ALEXANDRIA, Va., March 12 -- United States Patent no. 12,245,757, issued on March 11.

"Lighted polyhedral retractor" was invented by Eric D. Whitman (Madison, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A surgical retractor includes a structure including a plurality of legs and a plurality of joints, each leg being connected to at least one second leg at a joint. The structure has a non-expanded state, and an expanded state in which the structure forms a three dimensional structure having an internal volume. The structure has first and second manipulator arms, each of the manipulator arms being connected to at least two joints of the structure. The manipulator arms may be manipulated by a hand of a u...