초록 ▼

A nasal mask has a shell portion that is a hollow enclosure with a rearwardly facing opening that is defined by edge portions of the shell portion. A resiliently deformable endless interface member engages and extends around the edge portion of the opening and forms a seal between the shell portion

A nasal mask has a shell portion that is a hollow enclosure with a rearwardly facing opening that is defined by edge portions of the shell portion. A resiliently deformable endless interface member engages and extends around the edge portion of the opening and forms a seal between the shell portion and the user's face. The shell portion and the interface member are generally symmetrical about a median place. The shell portion has two gas inlet orifices, one on each side of the median place. Each orifice is provided with an attachment mechanism upon which is attachable a swivel inlet. The swivel inlets may be rotated through 180 degrees and locked in place.

대표청구항 ▼

A nasal mask has a shell portion that is a hollow enclosure with a rearwardly facing opening that is defined by edge portions of the shell portion. A resiliently deformable endless interface member engages and extends around the edge portion of the opening and forms a seal between the shell portion

A nasal mask has a shell portion that is a hollow enclosure with a rearwardly facing opening that is defined by edge portions of the shell portion. A resiliently deformable endless interface member engages and extends around the edge portion of the opening and forms a seal between the shell portion and the user's face. The shell portion and the interface member are generally symmetrical about a median place. The shell portion has two gas inlet orifices, one on each side of the median place. Each orifice is provided with an attachment mechanism upon which is attachable a swivel inlet. The swivel inlets may be rotated through 180 degrees and locked in place. y to said interface, and a pressure regulating device disposed within or in fluid communication with said conduit, said pressure regulating device comprising or including: a housing including an inlet and an outlet and a venting aperture, in use said inlet and outlet being in fluid communication or integrated with said conduit, a valve member disposed within said housing, in the flow path between said inlet and said outlet, wherein the pressure of gases flowing from said inlet to said outlet being below a predetermined level said valve member blocking said vent aperture and said gases thereby flowing from said inlet to said outlet, and wherein said gases being above said predetermined level said valve member allowing at least a portion of said gases to flow through said vent aperture, an adjustment engaged with said valve member and adapted to adjust said predetermined level, and an adjustment lock adapted to engage with or about said adjustment, and adapted, such that with said adjustment lock engaged said predetermined level is prevented from adjustment, is tamper evident and covers said adjustment from external observation. 7. A breathing assistance apparatus as claimed in claim 6 wherein said apparatus further comprises humidification means disposed within or in fluid communication with said gases supply, said conduit and said interface, thereby humidifying said gases. 8. A method of manufacturing a system for regulating the pressure of gases supplied to a patient to assist said patient breathing comprising the steps: assembling a valve and configuring said valve to in use relieve the pressure of said gases substantially at a predetermined pressure, adjusting said predetermined pressure to a desired pressure, and preventing further adjustment such that said predetermined pressure is permanently set. 9. A method of manufacturing a system for regulating the pressure of gases supplied to a patient to assist said patients breathing comprising the steps as claimed in claim 8 further comprising the steps of preventing external observation of said valve. 10. A method of manufacturing a system for regulating the pressure of gases supplied to a patient to assist said patients breathing comprising the steps as claimed in claim 9 further comprising the steps of preventing tampering by said patient.