Mask
AssigneeFisher & Paykel Healthcare Limited
InventorsAlastair Edwin McAuley, Christopher Earl Nightingale, Aidan Mark Shotbolt, Ivan Milivojevic
Life of this patent
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Abstract
A mask is disclosed that has a gas outlet which is quiet and provides for a diffused outlet flow of gases. The outlet is preferably a slot formed between a hollow body and cover over said hollow body. The mask also preferably extends and seals under a user's chin in use.
Claims20
A patient interface for delivering a supply of gases to a user, the patient interface comprising:
- a body having a front side and a back side, the front side comprising a recess extending across at least a portion of the body, the body comprising an aperture positioned within the recess;
- a cushion coupled to a periphery of the body and configured to contact a face of the user in use;
- an insert coupled to the body and disposed in or about the recess, the insert constructed of a rigid material;
- an inlet defined through the insert, wherein the inlet is aligned with the aperture to form an inspiratory inlet configured to receive an inspiratory conduit for supplying the gases to the patient interface;
- and
- an expiratory vent for gases exhaled by the user into the patient interface, the expiratory vent formed between an edge of the insert and an edge of the body.
A patient interface for delivering a supply of gases to a user, the patient interface comprising:
- a body having a back side facing toward the user in use and a front side facing away from the user in use, the front side comprising a recess extending across at least a portion of the body, the recess comprising an upper edge and a lower edge;
- an insert coupled to the body and disposed between the upper edge and the lower edge of the recess, the insert constructed of a rigid material;
- and
- an expiratory vent for gases exhaled by the user into the patient interface, the expiratory vent formed between an edge of the insert and the upper edge or the lower edge of the recess.
An apparatus for delivering a supply of gases to a user, the apparatus comprising:
- a main body having a back side facing toward the user in use and a front side facing away from the user in use, the main body comprising:
- a body and an insert configured such that, when the body and the insert are joined together, an expiratory vent is formed between the body and the insert for gases exhaled by the user into the apparatus, each of the body and the insert constructed of a rigid material;
- the body comprising an inlet and the insert comprising a circular aperture, wherein the circular aperture is aligned with the inlet to form an inspiratory inlet for supplying the gases to the user.
Dependencies are inferred from the claim text.