ALEXANDRIA, Va., June 16 -- United States Patent no. 12,653,934, issued on June 16, was assigned to FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH (Bad Homburg, Germany).
"Apparatus for extracorporeal blood treatment" was invented by Frank Biermann (Hamburg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pressure-measuring device according to the invention has a hydrophobic membrane, which is air permeable in the dry state and air impermeable in a moistened state, and a pressure sensor, which is in mechanical contact with the hydrophobic membrane and which is designed to follow a movement of the membrane. During the filling of a line system, air is separated via the hydrophobic membrane and, in the air-im...