ALEXANDRIA, Va., June 5 -- United States Patent no. 12,274,521, issued on April 15, was assigned to Verb Surgical Inc. (Santa Clara, Calif.).

"Robotic arm having an extendable prismatic link" was invented by Roman Devengenzo (San Jose, Calif.) and Pablo Garcia Kilroy (Menlo Park, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Robotic arms and surgical robotic systems incorporating such arms are described. A robotic arm includes a roll joint connected to a prismatic link by a pitch joint and a tool drive connected to the prismatic link by another pitch joint. The prismatic link includes several prismatic sublinks that are connected by a prismatic joint. A surgical tool supported by the tool drive can i...