Breathing assistance apparatus
First Claim
Patent Images
1. A breathing assistance apparatus comprising:
- a mask body being hollow and having an opening, the opening configured to receive a nose, or nose and mouth, of a patient, the hollow of the mask body having a coupling portion that defines at least a portion of a breathing cavity, the mask body being formed of a relatively inflexible material that provides rigidity for the mask;
a sealing interface arranged to surround the opening in the mask body and configured to be joined to the coupling portion that defines at least a portion of the breathing cavity, the sealing interface configured to be joined to the coupling portion of the mask body in a sealing manner and the sealing interface being configured to seal around the patient'"'"'s facial contours, at least a portion of the sealing interface being formed of a relatively softer plastics material when compared to the relatively inflexible material of the mask body, the sealing interface comprising an outer sealing member and an inner sealing member, the outer sealing member having a thin region and a thick region, the thin region being located in a nasal bridge region configured to extend over and contact a patient'"'"'s nasal bridge in use, the inner sealing member being absent in the nasal bridge region; and
a vent configured to allow expiratory gases to be expelled and an elbow connector configured to connect between a conduit and the mask body.
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Accused Products
Abstract
A breathing assistance apparatus is designed for use with delivery of respiratory gases to a patient. The breathing assistance apparatus includes a patient interface, having a body section adapted to cover the nose, or nose and mouth of a patient and a sealing interface. The sealing interface includes at least an outer sealing member. The outer sealing member (201) is adapted to attach to the body section in a sealing manner and has a substantially thin section (203) in at least its nasal bridge region. The thin section is substantially thinner than the rest of the outer sealing member.
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Citations
23 Claims
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1. A breathing assistance apparatus comprising:
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a mask body being hollow and having an opening, the opening configured to receive a nose, or nose and mouth, of a patient, the hollow of the mask body having a coupling portion that defines at least a portion of a breathing cavity, the mask body being formed of a relatively inflexible material that provides rigidity for the mask; a sealing interface arranged to surround the opening in the mask body and configured to be joined to the coupling portion that defines at least a portion of the breathing cavity, the sealing interface configured to be joined to the coupling portion of the mask body in a sealing manner and the sealing interface being configured to seal around the patient'"'"'s facial contours, at least a portion of the sealing interface being formed of a relatively softer plastics material when compared to the relatively inflexible material of the mask body, the sealing interface comprising an outer sealing member and an inner sealing member, the outer sealing member having a thin region and a thick region, the thin region being located in a nasal bridge region configured to extend over and contact a patient'"'"'s nasal bridge in use, the inner sealing member being absent in the nasal bridge region; and a vent configured to allow expiratory gases to be expelled and an elbow connector configured to connect between a conduit and the mask body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A breathing assistance apparatus comprising:
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a mask body being hollow and having an opening, the opening configured to receive a nose, or nose and mouth, of a patient; and a mask cushion configured to be joined to the mask body and arranged to surround the opening in the mask body, the mask cushion configured to seal around the patient'"'"'s facial contours, the mask cushion having at least one indented section configured to accommodate the patient'"'"'s facial contours, and the mask cushion comprising; an outer sealing sheath and an inner sealing member, the outer sealing sheath having a thin region located in a nasal bridge region and configured to extend over and contact a patient'"'"'s nasal bridge in use, the thin region having a reduced cross-sectional thickness compared to a remainder of the outer sealing sheath; the inner sealing member being absent in the nasal bridge region. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification