ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,508,155, issued on Dec. 30, was assigned to ZOLL Circulation Inc. (San Jose, Calif.).

"Fluid cassette with polymeric membranes and integral inlet and outlet tubes for patient heat exchange system" was invented by Christoph Matthias Pistor (Santa Cruz, Calif.), Jeremy Thomas Dabrowiak (Redwood City, Calif.), Craig Wendell Pendry (Milpitas, Calif.) and Christo Petrov Pamichev (Cupertino, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A working fluid cassette for an intravascular heat exchange catheter includes a frame holding two closely spaced, square polymeric membranes along the sides of which are disposed inlet and outlet tubes. Working fluid f...