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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0947021 (2018-04-06) |
| 등록번호 | US-10252015 (2019-04-09) |
| 우선권정보 | NZ-531332 (2004-02-23); NZ-534606 (2004-08-06) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 0 인용 특허 : 286 |
In one embodiment, a nasal cannula is shaped to fit within a user's nares, where the nasal cannula includes at least one prong allowing high flow delivery of humidified gases and creates positive airway pressure in the patient's airway. The prongs have angled ends such that, in use, gases flowing th
In one embodiment, a nasal cannula is shaped to fit within a user's nares, where the nasal cannula includes at least one prong allowing high flow delivery of humidified gases and creates positive airway pressure in the patient's airway. The prongs have angled ends such that, in use, gases flowing through the prongs are directed to the user's nasal passages. The nasal cannula body is partially swivelling and preferably has a ball joint connector. In another embodiment the nasal cannula may have at least one flared end prong that preferably seals within a patient's nare.
1. A mask assembly for delivering positive airway pressure to a user, the mask comprising: a first part comprising a hollow body, a first part inlet and first and second oval tubular members extending from the hollow body, the first part being flexible and formed as a single piece, the first and sec
1. A mask assembly for delivering positive airway pressure to a user, the mask comprising: a first part comprising a hollow body, a first part inlet and first and second oval tubular members extending from the hollow body, the first part being flexible and formed as a single piece, the first and second oval tubular members having distal ends and proximal portions spaced from the distal ends, the distal ends being connected to the hollow body and the proximal portions comprising enlarged elliptical portions configured to seal against a user's nares in use;a rigid mask body comprising a rigid mask body inlet and a rigid mask body outlet connectable to the first part inlet so as to define an enclosed space and so as to define a longitudinal direction extending from the rigid mask body inlet at a distal end of the longitudinal direction and the proximal portions of the of the first and second oval tubular members disposed at a proximal end of the longitudinal direction, the rigid mask body comprising a first headgear extension extending from a left side of the rigid mask body and including a first headgear strap connection location and a second headgear extension extending from a right side of the rigid mask body and including a second headgear strap connection location;a headgear strap comprising first and second ends, the first end connected to the first headgear extension at the first headgear strap connection location and the second end connected to the second headgear extension at the second headgear strap connection location, the headgear strap configured to maintain the first part in a position with the first and second oval tubular members against a user's nares in use;the rigid mask body further comprising an outer surface having at least a curved portion and at least a first recessed portion recessed from the curved portion of the outer surface;a bias flow vent configured to vent a gas from the enclosed space, to an outside of the rigid mask body during use, the bias flow vent comprising a least a first plurality of apertures disposed in the first recessed portion wherein the recessed portion comprises left and right side semi-oval peripheries; andan inspiratory conduit connected to the rigid mask body and configured to deliver pressurized gases into the enclosed space for inhalation by a user in use. 2. The mask assembly of claim 1, wherein the first plurality of apertures are arranged symmetrically on left and right sides of the rigid mask body. 3. A mask assembly for delivering positive airway pressure to a user, the mask comprising: a first part comprising a hollow body comprising first and second oval tubular members extending from the hollow body, the first part being flexible and formed as a single piece;a rigid mask body assembly comprising first and second headgear strap connection locations and a rigid mask body inlet and being connectable to the prong part so as to define an enclosed space with the rigid mask body inlet being disposed at a distal end of longitudinal direction of the mask assembly and proximal portions of the of the first and second oval tubular members disposed at a proximal end of the longitudinal direction, the rigid mask body assembly further comprising a curved outer surface having a recessed portion recessed from the curved outer surface;a headgear strap comprising a first end and a second end, the first end connected to the first headgear strap connection location and the second end connected to the second headgear strap connection location; anda bias flow vent configured to vent a gas from the enclosed space to an outside of the rigid mask body assembly during use, the bias flow vent comprising a first plurality of apertures disposed in the recessed portion, wherein a first portion of the first plurality of apertures is arranged in a left side semi-oval arrangement and a second portion of the first plurality of apertures is arranged in a right side semi-oval arrangement. 4. The mask assembly of claim 3, wherein the rigid mask body assembly comprises a first headgear extension extending from a left side of the rigid mask body assembly, the first headgear strap connection location being disposed on the first headgear extension, and wherein the rigid mask body assembly comprises a second headgear extension extending from a right side of the rigid mask body assembly, the second headgear strap connection location being disposed on the second headgear extension. 5. The mask assembly of claim 4, additionally comprising an inspiratory conduit connected to the rigid mask body assembly at a conduit connection location, a first portion of the first plurality of apertures being disposed between the conduit connection location and the first headgear extension, and a second portion of the plurality of apertures being disposed between the conduit connection location and the second headgear extension. 6. The mask assembly of claim 3, wherein the recessed portion is curved. 7. The mask assembly of claim 3, wherein the rigid mask body assembly comprises left and right side semi-oval peripheries surrounding the recessed portion. 8. The mask assembly of claim 7, wherein the left and right side semi-oval peripheries have rounded profiles. 9. The mask assembly of claim 3, wherein the headgear strap comprises a tube configured to maintain the first part in a position with the first and second nasal prongs against a user's nares in use. 10. The mask assembly of claim 3, wherein the first plurality of apertures is disposed between the first and second headgear strap connection locations. 11. A mask assembly for delivering positive airway pressure to a user, the mask comprising: a first part comprising a hollow body and first and second oval tubular members extending from the hollow body, the first part being flexible and formed as a single piece;a rigid mask body assembly comprising first and second headgear strap connection locations and a rigid mask body inlet and being connectable to the prong part so as to define an enclosed space and with the rigid mask body inlet being disposed at a distal end of longitudinal direction of the mask assembly and the first and second oval tubular members disposed at a proximal end of the longitudinal direction;the rigid mask body assembly further comprising a curved outer surface, the curved outer surface comprising a first recessed portion;a bias flow vent configured to vent a gas from the enclosed space, to an outside of the rigid mask body assembly during use, the bias flow vent comprising at least a first plurality of apertures disposed in the recessed portion wherein the first recessed portion is disposed on a left side of the rigid mask body assembly and wherein the first recessed surface portion comprises a semi-oval shape; anda headgear strap comprising a first end and a second end, the first end connected to the first headgear strap connection location and the second end connected to the second headgear strap connection location. 12. The mask assembly of claim 11, wherein the first recessed portion is disposed on a left side of the rigid mask body assembly. 13. The mask assembly of claim 12, wherein the curved outer surface comprises a second recessed surface portion disposed on a right side of the rigid mask body assembly, the rigid mask body assembly further comprising a second plurality of apertures disposed in the second recessed surface portion. 14. The mask assembly of claim 13, wherein the first and second recessed surface portions are curved. 15. The mask assembly of claim 13, wherein the first and second recessed surface portions form a single oval shaped recess on the curved outer surface. 16. The mask assembly of claim 11, wherein the first plurality of apertures is disposed between the first and second headgear strap connection locations.
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