ALEXANDRIA, Va., July 16 -- United States Patent no. 12,357,191, issued on July 15, was assigned to Medtronic Navigation Inc. (Lafayette, Colo.).

"Modular coil assembly" was invented by Andrew Wald (Denver), Brad Jacobsen (Erie, Colo.), Danail G. Danailov (Westminster, Colo.) and Steven L. Hartmann (Superior, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "In various specific embodiments, a localizer can include a plurality of coil groups, where each coil group includes three coils that are formed around a single center. Each of the three coils can be formed around separate jigs and the jigs can be interconnected to form the coil group. The jigs need not be annular, but may be formed in any appropriate ...