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US 12,594,395 B2Granted
Patient interfaces with condensation reducing or compensating arrangements
AssigneeFisher & Paykel Healthcare Limited
InventorsAndrew John Partington, Peter Kenneth Graham, Mark John Arrowsmith, Christopher Earl Nightingale, Vitaly Kapelevich
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Abstract
Mask assemblies, breathing circuits and related components for respiratory therapy systems 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.
Claims12
A patient interface comprising:
- a body adapted to form a seal with a user's face, the body comprising:
- an inner layer;
- an outer layer;
- an insulation space defined by a space between the inner layer and the outer layer;
- and
- a coupling for fluid connection to a gas delivery system;
- wherein the insulation space is completely sealed from an interior and an exterior of the patient interface and wherein the insulation space is filled with a fixed mass of a medium at a pressure lower than atmospheric pressure.
4 more elements
Dependencies are inferred from the claim text.