Patent ID: 11925759
Assignee: FISHER & PAYKEL HEALTHCARE LIMITED
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A nasal seal configured to be removably coupled to a frame of a patient interface, the nasal seal comprising:
a seal body formed of a soft flexible material and defining an inner cavity and one or more delivery openings for supply of breathing gases from the inner cavity to a patient;
wherein the seal body comprises a central portion and a side portion extending from each end of the central portion, the seal body further comprising an interior side and an exterior side, wherein the interior side of the central portion is configured to extend across a base of a user's nose and the interior side of each of the side portions is configured to extend across a side of the user's nose, wherein the interior side of the seal body is supple and configured to conform under internal pressure to surfaces of the user's nose, including, at the side portions of the seal body, to outside surfaces of the side of the user's nose; and
a support formed of a relatively rigid material and supporting a portion of the seal body;
wherein the support defines a mount for mounting the nasal seal to the frame of the patient interface, the mount comprising a first member that is connectable to a second member, and the first member and the second member capture a portion of the seal body between them,
wherein the exterior side of the seal body defines an inlet opening configured to admit breathing gases into the inner cavity of the seal body, and the portion of the seal body captured between the first member and the second member comprises a protrusion that circumscribes the inlet opening,
wherein the protrusion is offset inwardly by a portion of the exterior side that extends generally normal or perpendicular to an axis of the inlet opening.