An electromagnetic actuator for use with a surgical instrument. The electromagnetic actuator including: a stator arranged outside a tube； and a rotor mounted in the tube such that the rotor can move in the tube in a longitudinal axial direction of the tube； the rotor includes one or more of a paramagnetic and ferromagnetic material and is movable in the longitudinal axial direction by application of an electromagnetic field； the stator includes: a distal permanent magnet and a proximal permanent magnet, the distal permanent magnet and the proximal permanent magnet being oppositely polarized in the longitudinal axial direction； and at least one electric coil for generating the electromagnetic field； wherein the distal permanent magnet and the proximal permanent magnet are arranged on an outer side of the coil facing away from the tube.
