ALEXANDRIA, Va., April 21 -- United States Patent no. 12,605,525, issued on April 21, was assigned to Nextern Innovation LLC (Maple Grove, Minn.).

"Focusing catheter" was invented by Avnesh Thakor (Menlo Park, Calif.), John D. Foley (Libettyville, Ill.) and Ryan Douglas (Stillwater, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Apparatuses and associated methods relate to a coaxial stream delivery device having an inlet section and an outlet section in fluid communication via a plenum chamber. In an illustrative example, an inner radius of the plenum chamber may monotonically decrease distally along a longitudinal axis. The inlet section may include an inner tubular wall extending along the longitudin...