A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle as
A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.
대표청구항▼
1. A nasal assembly for providing a supply of air at positive pressure to the entrance of a patient's airways for nasal continuous positive airway pressure treatment of sleep disordered breathing comprising: (i) an air delivery conduit arranged in use to receive a supply of air at positive pressure;
1. A nasal assembly for providing a supply of air at positive pressure to the entrance of a patient's airways for nasal continuous positive airway pressure treatment of sleep disordered breathing comprising: (i) an air delivery conduit arranged in use to receive a supply of air at positive pressure;(ii) a rigid or semi-rigid frame defining a structure to which the air delivery conduit is connected;(iii) an headgear assembly to hold the frame in position on the face of a patient;(iv) a nozzle assembly connected to the frame, the nozzle assembly comprising a pair of nozzles and a base portion,the base portion constructed from a deformable material having side walls forming a resilient spring structure providing a component of force on a patient's face through the nozzles and a resiliently deformable central wall portion from which the pair of nozzles extend;a pair of nozzles having a cone-shaped portion with a portion that seals on the underside of the nostrils in an area about the rim of the nostril openings and another portion that enters into the nasal passage of the patient's nose in use;each cone-shaped portion is connected to the base portion via a reduced diameter first portion and arranged so that the nozzles are in communication with respective outlet openings provided in the central wall. 2. The nasal assembly of claim 1, wherein the base portion is structured to provide a component of force to the patient's face and the nozzles are structured to provide a component of force to the patient's face. 3. The nasal assembly of claim 1 wherein the base portion is constructed to apply a relatively small component of force on the patient's face and the nozzles have a structure such that they provide a relatively large component of force on the patient's face. 4. The nasal assembly of claim 1, wherein the respective first portions of the nozzles defines a neck region. 5. The nasal assembly of claim 1, wherein the respective first portions of the nozzles act as a spring structure to provide a component of force on the patient's face through the nozzles. 6. The nozzle assembly of claim 1, structured such that the nozzles are spring loaded to apply a sufficient component of force for sealing. 7. The nasal assembly of claim 1, wherein the side-walls of the base portion have a relatively thick cross-section in comparison with the thickness of the nozzles. 8. The nasal assembly of claim 1, wherein the base portion is not substantially inflatable or expandable when pressurised by a breathing gas. 9. The nasal assembly of claim 1, wherein the base portion is structured to inflate so that upon an increase in the pressure of air in the chamber the force applied to the underside of the nasal passages is increased through the base portion via the nozzles. 10. The nasal assembly of claim 1, wherein the headgear provides a headgear tension. 11. The nasal assembly of claim 10, wherein the base portion directs headgear tension at least in part to the nozzles to hold them in place. 12. The nasal assembly of claim 10, further comprising a lower contour portion, wherein the lower contour portion is structured to direct a portion of headgear tension to the face. 13. The nasal assembly of claim 1, wherein the respective first portions of the nozzles has a reduced cross-section portion structured to allow the nozzles to move relative to a base portion for accommodation of variations in patient facial features. 14. The nasal assembly of claim 1, wherein the nozzles are moulded in one piece with the base portion. 15. The nasal assembly of claim 1, wherein the respective first portions of the nozzles defines a single concave region between the second portion and the central wall portion. 16. The nasal assembly of claim 1, wherein the central portion is structured to align the nozzles at an angle with respect to one another. 17. The nasal assembly of claim 16, wherein the angle is in the range of about 135-155 degrees. 18. The nasal assembly of claim 16, wherein the angle is in the range of about 70-90 degrees. 19. The nasal assembly of claim 1, wherein the nozzles include a generally elliptical orifice. 20. The nasal assembly of claim 19, wherein the generally elliptical orifice has an ellipse ratio of about 0.7. 21. The nasal assembly of claim 1, wherein the nozzle assembly is removably attachable to the frame via a friction or interference fit. 22. The nasal assembly of claim 1, wherein the nozzle assembly is removably attachable to the frame via a tongue and groove arrangement. 23. The nasal assembly of claim 1, wherein the nozzles are contoured to match the interior anatomical profile of the patient's nose. 24. The nasal assembly of claim 1, further including a lower contour portion. 25. The nasal assembly of claim 24, wherein the lower contour portion is rigid. 26. The nasal assembly of claim 24, wherein the lower contour portion is elastic. 27. The nasal assembly of claim 1, wherein the headgear assembly includes two side portions with a rear portion connecting the side portions, the two side portions including a stiffener to add rigidity to the headgear assembly. 28. The nasal assembly of claim 27, wherein the rear portion includes upper straps that pass over the top of the patient's head and rear straps that pass around the rear portion of the patient's head. 29. The nasal assembly of claim 28, wherein the upper straps are coupled to one another by a headgear buckle structured to allow symmetrical adjustment of the headgear assembly. 30. The nasal assembly of claim 27, wherein at least one side portion includes a layer of a soft, flexible material located on an inside surface of a stiffener positioned against the skin in use. 31. The nasal assembly of claim 30 wherein both side portions include the layer of soft, flexible material. 32. The nasal assembly of claim 1, further comprising an air delivery conduit anchoring system. 33. The nasal assembly of claim 32, wherein the air delivery conduit anchoring system comprises a loop of hook and loop material to fasten the tube to the headgear assembly. 34. A nasal pillows mask assembly for providing a supply of air at positive pressure to the entrance of a patient's airways, the nasal pillows mask assembly comprising: (i) a nasal pillows assembly defining a chamber comprising: a pair of nasal pillows including: a first portion of reduced cross-section connected at a first end to a base portion and structured to allow for relative movement with respect to the base portion, and to be pre-loaded against the patient's nostril;a second portion connected to a second end of the first portion, the second portion having a narrower first end that enters the nasal passage of the patient's nose in use and a wider second end, the second portion defining a surface upon at least a portion of which sealing occurs with a patient's nares on the underside of the nostrils in an area about the rim of the nostril openings in use;and a base portion constructed of a deformable, resilient and flexible material including sidewalls having a generally thicker end adapted for connection to a frame and decreasing in thickness to a thinner central portion, the sidewalls being arranged to act as a spring structure to provide a component of force on the patient's face through the nasal pillows;(ii) a frame to which the nasal pillows assembly is connected;(iii) headgear assembly connected to the frame and structured to retain the frame in position on the face of a patient; and(iv) an air delivery conduit adapted to receive a supply of air at positive pressure and direct it to the chamber. 35. The nasal pillows mask assembly of claim 34, wherein the base portion is structured to provide a decoupling joint between the frame and the pair of nasal pillows. 36. The nasal pillows mask assembly of claim 34, wherein the base portion is not substantially inflatable or expandable when pressurised by a gas. 37. The nasal pillows mask assembly of claim 34, wherein the base portion and nasal pillows together provide a force to provide a seal between the nasal pillows assembly and the patient's nasal passages. 38. The nasal pillows mask assembly of claim 37, wherein the nasal pillows provide a relatively large component of force on the patient's face and the base portion provides a relatively small component of force on the patient's face. 39. The nasal pillows mask assembly of claim 37, wherein the nasal pillows provide a relatively small component of force on the patient's face and the base portion provides a relatively large component of force on the patient's face. 40. The nasal pillows mask assembly of claim 34, further comprising a surface portion structured to contact the patient's upper lip region to help maintain the nasal pillows assembly in position on the patient's face. 41. The nasal pillows mask assembly of claim 34, wherein the headgear assembly is structured such that stability forces applied by the headgear assembly are distributed to the back of the patient's head, the patient's cheeks and the patient's upper lip to maintain the nasal pillows assembly in the patient's face in use. 42. The nasal pillows mask assembly of claim 34, further comprising a pair of side portions with a rear portion connecting the side portions, the pair of side portions including a stiffener to add rigidity to the headgear assembly. 43. The nasal pillows mask assembly of claim 42, wherein the rear portion includes upper straps that pass over the top of the patient's head and rear straps that pass around the rear portion of the patient's head. 44. The nasal pillows mask assembly of claim 43, wherein the upper straps are coupled to one another by a headgear buckle structured to allow symmetrical adjustment of the headgear assembly. 45. The nasal pillows mask assembly of claim 42, wherein at least one side portion includes a layer of a soft, flexible material located on an inside surface of a stiffener positioned against the skin in use. 46. The nasal pillows mask assembly of claim 45, wherein both side portions include the layer of soft, flexible material. 47. The nasal pillows mask assembly of claim 34, wherein the nasal pillows are moulded in one piece with the base portion. 48. The nasal pillows mask assembly of claim 34, wherein the nasal pillows assembly is removably attachable to the frame via a friction or interference fit. 49. The nasal pillows mask assembly of claim 34, wherein the nasal pillows assembly is removably attachable to the frame via a tongue and groove arrangement. 50. The nasal pillows mask assembly of claim 34, wherein at least one side portion includes an opening through which a strap of the headgear may pass and be removable connected. 51. The nasal pillows mask assembly of claim 34, wherein the nasal pillows and the base portion are moulded in one piece. 52. The nasal pillows mask assembly of claim 34, further comprising an air delivery conduit anchoring system. 53. The nasal pillows mask assembly of claim 52, wherein the air delivery conduit anchoring system comprises a loop of hook and loop material to fasten the tube to the headgear assembly. 54. A nasal assembly for providing a supply of air at positive pressure to the entrance of a patient's airways for nasal continuous positive airway pressure treatment of sleep disordered breathing comprising: (i) an air delivery conduit to receive a supply of air at positive pressure;(ii) a rigid or semi-rigid frame to which the air delivery conduit is connected;(iii) headgear to hold the frame in position on the face of a patient and to provide a headgear tension;(iv) a nozzle structure connected to the frame, the nozzle structure comprising:a pair of nozzles having a first portion arranged to form a spring structure and a cone-shaped portion part of which is arranged to form a seal on the underside of the nostrils in an area about the rim of the nostril openings and another part of which is arranged to enter into the nasal passage of the patient's nose in use; anda deformable base portion,the base portion having a central wall portion to which the pair of nozzles are connected, and side wall portions;the base portion being structured to form a decoupling joint between the frame and the nozzles to provide relative movement between the nasal assembly and the users face,the base portion further comprising a lower contour portion adapted to transfer a portion of the headgear tension to the face in use. 55. The nasal assembly of claim 54, wherein the lower contour portion of the base portion is structured to contact the patient's upper lip to help maintain the nasal assembly in position on the patient's face in use. 56. The nasal assembly of claim 54, wherein the lower contour portion generally matches the contour of the face. 57. The nasal assembly of claim 54, wherein the headgear tension forces are transferred to the face via the nozzles as well as the lower contour portion. 58. The nasal assembly of claim 54, wherein the headgear comprises a pair of side portions and a rear portion connecting the side portions. 59. The nasal assembly of claim 58, wherein the side portions include a stiffener to add rigidity to the nasal assembly. 60. The nasal assembly of claim 58, wherein the rear portion includes upper straps structured to pass over the top of the patient's head and rear straps structured to pass around the rear portion of the patient's head. 61. The nasal assembly of claim 60, wherein the rear straps are structured to pull the frame back onto the patient's face on the top lip of the patient. 62. The nasal assembly of claim 60, wherein the rear portion further includes a rear strap buckle structured to allow symmetrical adjustment of the rear straps. 63. The nasal assembly of claim 54, wherein the nozzles and base portion are moulded in one piece. 64. The nasal assembly of claim 54, wherein the base portion is removably attachable to the frame. 65. The nasal assembly of claim 54, wherein the lower contour portion is structured to spread the load of a headgear tension over an increased area. 66. The nasal assembly of claim 54, wherein the lower contour portion has a lip-contacting area generally similar to the seal-forming cone-shaped portion of the nozzles. 67. The nasal assembly of claim 54, wherein the lower contour portion has a face-contacting area larger than the seal-forming cone shaped portion of the nozzles. 68. The nasal assembly of claim 54, structured so that a nose reaction force resulting from contact between the seal-forming cone-shaped portion of the nozzles has an approximately similar magnitude to a lip reaction force resulting from contact between the lower contour portion of the base portion and the top lip of the patient. 69. The nasal assembly of claim 54, wherein the lower contour portion is constructed and arranged to distribute the load of the headgear tension to the maxilla to increase comfort. 70. The nasal assembly of claim 54, wherein the lower contour portion is positioned adjacent the central wall portion. 71. A nasal interface for delivering pressurized breathable gas to a user, comprising: a support frame;a silicone nozzle structure including a base portion and a pair of nozzles, the nozzle structure being removably coupled to the support frame with the pair of nozzles structured to sealingly engage with nasal passages of a user's nose in use; anda headgear to support the support frame and nozzle structure on the user's face,wherein a front wall of the base portion is configured to contact an immediate underside of the user's nose, whereby a resultant force is directed along a line extending from the immediate underside to a rear portion of the user's head, between the eye and the ear of the user in use. 72. The nasal interface according to claim 71, wherein the nozzle structure is rotatable relative to the headgear for an infinite amount of settings to align the nozzles with respect to the nasal passages of the user. 73. The nasal interface according to claim 71, wherein the support frame and nozzle structure are designed to substantially isolate relatively higher support forces from relatively lower sealing forces. 74. The nasal interface according to claim 71, wherein the support frame has a central portion and a pair of lateral support arms extending laterally away from the central portion, each lateral support arm including an integrally formed connector slot. 75. The nasal interface according to claim 71, further comprising an inlet tube having a first end provided with a swivel connector to be connected to a source of pressurized gas via an air delivery tube, and a second end provided to deliver the gas into the support frame for breathing by the user via the nozzle structure. 76. The nasal interface according to claim 71, wherein the headgear includes a back strap to pass around the rear portion of the user's head, a top strap to pass over the top of the user's head, and a pair of depending side straps each of which extends from a junction between the back and top straps, said depending side straps being configured to extend forwardly of the ear along the user's face, each of said depending side straps having an end received in a respective connector slot of said support frame. 77. The nasal interface according to claim 71, wherein the base of the nozzle structure is stretched over the support frame during assembly. 78. The nasal interface according to claim 77, wherein the base portion includes opposed side walls that interlock with respective lateral side walls of the support frame. 79. The nasal interface according to claim 78, wherein the side walls of the base portion include a recess to receive a respective rib provided on the lateral side walls of the support frame.
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이 특허에 인용된 특허 (100)
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