Breathable respiratory mask
AssigneeFisher & Paykel Healthcare Limited
InventorsBrett John Huddart, Denny Adianto Purnomo, Kevin Blake Powell, Bhavna Patel, Emma Louise Duckworth
Life of this patent
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Abstract
A patient interface is disclosed which is comfortable for the user to wear and includes at least in part a moisture permeable or breathable area in the body of the patient interface. In another embodiment the patient interface is a strapless mask that is moulded to fit the contours of a user's face and maximise the mask-to-skin seal. An adhesive material is bonded to the mask cushion and is stamped in place to form substantially the same shape as the cushion such that it fits the facial contours of the user.
Claims20
A patient interface adapted for connection to a humidification system for delivering a supply of gases to a user, said patient interface in use in fluid communication with said humidification system to provide a substantially sealed flow path for said supply of gases to the user, said patient interface comprising:
- a rigid body having at least one cut-out area,
- a sealing member configured to in use rest against a face of the user,
- said at least one cut-out area covered with a moisture permeable film formed of hydrophilic polyester block copolymer or perfluorosulfonate ionomer membrane, whereby said moisture permeable film alleviates a build up of water condensation within said rigid body.
A user interface comprising:
- a hollow body comprising a front surface and an inlet positioned in the front surface, the inlet being configured for connection to an inspiratory conduit, the hollow body comprising a cushion that is configured to rest against a skin surface of a user and to seal against the skin surface;
- the hollow body comprising at least one opening;
- a moisture permeable film, wherein the moisture permeable film comprises a membrane that allows water vapour to pass through it but not air, covering the at least one opening in order to reduce the formation of water droplets inside of the hollow body during prolonged humidification treatment;
- and
- headgear connected to the hollow body such that the headgear can secure the hollow body to the face of the user.
A user interface comprising a hollow body, the hollow body being configured to encircle at least one of the nose and the mouth, the hollow body comprising a front surface and an inlet, the inlet being configured for connection to an inspiratory conduit, the hollow body comprising a cushion that is configured to rest against a skin surface of a user and to seal against the skin surface and the hollow body comprising means for allowing water vapour to pass through while not allowing the transmission of air.
Dependencies are inferred from the claim text.