ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,702,813, issued on Aug. 11, was assigned to REGENTS OF THE UNIVERSITY OF MICHIGAN (Ann Arbor, Mich.).

"X-bar stopcock device for pulmonary artery catheterization" was invented by Mark Miller (Ann Arbor, Mich.), Tracy Birchmeier (Ann Arbor, Mich.), Bree Susalla (Ann Arbor, Mich.), Yuru Chen (Ann Arbor, Mich.), Rayna Berris (Ann Arbor, Mich.), Cara Spencer (Ann Arbor, Mich.) and Caroline Schmiedeler (Ann Arbor, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A unified X-bar stopcock, including a bidirectional stopcock having a first port, second port, third port, and fourth port; and a three-way stopcock having a fifth port, sixth port, and seventh p...