Patient interfaces with condensation reducing or compensating arrangements

Patent metadata

Field	Value
Publication number	US-10357627-B2
Application number	US-201414772765-A
Country	US
Kind code	B2
Filing date	Mar 4, 2014
Priority date	Mar 4, 2013
Publication date	Jul 23, 2019
Grant date	Jul 23, 2019

Abstract

Mask assemblies, breathing circuits and related components include configurations for reducing condensation within the mask and/or inhibiting or preventing condensation from coming into contact with a user of the mask. The mask assemblies can incorporate heating elements (such as heating coils), insulating spaces or barrier layers.

First claim

What is claimed is:

1. A patient interface comprising:
a body comprising a sealing surface adapted to form a seal with a user's face;
a coupling that communicates with a breathing chamber at least partially defined by the body, the coupling configured for fluid connection to a pressurized gas delivery system;
a water vapor breathable layer; and
an outer layer with at least one hole that allows gases to flow into an intermediary chamber between the water vapor breathable layer and the outer layer;
wherein the breathing chamber is located between the water vapor breathable layer and the sealing surface.

2. The patient interface of claim 1 , further comprising a vent that allows a flow of gases from an interior of the breathing chamber to an exterior of the body.

3. The patient interface of claim 2 , wherein the vent is configured so that the flow of gases entrains air from the environment into the intermediary chamber.

4. The patient interface of claim 2 , wherein the vent comprises a hydrophobic material and an area adjacent the vent comprises a hydrophilic material.

5. The patient interface of claim 1 , wherein the holes are disposed at or near the perimeter of the outer layer.

6. The patient interface of claim 1 , wherein the body comprises a silicone seal member that defines the sealing surface.

Assignees

• Fisher & Paykel Healthcare Ltd

Inventors

• Partington Andrew John
• Graham Peter Kenneth
• Arrowsmith Mark John
• Nightingale Christopher Earl
• Kapelevich Vitaly

Classifications

• A61M16/0816

  Joints or connectors · CPC title

• A61M2205/14

  Detection of the presence or absence of a tube, a connector or a container in an apparatus · CPC title

• A61M16/1045

  Devices for humidifying or heating the inspired gas by using recovered moisture or heat from the expired gas · CPC title

• A61M16/06

  Respiratory or anaesthetic masks · CPC title

• A61M16/0875

  Connecting tubes · CPC title