ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,484,981, issued on Dec. 2, was assigned to Globus Medical Inc. (Audubon, Pa.).

"Active end effectors for surgical robots" was invented by Norbert Johnson (North Andover, Mass.), Neil R. Crawford (Chandler, Ariz.) and Steven Chang (Phoenix).

According to the abstract* released by the U.S. Patent & Trademark Office: "Active end-effectors for guiding an instrument during a robot-assisted surgery. The surgical robot system may include a robot having a robot base, a robot arm coupled to the robot base, and the active end-effector coupled to the robot arm. The active end-effector may have a slide mechanism, which may provide for a greater range of motion of a surgical instrument along a ver...