ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,200, issued on Dec. 30, was assigned to California Institute of Technology (Pasadena, Calif.).
"Implantable micro-sensor to quantify dissolved inert gas" was invented by Emil P. Kartalov (Monterey, Calif.) and Axel Scherer (Pasadena, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and devices including implantable micro-sensors used to detect tissue-dissolved inert gas and to detect microbubble formation to avoid Caisson disease are described. The disclosed methods and devices are based on measuring the refractive index changes in hydrophobic liquids after absorbing an inert gas such as nitrogen. The changes in the refractive index are...