A portable positive pressure breathing apparatus includes a demand valve with a supply inlet port adapted to be connected to a pressurized source of oxygen and an outlet port adapted to be connected to the inlet of a patient's breathing appliance. The demand valve further includes a reference chamber...http://www.google.es/patents/US20060243278?utm_source=gb-gplus-sharePatente US20060243278 - Portable gas powered positive pressure breathing apparatus and method
Portable gas powered positive pressure breathing apparatus and method
Número de solicitud: 11/475,373 Número de publicación: US 2006/0243278 A1 Fecha de presentación: 27 Jun 2006 Patente emitida: US7721735 ( Fecha de emisión 25 May 2010)
