Patent ID: 9072847
Filing Date: 2015-07-07
Classification: A61F,A61M

Abstract:
1. Apparatus for gas delivery, comprising: a gas reservoir comprising a cylindrical chamber and a piston, the cylindrical chamber comprising a first region defined by a first end of the chamber and a first face of the piston and a second region defined by a second end of the chamber and a second face of the piston; a delivery line between the first region of the gas reservoir and a gas outlet, the delivery line being provided with a valve to control pressure at the gas outlet; a first supply line between a first inlet connectable to a first gas supply and the first region of the gas reservoir; a pressure control line with an inlet connectable to a second gas supply, the pressure control line being coupled to the second region of the gas reservoir to thereby maintain a working pressure in the first region of the gas reservoir, said working pressure being higher than the pressure in the delivery line.