ALEXANDRIA, Va., May 26 -- United States Patent no. 12,636,471, issued on May 26, was assigned to CSFRefresh Inc. (Redmond, Wash.).
"Programmable CSF metering shunt" was invented by Tom Saul (Moss Beach, Calif.) and Kristof Hovaten (San Bruno, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An implantable body fluid drainage system includes a metering shunt having a housing with an internal chamber. A movable barrier divides the chamber into a first section and a second section, and the barrier can be displaced by a differential pressure. A first powered inlet valve providing a fill path to the first section of the chamber, and a first powered drain valve providing a drain path from the first section o...