公开(公告)号：NZ728273A

公开(公告)日：2018-07-27

申请号：NZ72827312

申请日：2012-11-09

Applicant: RESMED LTD

Inventor： HOLLEY LIAM ,  KLASEK PAUL JAN ,  FRATER ROBERT ,  YANG QUANGANG ,  GOSAIN PALLAVI

IPC: A61M16/20 ,  A61M16/06

Abstract: A respiratory treatment exchange having an exhalation conduit (104) with a valve (318) which controls the flow of gas between the interior of the conduit and the atmosphere. The valve can comprise a flexible or pivotal cover (2185) which blocks an aperture in the exhalation conduit. The cover is biased or tensioned towards a closed position such that a differential pressure is required to actuate the valve and allow air to pass through the aperture. The vent may be configured to require a positive pressure in the exhalation conduit before it actuates and vents the air to the atmosphere (HPVE side). The valve may further have a configuration (LPVE side) which allows air to flow from the atmosphere into the exhalation conduit when a sufficient negative pressure is formed in the exhalation conduit.