This invention relates to a patient interface comprising at least one nasal prong or an outlet of said patient interface to be received by a user’s nare(s) or mouth； a gases delivery side member extending from a side of the at least one nasal prong or said outlet； and wherein the gases delivery side member comprises of a lumen for a flow of gases from an inlet of the patient interface to the at least one nasal prong or said outlet； a collapsible portion； at least one elbow portion or flexible portion, located substantially at or toward one or both of a downstream end of said gases delivery member or an upstream end of said gases delivery member.本發明涉及一種患者介面，該患者介面包括：所述患者介面的至少一個鼻叉管或出口，該至少一個鼻叉管或出口將由使用者的鼻孔或嘴接收；氣體遞送側構件，該氣體遞送側構件從該至少一個鼻叉管或所述出口的一側延伸；並且其中該氣體遞送側構件包括內腔，該內腔用於氣體流從該患者介面的入口到該至少一個鼻叉管或所述出口；可塌縮部分；至少一個彎管部分或柔性部分，該至少一個彎管部分或柔性部分基本上位於或朝向所述氣體遞送構件的下游端或所述氣體遞送構件的上游端中的一個或兩個。
