Head-Worn AR Navigation for Accurate Knee Registration

The patent combines the camera, display, and processing units into an integrated head-worn device that is worn by the surgeon. This merging eliminates the need for separate external cameras and displays, allowing the surgeon to view navigation information directly in their field of view without turning their head or dealing with line-of-sight obstruction from external equipment.

The patent transitions from two-dimensional external displays to three-dimensional spatial integration by placing the display within the surgeon's visual field. The head-worn device projects navigation images into the surgeon's field of view, creating a multi-dimensional integration of surgical and navigation perspectives that eliminates the need for head movements.

The patent replaces the mechanical stylus point cloud approach with a camera-based optical system. Instead of using a physical stylus to probe anatomical surfaces and build point clouds, the system uses cameras to capture images and automatically map anatomical surfaces, significantly reducing registration time while improving accuracy through visual feedback and automated image processing.

The patent creates visual copies or representations of anatomical surfaces through camera imaging and processes these images to generate accurate anatomical models. This copying approach through optical capture and image processing is faster and more accurate than mechanical probing, as it captures the entire surface geometry simultaneously rather than point-by-point.