ALEXANDRIA, Va., July 30 -- United States Patent no. 12,369,929, issued on July 29, was assigned to Conmed Corp. (Largo, Fla.).

"Retrograde drilling device" was invented by Andrew Muser (St. Pete Beach, Fla.) and Andrew Kam (Odessa, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drill assembly for creating a reverse counterbore bone tunnel while increasing bone preservation. The drill assembly including a housing having an actuation mechanism and a cannulated shaft connected to the actuation mechanism. The drill assembly also includes a rigid rod extending through the cannulated shaft. Engaging the actuation mechanism moves the cannulated shaft along the rigid rod. The drill assembly additionally incl...