Device for orienting a medical object (MO) in respect of an object under examination , comprising an orientation element (AE), a guide element (FE), an ancillary element (HE) and a light guiding device (LFE), wherein the orientation element (AE) is movably mounted so as to be forcibly guided by the guide element (FE) about a centre of rotation (RZ), said centre of rotation (RZ) being repositionable (RPOS-FE) by repositioning the guide element (FE), wherein the orientation element (AE) is designed for the longitudinal guidance of the medical object (MO) along a guide axis (FA) specified by the orientation element (AE), wherein the ancillary element (HE) has an identification marker (EM), wherein the ancillary element (HE) can be arranged in a defined arrangement in respect of the orientation element (AE), such that the identification marker (EM) is arranged in the centre of rotation (RZ), wherein the light guiding device (LFE) is designed to emit (TR-LV) a predefined distribution of light (LV) which specifies a path, wherein the predefined distribution of light (LV) illuminates the identification marker (EM) when the centre of rotation (RZ) is arranged on the path at a distance from the object under examination , wherein the arrangement of orientation element (AE) and ancillary element (HE) can be moved about the centre of rotation (RZ) arranged on the path in an operating state of the device, such that the guide axis (FA) of the orientation element (AE) can be aligned in a defined positional relationship in respect of the path, wherein the predefined distribution of light (LV) illuminates the identification marker (EM) with a predefined light pattern (LM), if the guide axis (FA) of the orientation element (AE) is oriented in a defined positional relationship in respect of the path. comprising an orientation element (AE), a guide element (FE), an ancillary element (HE) and a light guiding device (LFE), wherein the orientation element (AE) is movably mounted so as to be forcibly guided by the guide element (FE) about a centre of rotation (RZ), said centre of rotation (RZ) being repositionable (RPOS-FE) by repositioning the guide element (FE), wherein the orientation element (AE) is designed for the longitudinal guidance of the medical object (MO) along a guide axis (FA) specified by the orientation element (AE), wherein the ancillary element (HE) has an identification marker (EM), wherein the ancillary element (HE) can be arranged in a defined arrangement in respect of the orientation element (AE), such that the identification marker (EM) is arranged in the centre of rotation (RZ), wherein the light guiding device (LFE) is designed to emit (TR-LV) a predefined distribution of light (LV) which specifies a path, wherein the predefined distribution of light (LV) illuminates the identification marker (EM) when the centre of rotation (RZ) is arranged on the path at a distance from the object under examination , wherein the arrangement of orientation element (AE) and ancillary element (HE) can be moved about the centre of rotation (RZ) arranged on the path in an operating state of the device, such that the guide axis (FA) of the orientation element (AE) can be aligned in a defined positional relationship in respect of the path, wherein the predefined distribution of light (LV) illuminates the identification marker (EM) with a predefined light pattern (LM), if the guide axis (FA) of the orientation element (AE) is oriented in a defined positional relationship in respect of the path. <EOS>