Patent ID: 7228859
Filing Date: 2007-06-12
Classification: A61M

Abstract:
1. A humidifier assembly comprising a water supply container enclosing a water containing reservoir; a humidifier vessel comprising a water holding cavity having an inlet adjacent to the bottom thereof, a respiratory gas inlet, a respiratory gas outlet, a gas pressure vent port, a water level control port, and a water level control pipe communicating with said water level control port; a first one-way valve for directing gas flow through said water level control pipe to said water supply container; a second one-way valve for directing gas flow from said water supply container to said gas pressure vent port; first piping for directing water from said water supply container to said humidifier vessel; second piping cooperating with said first one-way valve and said second one-way valve for equalizing pressure between said water supply container and said humidifier vessel; and wherein said second piping comprises tubing extending between said water supply container and said gas pressure vent port and said water level control port.