Patent ID: 7351232

Claim:
An outlet portion ( 1 ) for a nasal rinser, comprising: an outlet end ( 2 ), a connection end ( 3 ) and a nozzle shaped channel ( 4 ) between the outlet and connection ends configured for use as an outlet portion of a nasal rinser, the outlet end, the connection end, and the nozzle shaped channel being a unitary structure of one material, the nozzle shaped channel ( 4 ) having an internal hourglass shape comprising a channel restriction section ( 5 ) and an expanded channel outlet section ( 6 ), wherein, the outlet end terminates with a distal end of the expanded channel outlet section, the expanded channel outlet section expands toward the outlet end with a maximum interior diameter of the expanded channel outlet section being located at the distal end of the outlet end, in use, when a liquid entering the connection end is pressed through the restriction section, a pressure will increase when the liquid passes through the restriction section and a velocity increase when the liquid reaches the expanded channel outlet section so that the liquid leaves the outlet end under turbulent flow so that the liquid fills out a nasal cavity while avoiding a jet spraying directly on a mucous membrane of the nasal cavity, the nozzle shaped channel is housed in an enlarged circumferential portion ( 12 ) shaped to seal against edges of an interior of a user's nostril, an exterior of the enlarged circumference portion ( 12 ) is droplet or balloon shaped, an inner diameter of the expanded channel outlet section ( 6 ) is greater than an inner diameter of the channel restriction section ( 5 ), the connection end comprises an interior portion shaped to fit onto a conical tip, the connection end, the nozzle shaped channel, and the outlet end together define a straight passageway extending through a longitudinal axis from the outlet end to the connection end, and a largest cross-sectional exterior diameter of the connection end being less than a largest cross-sectional exterior diameter of the enlarged circumferential portion ( 12 ).