ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,232,790, issued on Feb. 25, was assigned to Ivytech Design LLC (Dover, Del.).

"Adjustable angle orthopedic distractor, compressor, and distractor-compressor" was invented by Nicholas Szabo (Philadelphia), Trevor Chan (Philadelphia), Joshua Robert Vogel (Pembroke Pines, Fla.) and Shelby Meckstroth (New Orleans).

According to the abstract* released by the U.S. Patent & Trademark Office: "An orthopedic instrument, comprising a pair of pivotally-connected arms, extending beyond a pivot axis of a first pivot; a pair of feet mounted to ends of the pair of pivotally-connected arms; and a quadrilateral linkage configured to maintain parallelism between the pair of feet over a range of angles...