paramagnetic and/or a ferromagnetic material, and which can be reversibly moved from a first to a second position by the application of a switchable magnetic field, wherein the stator and the movable element have annular distal and proximal pole shoes corresponding to each other, wherein the distal pole shoes and/or the proximal pole shoes of the stator and the movable element are aligned with each other in an overlapping manner in the first and/or the second position, and the distal pole shoes and/or the proximal pole shoes of the stator and the movable element have a structure in the circumferential direction on the surfaces of pole shoes facing each other, with the structures corresponding to each other.

主权项

1. An electromagnetic actuator for a medical instrument, wherein the actuator comprises:
a stator; and a movable element, which is at least partly composed of one or both of a paramagnetic and a ferromagnetic material, and which can be reversibly moved from a first position to a second position by the application of a switchable magnetic field, wherein the stator and the movable element have annular distal and proximal pole shoes that correspond to each other, wherein one or both of the distal pole shoes and the proximal pole shoes of the stator and the movable element are aligned with each other in an overlapping manner in one or both of the first position and the second position, and one or both of the distal pole shoes and the proximal pole shoes of both the stator and the movable element have a structure in the circumferential direction on the surfaces of pole shoes facing each other, with the structures corresponding to each other.