ALEXANDRIA, Va., June 5 -- United States Patent no. 12,274,493, issued on April 15, was assigned to Smith & Nephew Inc. (Memphis, Tenn.), Smith & Nephew Orthopaedics AG (Zug, Switzerland) and Smith & Nephew Asia Pacific Pte Ltd. (Singapore).

"Combination electrosurgical and mechanical resection device" was invented by Sean Doll (Cedar Park, Texas), Bob Lathrop (Lawrence, Mass.) and Craig Di-Stefano (Andover, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A combination medical device for removing and treating tissue in a patient is disclosed. The device includes a reusable handle and a blade selectively connectable to the handle. The blade includes an outer sleeve having a lumen with an inner shaft disp...