ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,401, issued on Nov. 25, was assigned to Stryker Corp. (Portage, Mich.).
"Control of an ultrasonic handpiece" was invented by Adam D. Downey (Kalamazoo, Mich.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods for controlling vibrations of an ultrasonic handpiece generate an AC drive signal applied to a transducer of the ultrasonic handpiece to vibrate a tip of the ultrasonic handpiece. A property relating to a stiffness of tissue being contacted by the vibrating tip is determined based on a measured voltage and a measured current of the AC drive signal. A target displacement for the tip is determined based on the tissue property, and...