公开(公告)号：US08573214B2

公开(公告)日：2013-11-05

申请号：US13687680

申请日：2012-11-28

Applicant: ResMed Limited

Inventor： Aaron Samuel Davidson ,  Robin Garth Hitchcock ,  Matthew Eves ,  David John Worbuys ,  Susan Robyn Lynch

IPC: A62B18/02

CPC classification number: A61M16/0622 ,  A61M16/0057 ,  A61M16/06 ,  A61M16/0611 ,  A61M16/0616 ,  A62B18/08 ,  Y10T29/49

Abstract: A cushion for a patient interface that delivers breathable gas to a patient includes a base wall structured to be connected to a frame, an underlying support cushion extending away from the base wall towards the patient's face in use, and a membrane provided to substantially cover at least a portion of the underlying cushion. The membrane is adapted to form a continuous seal on the patient's face. The underlying cushion has a spring-like connection with the base wall. The underlying cushion and/or base wall define a spring constant that varies along a length of the seal.