Resmed Pty Ltd

Charles Harry Finch

Muditha Pradeep Dantanarayana

Chia Ik Tan

Stewart Joseph Wagner

Justin John Formica

Joseph Samuel Ormrod

Jamie Graeme Wehbeh

Richard Llewelyn Jones

Jamie Graeme Wehben

Air delivery adapter for respiratory mask with heat and moisture exchanger unit for respiratory mask

Air delivery adapter for respiratory mask

A patient interface includes a cushion assembly adapted to form a seal around the patient's nose and/or mouth and a gas washout vent configured to allow a flow of patient exhaled COto an exterior of the patient interface to minimise rebreathing of exhaled COby the patient. The cushion assembly defines a plenum chamber pressurised at a pressure above ambient pressure in use. At least one volume reducing member is provided within the plenum chamber to reduce an effective internal volume of the plenum chamber. The at least one volume reducing member is arranged to separate a main volume of the plenum chamber for delivery of the therapy pressure from deadspace volume provided at least superior the entrance to the patient's nasal passages. The main volume is adapted to be in direct fluid communication with the patient's nose and/or mouth and the vent.

Patient interface with volume reducing member

A vent system for use during respiratory therapy with a flow of pressurized gas may provide a continuous vent flow of gas. The vent system may include a vent housing having an outer wall; an inner wall, the inner wall defining an inlet for the flow of gas; and a base positioned between the outer wall and the inner wall, the base having at least one first orifice and at least one second orifice. The vent system may include a membrane, the membrane being shaped and dimensioned such that the membrane does not cover the at least one first orifice to allow the vent flow through the at least one first orifice, and the membrane being shaped and dimensioned such that in a first position the membrane is positioned over the at least one second orifice to allow the vent flow through the at least one second orifice.

Vent and vent adaptor for patient interface

Heat and moisture exchanger unit for respiratory mask

Pair of rigidizer arms for respiratory mask

Vent unit for air delivery adapter for respiratory mask

Combination cushion frame and rigidizer arms for respiratory mask

Combined heat and moisture exchanger for respiratory mask

Combination respiratory mask and heat and moisture exchanger unit

Respiratory mask air delivery adapter assembly

Growing community of inventors

Sydney, Australia

Charles Harry Finch