ALEXANDRIA, Va., March 26 -- United States Patent no. 12,256,954, issued on March 25, was assigned to Stryker Corp. (Portage, Mich.).

"System and method for controlling an ultrasonic tool" was invented by Adam Darwin Downey (Kalamazoo, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods of controlling an ultrasonic surgical tool with a console are provided. A first drive signal is applied to the ultrasonic surgical tool. A characteristic of a harmonic signal resulting from application of the first drive signal to the ultrasonic surgical tool is acquired. A cancellation signal is generated based on the characteristic of the harmonic signal. The first drive signal and the cancellation sign...