According to the invention, methods and devices for increasing cardiopulmonary circulation induced by chest compression and decompression when performing cardiopulmonary resuscitation are provided. According to one method, a pressure responsive inflow valve is coupled to a patient's airway. Chest compressions...http://www.google.fr/patents/US7210480?utm_source=gb-gplus-shareBrevet US7210480 - Shock treatment systems and methods
