ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,408,909, issued on Sept. 9, was assigned to XTANT MEDICAL HOLDINGS INC. (Belgrade, Mont.).

"Apparatus and method for enlarging an incision" was invented by Scott J. Perrow (Ishpeming, Mich.), Bruce Anthony Riceman (Leander, Texas) and Jacob Anton Colantonio (Marquette, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A retraction system and method are provided for retracting tissues surrounding a surgical site. In one aspect, a method including engaging slide connections between a guide dilator and a plurality of tissue engaging members and sequentially enlarging an incision using the guide dilator and the plurality of tissue engaging members. In a...