ALEXANDRIA, Va., March 19 -- United States Patent no. 12,251,274, issued on March 18, was assigned to Stryker Corp. (Portage, Mich.).

"Systems and methods for targeted spectral illumination" was invented by Wojciech Timoszyk (Flower Mound, Texas), Sean Hastings (Flower Mound, Texas), Robert York (Lantana, Texas) and Leif Jacobi (Tuttlingen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A surgical light for illuminating a target with light that has a reduced contribution of a portion of the visible spectrum includes a first light source configured to emit light having a first spectrum; a second light source configured to emit light having a second spectrum that does not include the portion of the vis...