| 摘要 |
The invention relates to a breathing assistance device for a patient breathing in successive cycles, each cycle being defined by at least an inspiration phase and at least an expiration phase, said breathing assistance device including : - a source of respiratory pressurised gas, - a gas transmission duct comprising a distal end coupled to said source and a proximal end coupled to said patient, - a gas regulating valve (50) comprising at least a leakage orifice (531 ) between the inside and outside of said duct, and an obstruction element (54) capable of varying the opening of said leakage orifice (531 ) upon signal of a controller, characterised in that the gas regulating valve (40) is interposed in said duct at a proximal location, and that the obstruction element (54) is capable of allowing a bidirectional gas flow through said leakage orifice (531 ) in both expiration and inspiration phases. The invention also relates to a breathing assistance method for assisting a patient with a breathing assistance device. |
