ALEXANDRIA, Va., June 17 -- United States Patent no. 12,310,569, issued on May 27, was assigned to THOMPSON SURGICAL INSTRUMENTS INC. (Traverse City, Mich.).

"Surgical retractor having clamping mechanism" was invented by Dan Farley (Traverse City, Mich.), Josh Delickta (Elk Rapids, Mich.), Christopher T. Martin (Empire, Mich.) and Travis Witulski (Traverse City, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A clamp for a surgical retractor system. The clamp has a tapered conically shaped washer against and through which clamping force is applied to place the clamp in a clamped position. The clamping force is applied by a cam head connected to a central shaft. A locking pin connects the cam head to the...