SURGICAL REFERENCING UNIT, SURGICAL INSTRUMENT, AND SURGICAL NAVIGATION SYSTEM

摘要

The invention relates to a surgical referencing unit for a surgical navigation system, with which a position and/or orientation of the referencing unit in the room can be determined, wherein the referencing unit comprises a main body and at least one marker element arranged on the main body, wherein the position of the marker element in the room can be determined by the navigation system, wherein in order to improve the surgical referencing unit in such a way that the handling thereof is simplified and possible errors in the use thereof are avoided, it is proposed that the at least one marker element be movably supported on the main body, that the referencing unit comprise a first interface device, which is designed to be engaged with a second interface device provided on a surgical instrument or an implant in a connection position, and that the at least one first marker element can be brought into a predefined marker element position depending on the interacting first and second interface devices. The invention further relates to an improved surgical instrument and an improved surgical navigation system.