A nasal pillow section for use as part of an apparatus for providing a stream of gases to a user, the pillow section in use located in front of the upper lip and below the nostrils of a user, the pillow section comprising a pillow gasket having a gases aperture which receives a stream of gases in us
A nasal pillow section for use as part of an apparatus for providing a stream of gases to a user, the pillow section in use located in front of the upper lip and below the nostrils of a user, the pillow section comprising a pillow gasket having a gases aperture which receives a stream of gases in use, and nasal pillows fluidically connected to the pillow gasket which are adapted to substantially seal against the nostrils of a user in use, so that substantially the whole of the stream of gases entering the gasket through the aperture passes into the nasal pillows from the pillow gasket and is delivered to the user, the lower inner surface of the pillow gasket shaped so that in use contact between the upper lip of a user and the pillow gasket is minimised.
대표청구항▼
1. A nasal pillow section for use as part of an apparatus for providing a stream of gases to a user, said nasal pillow section in use located in front of an upper lip and below nostrils of said user, said nasal pillow section comprising: a pillow gasket comprising a manifold having a gases aperture
1. A nasal pillow section for use as part of an apparatus for providing a stream of gases to a user, said nasal pillow section in use located in front of an upper lip and below nostrils of said user, said nasal pillow section comprising: a pillow gasket comprising a manifold having a gases aperture at a distal end that receives a stream of gases in use;nasal pillows having lower ends fluidically connected to a proximal end of said manifold of said pillow gasket, the nasal pillows being adapted to substantially seal against said nostrils of said user in use so that substantially a whole of said stream of gases passes into said nasal pillows from said pillow gasket and is delivered to said user,a lower inner surface of said manifold having a height direction extending from said gases aperture toward said nasal pillows, the lower inner surface comprising a first concave portion curving inwardly along the height direction, the first concave portion extending from an area at the lower ends of the nasal pillows and to a distal end of the pillow gasket; andan upper surface of said manifold, on an opposite side from the lower inner surface, the upper surface having a height direction extending from said gases aperture toward said nasal pillows, the upper surface comprising a second concave portion curving inwardly along the height direction, the second concave portion extending from an area at the lower ends of the nasal pillows and to a distal end of the pillow gasket. 2. A nasal pillow section as claimed in claim 1, wherein said pillow gasket further comprises an open lower front portion that acts as said gases aperture and the first concave portion of said lower inner surface is positioned between base portions of said nasal pillows and a lower rear part of said open lower front portion. 3. A nasal pillow section as claimed in claim 2, wherein an inwards curve of the first concave portion of said lower inner surface results in a depth for the first concave portion such that an upper portion of said lower inner surface is positioned 3 mm forward of a lower edge of said lower inner surface. 4. A nasal pillow section as claimed in claim 3, wherein said lower inner surface of said pillow gasket has a width of between 30 and 50 mm. 5. A nasal pillow section as claimed in claim 4, wherein an outer height of said lower inner surface of said pillow gasket defined between a laterally outer side of a junction between said pillow gasket and said pillows and a lower rear part of said open lower front portion wall is between 20 mm and 30 mm. 6. A nasal pillow section as claimed in claim 5, wherein said outer height of said lower inner surface is between 25 mm and 27 mm. 7. A nasal pillow section as claimed in claim 6, wherein an inner height of said lower inner surface between an inner side of said pillows and said lower rear part of said open lower front portion wall is between 20 mm and 30 mm and less than said outer height of said lower inner surface. 8. A nasal pillow section as claimed in claim 7, wherein said inner height of said lower inner surface is between 23 mm and 25 mm. 9. A nasal pillow section as claimed in claim 5, wherein an inner height of said lower inner surface between an inner side of said pillows and said lower rear part of said open lower front portion wall is between 20 mm and 30 mm and less than said outer height of said lower inner surface. 10. A nasal pillow section as claimed in claim 9, wherein said inner height of said lower inner surface is between 23 mm and 25 mm. 11. A nasal pillow section as claimed in claim 3, wherein said lower inner surface has a width of 40 mm. 12. A nasal pillow section as claimed in claim 11, wherein an outer height of said lower inner surface of said pillow gasket defined between a laterally outer side of a junction between said pillow gasket and said pillows and a lower rear part of said open lower front portion wall is between 20 mm and 30 mm. 13. A nasal pillow section as claimed in claim 12, wherein an inner height of said lower inner surface between an inner side of said pillows and said lower rear part of said open lower front portion wall is between 20 mm and 30 mm and less than said outer height of said lower inner surface. 14. A nasal pillow section as claimed in claim 13, wherein said inner height of said lower inner surface is between 23 mm and 25 mm. 15. A nasal pillow section as claimed in claim 11, wherein an outer height of said lower inner surface of said pillow gasket defined between a laterally outer side of said pillows and a lower rear part of said open lower front portion is between 25 mm and 27 mm. 16. A nasal pillow section as claimed in claim 15, wherein an inner height of said lower inner surface between an inner side of said pillows and said lower rear part of said open lower front portion wall is between 20 mm and 30 mm and less than said outer height of said lower inner surface. 17. A nasal pillow section as claimed in claim 16, wherein said inner height of said lower inner surface is between 23 mm and 25 mm. 18. A nasal pillow section as claimed in claim 1, wherein the wherein the nasal pillow comprise flared upper ends and a necked middle section connecting the flared upper ends with the lower ends, the lower ends extending outwardly from the necked middle portion. 19. An interface for use as part of an apparatus for providing a stream of gases to a user, said interface comprising: a manifold section having a distal end with a gases supply aperture that in use receives a stream of gases, said manifold section adapted for connection to a headgear assembly so that in use said interface is held in position on a face of said user,a nasal pillow section having a pillow manifold section with distal end connected to the manifold section and nasal pillows having lower ends connected to a proximal end of the pillow manifold section, said pillow manifold section fluidically connected to said manifold section so that said stream of gases passes through said nasal pillow section in use, said nasal pillows adapted to substantially seal against nostrils of said user in use so that substantially all of said stream of gases is delivered to said user, said nasal pillow section in use located in front of an upper lip and below nostrils of said user, a lower inner surface of said pillow manifold section being directly in front of said upper lip in use,said lower inner surface of said pillow manifold section comprises a first concave portion extending along said lower inner surface of said pillow manifold section, in a direction from said manifold section toward the nasal pillows, and extending from an area at the lower ends of the nasal pillows and to the distal end of the pillow manifold section; andan upper surface of said pillow manifold section, on an opposite side from the lower inner surface, comprising a second concave portion extending along said upper surface of said pillow manifold section, in a direction from said manifold section toward the nasal pillows, and extending from an area at the lower ends of the nasal pillows and to the distal end of the pillow manifold section. 20. An interface as claimed in claim 19, wherein said pillow manifold section further comprises an open lower front portion that acts as a gases aperture and which is fluidically connected to said manifold section, and the first concave portion of said lower inner surface of said pillow manifold section is defined between bases of said nasal pillows and a lower rear part of said open lower front portion. 21. An interface as claimed in claim 20, wherein an inwards curve of the first concave portion of said lower inner surface of said pillow manifold section results in a depth for the first concave portion such that an upper portion of said lower inner surface is positioned 3 mm forward of a lower edge of said lower inner surface. 22. An interface as claimed in claim 21, wherein said lower inner surface has a width of 40 mm. 23. An interface as claimed in claim 22, wherein an outer height of said lower inner surface of said pillow manifold section defined between a laterally outer side of a junction between said pillow manifold section and said pillows and a lower rear part of said open lower front portion wall is between 25 mm and 27 mm. 24. An interface as claimed in claim 23, wherein an inner height of said lower inner surface between an inner side of said pillows and said lower rear part of said open lower front portion wall is between 20 mm and 30 mm and less than said outer height of said lower inner surface. 25. An interface as claimed in claim 19, wherein the wherein the nasal pillow comprise flared upper ends and a necked middle section connecting the flared upper ends with the lower ends, the lower ends extending outwardly from the necked middle portion. 26. A system for providing a heated, humidified stream of gases to a user, comprising: a blower unit having a blower outlet and adapted to supply a stream of gases at a pressure above atmospheric from said blower outlet, a humidifier unit having a humidifier inlet and a humidifier outlet, said humidifier inlet fluidically connected to said blower outlet, said humidifier unit in use receiving said stream of gases and heating and humidifying said stream of gases before passing said stream of gases out of said humidifier outlet,said interface as claimed in claim 19,a supply conduit, a first end of said supply conduit fluidically connected to said humidifier outlet to receive said stream of gases, a second end of said supply conduit fluidically connected to said gases supply aperture of said interface to provide said stream of gases to said interface, anda headgear assembly, said interface and said headgear assembly mutually adapted to connect together and hold said interface in position on a head of said user in use.
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