Patent ID: 8596276

Claim:
A nasal respiratory mask system adapted to contact with the face of a user with a face-applying force to supply respiratory gas under positive pressure to the nose of the user, comprising at least a nasal mask, a frame, a clip device and a retention wire in a form of a loop, said nasal mask being a tubular member composed of a face contacting section constructed from an elastic body at one end of an opening and a frame mounting section constructed from an elastic body at the other end of the opening, said frame being a molded part with an internal space capable of communicating between a hose to supply respiratory gas under positive pressure and the nasal mask, having a mechanism to connect with the hose to supply positive pressure gas and a nasal mask mounting section allowing the nasal mask to mount on a periphery thereof, wherein the retention wire has a frame-retaining section and a protrusion section integrally connected to the frame-retaining section, wherein the frame receives the nasal mask in a manner that the nasal mask mounting section contacts and surrounds the frame mounting section with the frame-retaining section of the retention wire in contact with and squeezing the nasal mask mounting section onto the frame mounting section with a tightening force, and wherein the clip device is operative with the protrusion section of the retention wore such that the clip device captures and contacts adjacent pieces of the protrusion section and urges the adjacent pieces of the protrusion section together thereby increasing the tightening force of the mask mounting section onto the frame mounting section.