Abstract: Surgical device having a shaft with a distal end including a surgical instrument, and a proximal end including an actuation device; wherein the surgical instrument is mounted on sliders longitudinally movable in opposite directions relative to each other in the shaft by operation of the actuation device, the sliders provided adjacent to each other within the shaft; wherein in a first mounted position the sliders are coupled with the actuation device and are secured against rotation within the shaft to prevent releasing of the coupling between the sliders and the actuation device, and in a second dismountable position the sliders are concurrently slidable at least partly out of the shaft to a point at which rotation of the remainder of the sliders within the shaft is enabled, and the coupling between the sliders and the actuation device is releasable.

Abstract: A surgical device with a shaft having a distal end to which a surgical instrument is mountable and a proximal end equipped for handling the instrument, wherein the shaft is hollow and the surgical instrument is mountable on inserts that are longitudinally movable in the shaft parallel to the longitudinal axis and that are diametrically opposed to each other. The shaft comprises outer and inner tubes rotatable in opposite directions with respect to the longitudinal axis, and the inserts are coupled to the outer and inner tubes to convert rotational movement of the tubes into longitudinal movement of the inserts.

Abstract: Surgical device, in particular for minimally invasive surgery, having a shaft with a distal end equipped with a surgical instrument, for instance a grasper, and a proximal end equipped with an actuation device for the surgical instrument, which actuation device can be coupled with a handgrip and/or mechanical actuation means, and wherein the surgical instrument is mounted on sliders that are longitudinally movable in opposite directions with respect to each other in the said shaft by operation of the actuation device for actuating the surgical instrument, which sliders are provided adjacent to each other within said shaft, and wherein said sliders comprise a first mounted position and a second dismountable position, wherein in the first mounted position the sliders are coupled through a bayonet coupling with the actuation device and are secured while being in this first mounted position, against rotation within the said shaft to prevent releasing of the bayonet coupling between the sliders and the actuation d

Abstract: A surgical device with a shaft having a distal end to which a surgical instrument is mountable and a proximal end equipped for handling the instrument, wherein the shaft is hollow and the surgical instrument is mountable on inserts that are longitudinally movable in the shaft parallel to the longitudinal axis and that are diametrically opposed to each other. The shaft comprises outer and inner tubes rotatable in opposite directions with respect to the longitudinal axis, and the inserts are coupled to the outer and inner tubes to convert rotational movement of the tubes into longitudinal movement of the inserts.