Laser-guidance robot for visually projecting a guide to a surgery plan, projection method, and laser-guidance robot system

A laser-guidance robot for visually projecting a guiding axis onto an intervention region of a patient, the laser-guidance robot comprising:

• a guidance robot with a robot arm movably articulated to a robot base and a robot head connected to the robot arm;
• a tracking system adapted to detect a position and/or an orientation of the robot head;
• a projection laser configured to emit laser radiation, the projection laser arranged so that a position and orientation of the projection laser is adjustable indirectly via the robot head;
• and
• a control unit adapted to determine a target position and target orientation of the projection laser in relation to the intervention region of the patient and to control the robot arm with the robot head and the projection laser in such a way that the projection laser is moved to the target position and target orientation and visually displays at least one guiding axis on the intervention region via projection of the laser radiation in the target orientation.

A projecting method for visually projecting a guiding axis onto an intervention region of a patient with a projection laser arranged on a robot head of a robot arm, the projecting method comprising the steps of:

• detecting a position and/or an orientation of the projection laser in space by a tracking system;
• calculating an intervention axis;
• calculating a target position and target orientation of the projection laser by a control unit;
• moving the robot head with the projection laser to the target position and target orientation by the robot arm;
• and
• projecting laser radiation in the target orientation by the projection laser, so that a guiding axis projected by the projection laser indicates the intervention axis.