Patent ID: 8366681

Claim:
A high flow volume nasal irrigation device, comprising: a) a tube configured to convey a liquid from a reservoir in a chamber under an elevated chamber pressure to a lower pressure outside the chamber, the tube comprising a free end and a housing at a second end adjoined to a cap with a coaxial cap nipple; b) a valve assembly proximal the tube inside the housing, the valve assembly comprising a disk-like valve and a plurality of housing standoffs configured to stop the valve but allow a fluid flow in the housing and out the cap nipple, an outer periphery of the valve and the housing forming an area for the fluid flow; c) a cylindrical elastic valve seat adjoined to the cap nipple and forming a gap with the valve on the standoffs, the valve seat having an inside diameter smaller than the valve and a restoring force in opposition to a force applied by the valve on the valve seat in response to a fluid pressure; and d) a spring configured to oppose the valve moving toward the valve seat from the standoffs and assist in returning the valve from the valve seat to the standoffs and thus with the valve seat create a periodic pulsatile fluid flow in the cap nipple in response to a chamber pressure which exceeds a critical chamber pressure threshold.