公开(公告)号：US20210178198A1

公开(公告)日：2021-06-17

申请号：US17184752

申请日：2021-02-25

申请人： ResMed Pty Ltd

发明人： Robert Edward HENRY ,  Philip Rodney KWOK ,  Philip John GUNNING ,  Karthikeyan SELVARAJAN ,  James MORRISON ,  Paul Anthony GREEN ,  Christopher Kingsley BLUNSDEN ,  Gregory Robert PEAKE ,  Christopher John BAXTER

IPC分类号： A62B18/08 ,  A61M16/06

摘要： A patient interface assembly is configured to deliver a positively pressurized flow of breathable gas to a patient's airways. The patient interface assembly includes a patient interface configured to sealingly engage the patient's face and comprises a chamber configured to receive the pressurized flow of breathable gas. The patient interface assembly also includes headgear configured to support the patient interface on the patient's head and be tightened to one of a plurality of discrete tension settings. The headgear includes a tensioning element that is configured to contract in length to one of a plurality of discrete lengths when subjected to an electrical signal. Each discrete length of the tensioning element corresponds to a respective one of the plurality of discrete headgear tension settings.