ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,376,912, issued on Aug. 5, was assigned to Think Surgical Inc. (Fremont, Calif.).
"Methods for locating and tracking a tool axis" was invented by Daniel Patrick Bonny (Fremont, Calif.), Joel Zuhars (Fremont, Calif.) and Nathan A. Netravali (Fremont, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system for determining an orientation of a tool axis with respect to a coordinate frame of a robot is described herein. The robot includes a tool holder and a plurality of fiducial markers for defining a first coordinate frame of the robot. A calibration device is provided having a second fiducial marker for a tracking system to track positions and confi...