ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,700,135, issued on Aug. 4, was assigned to MAKO Surgical Corp. (Weston, Fla.).

"System and method for image based registration and calibration" was invented by Jean Stawiaski (Kirchzarten, Germany), Fadi Ghanam (Schallstadt, Germany) and David Hofmann (Freiburg, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for defining a relationship between a surgical object and a tracker coupled to the surgical object. A first optical sensor senses light in an infrared spectrum or a near-infrared spectrum. A second optical sensor senses light in a visible light spectrum. Controller(s) acquire one or more first images of the tracker from th...