ALEXANDRIA, Va., July 16 -- United States Patent no. 12,357,733, issued on July 15, was assigned to FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH (Bad Homburg, Germany).
"Pump system, dialysis machine, and method of operating a pump" was invented by Frank Hedmann (Volkach, Germany), Sven Sebesta (Hausen, Germany) and Torsten Hochrein (Hausen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pump system for generating a volume flow of a dialysis solution in a dialysis machine, the pump system includes at least one piston pump having a piston that cooperates with a working fluid, which exerts a force on a conveying means, and in particular on a membrane. The pump system includes setting means, with which a c...