ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,168, issued on April 21, was assigned to Stryker Corp. (Portage, Mich.).

"Surgical handpiece for determining breakthrough depth of a bore formed in bone" was invented by Steve Carusillo (Kalamazoo, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drill for driving a drill bit into a solid object such as bone. The drill includes a rotor with a bore that transmits rotational movement to the drill bit. The drill bit extends through the rotor bore. A probe extends forward from the drill to measure bore depth. The probe is moveably mounted to the drill so as to extend into the rotor bore. As the drill and drill bit advance forward the probe remain...