BREATHING ASSISTANCE DEVICE COMPRISING A GAS REGULATING VALVE AND ASSOCIATED BREATHING ASSISTANCE METHOD

摘要

The invention relates to a breathing assistance device for a patient, the 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 the patient; a gas regulating valve interposed in the gas transmission duct at a proximal location, comprising a leakage orifice and an obstruction means capable of varying the opening of the leakage orifice upon signal of controlling means and allowing a bidirectional gas flow through the leakage orifice in both expiration and inspiration phases.

主权项

1. 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 comprising at least a leakage orifice between the inside and outside of said duct, and an obstruction element capable of varying the opening of said leakage orifice upon signal of a controller, characterised in that the gas regulating valve is interposed in said duct at a proximal location, and that the obstruction element is capable of allowing a bidirectional gas flow through said leakage orifice in both expiration and inspiration phases.