ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,701, issued on June 30, was assigned to University of Pittsburgh-Of the Commonwealth System of Higher Education (Pittsburgh).

"Catheter insertion systems" was invented by Cameron Dezfulian (Pittsburgh), William W. Clark (Wexford, Pa.), Ehsan Qaium (Pittsburgh) and Dennis Wist (Pittsburgh).

According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed catheter insertion systems enable the user to identify the location of the needle based on the electrical properties of subcutaneous tissue relative the electrical properties of other fluids such as blood or air. Disclosed systems can include one or more of the following features: 1) the catheter assembly is m...