SEALING CUSHION AND PATIENT INTERFACE DEVICE EMPLOYING SAME

摘要

A cushion (44) for a patient interface device (26) that has an inverted geometry. In particular, the cushion includes a support portion (56) having a first edge (60) and a second edge (62) located opposite the first edge, and a sealing flap (58) extending in a cantilevered fashion inwardly from an inner edge of the second edge of the support portion and toward the longitudinal axis (59) of the cushion.

主权项

1. A cushion for a patient interface device, comprising:
a support portion having a bottom edge and an engagement edge located opposite the bottom edge, the bottom edge lying in a first plane, the engagement edge being structured to engage a face of a user when the patient interface device is donned by the user, wherein the engagement edge extends at an angle with respect to a second plane that is parallel to the first plane that is less than or equal to +30 degrees and greater than or equal to −30 degrees; and a sealing flap extending in a cantilevered fashion inwardly from an inner edge of the engagement edge of the support portion and toward a longitudinal axis of the cushion, wherein a length of the sealing flap measured from a proximal end thereof located at a point where the sealing flap is connected to the support portion to a distal end thereof located at a point where the sealing flap defines an orifice is 15 mm or less.