System and method for circuits to allow CPAP to provide zero pressure

摘要

A system comprises a respiratory delivery arrangement adapted to cover at least one respiratory orifice of a patient. The system also comprises a first conduit having a first end and a second end, the second end connected to the respiratory delivery arrangement. A positive pressure is provided to the respiratory orifice via the first conduit and a second conduit having a third end and a fourth end, the fourth end connected to the respiratory delivery arrangement. An exhaled gas is extracted from the respiratory orifice by one or both of a valve configured to redirect flow through the respiratory delivery arrangement and a venturi opening.

主权项

1. A system, comprising:
a respiratory mask adapted to cover at least one respiratory orifice of a patient; a respiratory device configured to deliver a positive pressure gas flow; a first conduit extending from a first end connected to the respiratory device to a second end connected to the respiratory mask, the first conduit including a valve movable between a first position and a second position, the first position being configured to seal an opening in a wall of the first conduit, and the second position being configured to obstruct air flow through the first conduit to the respiratory mask; a second conduit positioned within the first conduit and extending from a third end to a fourth end connected to the respiratory mask, the third end being separate from the first end; a sensing element for detecting data corresponding to a breathing pattern of a patient; and a controller for controlling the positive pressure gas flow based on the data detected by the sensing element and moving the valve to the first position when the positive pressure gas flow is above a predetermined pressure and to the second position when the positive pressure from the respiratory device is below the predetermined pressure.