Abstract: The invention relates to a device for detecting spatial position, which can be attached via a mounting device to a surgical instrument, which has a longitudinal axis, wherein the mounting device has a through opening, which is penetrated by the instrument, wherein the mounting device is mounted so as to be rotatable around the longitudinal axis of the instrument, and wherein the mounting device can be immobilized in an axial and a radial direction via two angular ball bearings.

Abstract: A surgical instrument for the introduction of an intervertebral prosthesis (10) including at least three components, namely, two prosthesis plates (14, 16) and a prosthesis core (12). The surgical instrument can include a U-shaped holder (30) at the distal end of a gripping element (20) into which the intervertebral prosthesis (10) with all the components can be detachably introduced whereby the individual components are aligned with respect to one another in a fixed manner.

Abstract: A surgical instrument for the introduction of an intervertebral prosthesis (10) including at least three components, namely, two prosthesis plates (14, 16) and a prosthesis core (12). The surgical instrument can include a U-shaped holder (30) at the distal end of a gripping element (20) into which the intervertebral prosthesis (10) with all the components can be detachably introduced, whereby the individual components are aligned with respect to one another in a fixed manner, wherein the two holder elements (50, 52) of the U-shaped holder (30) are connected via a parallel guidance, which can be opened as well as closed via an elbow or bell-crank lever (70).