Abstract: The present invention relates generally to devices and methods for finite control and regulation of patient intrathoracic pressures, and more specifically, to devices and methods that are finitely adjustable within a range set by an operator for regulating a patient intrathoracic pressures during repeated cycling events (i.e. respiration). The enhanced means includes a dual area valve on an exhalation and/or inhalation port of a device such that the valve is biased against the pressure necessary to evacuate and/or inflate the lungs of that patient by at least a partial volume thereof. The enhanced means for regulating intrathoracic pressure are applicable in a number of medically important therapies, including but not limited to, conditioning of pulmonary systems for acclimation to altered environmental conditions, reconditioning of pulmonary system after operating in a diminished state, and application in cardiopulmonary resuscitation procedures.

Abstract: This invention pertains generally to ventilation devices, and more particularly to a low cost constant pressure, variable flow blower powered ventilation device that is fully functional with a mask and which can be adapted to a number of applications including (1) a respiratory device used for automatic resuscitation of patients needing emergency ventilation, (2) emergency backup ventilation capabilities for hospitals and other healthcare institutions, and (3) positive pressure support therapy for patients suffering from obstructive sleep apnea among other diseases and respiratory conditions.