The airway pressure support system 2 includes a housing 4 having an air inlet opening 54 and a filter assembly coupled to a plurality of receptacles of the housing. The filter assembly is in fluid communication with the air inlet opening. The filter assembly includes a housing portion 62, a first filter media portion 64 attached to the housing portion, and first and second spring members 84, 86 attached to the housing portion. Each of the first and second spring members has a floating portion and engages the plurality of receiving portions so that a sealing force is exerted on the filter assembly.気道内圧支持システム２は、空気吸入開口５４を持つハウジング４、及び前記ハウジングの複数の受容部に結合されるフィルタ組立体を含む。フィルタ組立体は、前記空気吸入開口と流体連通している。前記フィルタ組立体は、ハウジング部６２、前記ハウジング部に取り付けられる第１のフィルタ媒体部６４、並びに前記ハウジング部に取り付けられる第１及び第２のばね部材８４、８６を含む。前記第１及び第２のばね部材は各々、フローティング部を持ち、前記複数の受容部と係合し、封止力が前記フィルタ組立体に及ぼさせる。
