In one embodiment, a nasal cannula is shaped to fit within a user's nares, 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 dir
In one embodiment, a nasal cannula is shaped to fit within a user's nares, 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.
대표청구항▼
1. A breathing assistance apparatus comprising: a nasal cannula adapted to deliver humidified gases to a user, said nasal cannula comprising: a tubular body having a first end and a second end, at least one prong extending from the first end of the tubular body and shaped to fit within the user's na
1. A breathing assistance apparatus comprising: a nasal cannula adapted to deliver humidified gases to a user, said nasal cannula comprising: a tubular body having a first end and a second end, at least one prong extending from the first end of the tubular body and shaped to fit within the user's nare, the second end comprising a partial spherical shaped socket;a connector having a first end and a second end, the first end of the connector comprising a partial spherical shaped ball received in the socket of the tubular body and the second end of the connector being configured to be connected to a conduit configured to supply the gases to the cannula; andat least one of the ball and socket comprising at least two discrete channels positioned along an interface between the ball and socket such that the channel is configured to externally vent gases, wherein the at least two discrete channels are separated from each other along an entire length of the at least two discrete channels. 2. A breathing assistance apparatus according to claim 1 wherein said nasal cannula includes arms or loop to attach a head strap to said cannula. 3. A breathing assistance apparatus according to claim 2 wherein said head strap is a small flexible tube. 4. A breathing assistance apparatus according to claim 1 wherein said at least one prong includes a flange near or about its end. 5. A breathing assistance apparatus according to claim 4 wherein said flange causes the sealing of said at least one prong in at least one nare of said user in use. 6. A breathing assistance apparatus according to claim 5 wherein said flange is a thin flexible extension that extends substantially completely around the circumference of said at least one prong. 7. A breathing assistance apparatus according to claim 4 wherein said flange is a thin flexible extension that extends substantially completely around the circumference of said at least one prong. 8. A breathing assistance apparatus according to claim 4 wherein said flange is elliptical in shape, and wherein a first portion of said flange extends further from said at least one prong than a second portion of said flange. 9. A breathing assistance apparatus according to claim 1 wherein said at least one prong is two prongs that are angled toward one another and are oval in shape such that they substantially follow the shape and contour of human nares. 10. A breathing assistance apparatus according to claim 1 wherein said at least one prong includes a flange, recessed area and shaped end where the recessed area is disposed between said flange and said shaped end and in use said flange extends into and seals within a user's nares. 11. A breathing assistance apparatus according to claim 10 wherein said shaped end comprises a wall thickness that becomes progressively thinner towards the shaped end's tip. 12. A breathing assistance apparatus according to claim 11 wherein said nasal cannula has two nasal prongs. 13. A breathing assistance apparatus according to claim 12 wherein said prongs are oval and shaped to follow the contours of human nares. 14. A breathing assistance apparatus according to claim 12 wherein said prongs are angled toward one another to prevent dislodgement from said user's nares and assist in flow of gases into the user's nasal passages. 15. A breathing assistance apparatus according to claim 12 wherein said prongs each have a step formed in them such that in use the sides of said prongs abut the user's nasal septum so as to prevent said prongs from dislodging from said user's nares. 16. A breathing assistance apparatus according to claim 15 wherein each of said prongs include a protrusion formed opposite said step that assists in correct orientation of said prongs within said user's nares. 17. A breathing assistance apparatus according to claim 1 wherein said tubular body comprises a plurality of apertures configured to externally vent the gases exhaled by the user through the user's nare. 18. A breathing assistance apparatus according to claim 1 further comprising a humidifier adapted to, in use, be in fluid communication with a source of gases and said conduit and adapted to, in use, humidify said gases. 19. A breathing assistance apparatus according to claim 1, further comprising a plurality of apertures configured to externally vent gases exhaled by the user through the user's nare. 20. A breathing assistance apparatus according to claim 1, wherein the channel is formed in the socket. 21. A breathing assistance apparatus according to claim 1, wherein the at least two discrete channels are positioned along the interface between the ball and socket and are formed on an inner surface of a socket portion of the ball and socket such that the at least two discrete channels are fully contained within the socket portion. 22. A breathing assistance apparatus comprising: a nasal cannula adapted to deliver gases to a user, said nasal cannula defining a longitudinal axis along its length;said nasal cannula comprising at least one prong shaped to fit within a user's nare; anda connector configured to couple the nasal cannula to a gas supply conduit, the connector comprising a partial spherical shaped ball coupled to a complementary socket of the cannula, at least one of the ball and socket comprising at least two discrete channels extending generally in the direction of the longitudinal axis and being configured to allow gases to leak from the cannula and act as a bias flow outlet, wherein the at least two discrete channels are separated from each other along an entire length of the at least two discrete channels;said at least one prong comprising a first portion extending substantially parallel to the nasal cannula's longitudinal axis to a transition point where the at least one prong is configured to enter the user's nare, and a second portion configured to extend inside the user's nare from the transition point at an angle with respect to the nasal cannula's longitudinal axis,said at least one prong further comprising an opening formed within the second portion, such that in use, gases flowing through said at least one prong are directed to said user's nasal passages. 23. A breathing assistance apparatus according to claim 22 wherein said at least one prong includes a flange disposed about an outer circumference of the at least one prong at the transition point. 24. A breathing assistance according to claim 23 wherein said flange is configured to rest against the outside of the user's nare and seal the nare. 25. A breathing assistance apparatus comprising: a nasal cannula adapted to deliver humidified gases to a user, said nasal cannula comprising: a hollow body having a first end and a second end, the second end comprising a socket having a concave surface;a prong part coupled to the first end of the body and comprising at least one prong shaped to fit within the user's nare;a connector comprising a ball having a convex surface and coupled to the socket, the connector configured to be coupled to a gas supply conduit; andat least two discrete channels on at least one of the concave and convex surfaces to define an air flow path between the surfaces, wherein the at least two discrete channels are separated from each other along an entire length of the at least two discrete channels. 26. A breathing assistance apparatus configured to deliver gases to a user, comprising: a hollow body defining a gas flow path, said gas flow path being configured to deliver gases to the user, the hollow body defining a longitudinal axis along its length and comprising a partial spherical shaped socket; anda connector configured to couple the hollow body to a gas supply conduit, the connector comprising a partial spherical shaped ball coupled to the socket of the hollow body;at least one of the ball and socket comprising at least two discrete channels positioned along an interface between the ball and socket such that the at least two discrete channels are configured to externally vent gases, wherein the at least two discrete channels extend generally in the direction of the longitudinal axis and are separated from each other along an entire length of the at least two discrete channels.
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이 특허에 인용된 특허 (26)
Dickerman Stair (10065 NE. Roberts Rd. Bainbridge Island WA 98110) Dickerman JoAnn A. (10065 NE. Roberts Rd. Bainbridge Island WA 98110), Breathing gas delivery system and holding clip member therefor.
Sullivan Colin E. (Sidney AUX) Lynch Christopher (Sidney AUX), Device and method for monitoring breathing during sleep, control of CPAP treatment, and preventing of apnea.
Sanders Mark H. (Pittsburgh PA) Zdrojkowski Ronald J. (Pittsburgh PA), Method and apparatus for maintaining airway patency to treat sleep apnea and other disorders.
Trimble Russell L. (Overland Park KS) Dolida Roger J. (Kingwood TX) Rose Frederick R. (Overland Park KS) Metzler Philip M. (Overland Park KS), Nasal puff with adjustable sealing means.
McAuley, Alastair Edwin; Nightingale, Christopher Earl; Gradon, Lewis George; Haycock, Mark Joseph; Smith, Nicholas Charles Alan; Mahon, Daniel; Cresswell, Fiona Elizabeth, Breathing assistance apparatus.
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