Navigation system and navigation method having an annotation function

A surgical navigation system having an annotation function for inputting medical annotations or recordings that are position-related, and/or for outputting medical annotations during a surgical procedure on a patient, the surgical navigation system comprising:

• a display device for a visual output of the medical annotations;
• at least one robot as a positioning system, the at least one robot comprising a robot arm movably connected to a robot base and a robot head arranged at an end of the robot arm,
• a stereoscopic recording system arranged on or in the robot head, the stereoscopic recording system comprising at least two recording units spaced apart from each other in order to perform a 3D recording of a structure or surface relative to the stereoscopic recording system and to provide the 3D recording together with recording parameters in a computer-readable form;
• a tracking system adapted to detect and track a pose of the stereoscopic recording system and to provide the pose of the stereoscopic recording system in a computer-readable form;
• an annotation system comprising a storage unit in which an annotation database with a global coordinate system for annotation objects is stored;
• and
• a control unit adapted to process the 3D recording together with the recording parameters and the pose of the stereoscopic recording system and, based on the recording parameters and the pose of the stereoscopic recording system, to determine a pose of the 3D recording in the global coordinate system and to output at least one annotation object of the annotation database in the 3D recording at least in a correct position via the display device in a superimposed display and to improve navigation.

A surgical navigation method having an annotation function for inputting medical annotations and recordings that are position-related and for outputting the medical annotations during a surgical procedure on a patient, the surgical navigation method comprising the steps of:

• recording a 3D recording by a stereoscopic recording system arranged on or in a robot head, comprising at least two recording units spaced apart from each other, and providing a control unit with the 3D recording together with recording parameters;
• detecting and tracking a pose of the stereoscopic recording system by a tracking system and providing the control unit with the pose;
• when detecting an annotation instruction, determining a pose of the 3D recording from the pose of the stereoscopic recording system and the recording parameters;
• storing an annotation object with at least one section of the 3D recording and the recording parameters in an annotation database of an annotation system with a global coordinate system;
• and
• outputting a superimposed display while integrating the annotation object in a correct position via a display device.