Patent ID: 7743768

Claim:
A cushion for a patient interface device, the cushion comprising: a first end portion structured to contact a portion of a patient's face; a second end portion structured to couple to a portion of the patient interface device, the second end portion being opposite the first end portion; a chamber disposed between the first end portion and the second end portion, the chamber structured to receive and store a dampening medium therein; an orifice in operative communication with the chamber, the orifice not being selectively openable and closable by a user during use and being structured to allow the continuous passage of the dampening medium to and from the chamber when the patient interface device is donned by the user; an outer wall connecting a first edge of the first end portion to a first edge of the second end portion; and an inner wall connecting a second edge of the first end portion to a second edge of the second end portion, wherein the chamber is defined by the first end portion, the inner wall, the outer wall, and at least one of the second end portion and the portion of the patient interface device.