Patent ID: 8789525

Claim:
A humidifier adapted to be connected to a flow generator, the humidifier comprising: a humidifier cradle having a bottom surface with a heating element and a side face configured to engage the flow generator and facilitate attachment of the humidifier to the flow generator; a humidifier lid hinged to the humidifier cradle, the humidifier lid including a seal and an air outlet pipe configured to be connected to a hose to deliver a supply of pressurized, breathable gas to a patient via a patient interface; and a water container configured to store a supply of water used to humidify the supply of breathable gas and configured to be received by the humidifier cradle, the water container comprising: a tub lid; and a tub adapted to be coupled to the lid, the tub comprising: a base plate with a perimeter including a plurality of tabs with apertures; a tub base with a bottom peripheral edge that includes a rim defining an opening, the tub base including a plurality of tab receiving portions configured to receive the plurality of base plate tabs and a plurality of heat stakes that extend through the apertures in the base plate tabs, each heat stake having a melted head portion that is larger than a corresponding aperture; and a tub seal positioned between the base plate and the tub base, wherein the humidifier lid is pivotable to an open position that accommodates insertion of the water container into the humidifier cradle, and pivotable to a closed position that secures the water container in an operable position in the humidifier cradle, wherein the heating element is configured to contact the base plate of the tub when the water container is inserted into the humidifier cradle, wherein the humidifier lid is configured to be raised with the hose still attached, wherein the humidifier lid seal is configured to engage the tub lid when the humidifier lid is in the closed position, and wherein the tub lid is configured to communicate with the air outlet pipe when the humidifier lid is in the closed position.