Patent ID: 6701927
Filing Date: 2004-03-09
Classification: A61B,A61M

Abstract:
A full-face mask cushion to sealingly connect a mask to a wearer's face, the cushion comprising:a nasal bridge region, a cheek region and a chin region; first membrane comprising a substantially triangularly-shaped frame of resilient material having a first molded inwardly curved rim of said first membrane; a second membrane of resilient material, said second membrane being thinner and more flexible than said first membrane, said second membrane having a second molded inwardly curved rim, said second membrane curved rim spaced a distance from said first membrane curved rim, said distance greater than a thickness of the first molded inwardly curved rim, said distance measured when the mask is not in use, a portion of said second membrane curved rim forming a face contacting seal structured to present a convex sealing surface with the wearer's face.