Patent ID: 8240307
Filing Date: 2012-08-14
Classification: A61M

Abstract:
1. An apparatus for non-invasive mechanical ventilation, comprising: a) an air flow generator for generating an air flow deliverable to a patient's lungs and which creates a vortex in the aerial ducts of said patient's lungs, said air flow being generated according to a predetermined bi-level positive pressure cycle, said cycle comprising a succession of an Inspiration Positive Air Pressure (“IPAP”) step having a pressure P b) an air conveyance apparatus comprising a duct and a nasal mask for conveying said air flow to a patient's aerial ducts, said air conveyance apparatus when in use being arranged between said air flow generating means and said patient; and, c) a pneumatic air subtraction system for subtracting a predetermined air amount from said air flow, said pneumatic air subtraction system being in pneumatic connection with said air conveyance apparatus, wherein said pneumatic air subtraction system is adapted to subtract from said air flow a pre-determined amount of air before said determined amount of air reaches said aerial ducts for carrying out said IPAP step so as to temporarily prevent said pre-determined amount of air from reaching said aerial ducts, and wherein said pneumatic air subtraction system is adapted to subtract said pre-determined amount of air at the beginning of said IPAP step.