| CPC A61M 16/0616 (2014.02) [A61M 2210/0618 (2013.01); A61M 2210/0625 (2013.01)] | 19 Claims |
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1. An oral and nasal sealing interface pad, configured to provide positive pressure breathing gas to a user's airway, the oral and nasal sealing interface pad comprising:
a rigid part, one side of which has a circular opening for connecting the positive pressure breathing gas, and another side of the rigid part having a joint part; and
a lining pad, which is fixedly connected to the joint part and constructed to be located below a user's nose, for delivering the positive pressure breathing gas to a user's mouth and nasal airways, the lining pad including a nasal area corresponding to and configured to abut a user's nasal tip and a mouth area corresponding to and surrounding the user's mouth, and a space enclosed by the nasal area being connected to a space enclosed by the mouth area, together forming an integrated respiratory chamber,
wherein the nasal area only includes a nasal tip area and an alar area on two sides of the nasal tip area, the nasal tip area having at least one thin area for accommodating the user's nasal tip and connected to a first wing for abutting against a user's columella, and the alar area having at least one non-thin area thicker than the thin area in the nasal tip area,
wherein the first wing is connected to and extends only from an inner edge of the nasal tip area and has an outer surface having a friction coefficient greater than a friction coefficient of other parts of the nasal area, and
wherein an axial direction of the circular opening of the rigid part is parallel to a horizontal line, and the first wing is parallel to the horizontal line such that the first wing is configured to be inflated when the positive pressure breathing gas is provided to the oral and nasal sealing interface pad such that the first wing abuts the user's columella.
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