Internal cannula mounted nebulizer

A system for delivery of breathing gas and aerosolized medicament to a patient, the system comprising:

• a delivery tube configured to supply a flow of breathing gas;
• a nebulizer configured to supply a flow of nebulized medicament;
• and
• a nasal interface having a first inlet, a second inlet, a mixing chamber in fluid communication with the first inlet and the second inlet, and an outlet in fluid communication with the mixing chamber to deliver a mixed flow of breathing gas and nebulized medicament, wherein the first inlet is coupled to a distal end of the delivery tube to receive the flow of breathing gas into the mixing chamber, and wherein the second inlet is coupled to an emitter of the nebulizer to receive the flow of nebulized medicament directly into the mixing chamber, the nasal interface further comprising a flow director having a first portion and a second portion;
• wherein the mixing chamber and the second inlet are aligned with a longitudinal axis of the outlet, such that mixing of the flow of breathing gas and the flow of nebulized medicament occurs directly behind the outlet and along a direction coaxial with the longitudinal axis, the second inlet positioned along the longitudinal axis at a point at which the flow of breathing gas has a theoretical zero flow rate, and
• wherein the first portion of the flow director is coupled to the nasal interface and adapted to receive the flow of breathing gas from the first inlet and direct the flow of breathing gas into the mixing chamber such that the breathing gas flows along the longitudinal axis, and the second portion is secured to the nebulizer and configured such that the flow of nebulized medicament is contained within the flow of breathing gas as it moves along the longitudinal axis of the outlet for delivery to the patient.