Nasal interface

In a nasal interface base for use in connection with a CPAP system, the CPAP system including a pressurized air supply unit, a nasal interface, and first and second air supply hoses adapted to supply pressurized air supplied by the pressurized air supply unit to the interface, the interface including a base member and a resilient nasal pillow, the pillow including a lower border adapted to releasably mate with the base, the improvement comprising:

• the base defining connection structure for releasably connecting the lower border of the pillow to the base;
• the base also defining left and right airflow inlets leading to respective left and right airflow channels, the channels fluidly communicating the respective first and second air supply hoses with a hollow interior of the base;
• the left and right channels each being positioned within the base to receive a flow of pressurized air from respective first and second hoses, and to redirect the flow from a first direction parallel to respective sidewalls of the first and second hoses to a second direction which is not parallel to the first direction.