Marker unit for use in ar aided surgery

Patent application, 2023

Disclosed is a marker unit for use in augmented reality aided surgery, and in particular laparoscopic liver surgery, comprising a flat body with two main surfaces, one of the main surfaces being provided with a set of optically detectable markers and the opposite main surface being arranged to be connected to a bodily organ, and preferably provided with an adhesive. The marker unit further comprises a set of radiopaque markers, visible by a medical imaging system. Both the optically detectable markers and the radiopaque markers are provided in a geometrical pattern not having rotational symmetry, thereby allowing the rotational position of the marker unit to be determinable, and wherein the geometrical patterns of the optically detectable markers and the radiopaque markers have a fixed, predetermined correlation.