Pressure actuated valve systems and methods

摘要: Systems and methods are provided for decreasing intracranial pressure enhancing circulation, as well increasing the respiratory rate encouraging spontaneous respiration. According to such methods, a valve system is coupled with person's airway. The has an exhalation patient port that interfaces includes diaphragm having textured surface. positioned across seat contacts distal end of seat, configured prevent or impede gas flow lungs until expiratory equals exceeds opening valve, at which time moves away from create open exhaust channel.