Patent ID: 8528558
Filing Date: 2013-09-10
Classification: A61M,A62B

Abstract:
1. A respiratory mask, the respiratory mask comprising: (i) a patient interface structured for communication with a patient's airways; (ii) a gas inlet in the form of a rotatable elbow to supply pressurized breathable gas at a pressure elevated above atmospheric pressure to the patient interface; and (iii) a gas washout vent insert on the rotatable elbow, the gas washout vent insert having a plurality of holes, said holes being structured to allow adequate CO wherein said plurality of holes is arranged in a plurality of rows, each of said rows having at least 3 of said holes, and wherein each of the holes has a first end positioned on an inside surface of the gas washout vent insert and a second end positioned on an outer surface of the gas washout vent insert, and wherein the first end of each hole has a diameter that is larger than a diameter of the second end of each hole.