|Publication number||US3682171 A|
|Publication date||Aug 8, 1972|
|Filing date||Mar 31, 1971|
|Priority date||Mar 31, 1971|
|Publication number||US 3682171 A, US 3682171A, US-A-3682171, US3682171 A, US3682171A|
|Inventors||Dali Carmelo P, Szempruch Walter T|
|Original Assignee||Baxter Laboratories Inc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (121), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent Dali et al.
[S4] NASAL CANNULA'  Inventors: Carmelo P. Dali, Niles; Walter T.
Szempruch, Chicago, both of III.  Assignee: Baxter Laboratories, Inc., Morton Grave, Ill.
 Filed: March 31,1971
1211 Appl. No.: 129,726
52 us. Cl ....l28/206 [511 Int. Cl. ..A6lm 15/08  Field of Search 128/206, 348, 140 N, 140 R,
l28/l45 R, 142-1427, l98-200'  References Cited UNITED STATES PATENTS 3,046,989 7/1962 Hill .Q ..l28/348 2,663,297 12/1953 Tumberg ..l28/20 2,168,705 8/1939 Francisco eta]. ..l28/206 [451 Aug. 8, 1972 FOREIGN PATENTS OR APPLICATIONS 1,124,404 7/1956 France 128/206 398,989 7/1924 Germany... 128/198 244,733. 2/1926 Italy I 28/1 98 Primary ExaminerRichard A. Gaudct Assistant Examiner-J. B. Mitchell Attorney-W. Garrettson Ellis  ABSTRACT Nasal cannula device molded of a soft, flexible maten' al includes a-tubularmember which supports a pair of integral cannula'extensions. Openings at each end of the tubular member provide alternative connection points for an oxygen supply tube. An arch-like nose bridge engageable band member integrally attached to the tubular member outwardly of the cannula extensions has a layer of adhesive on its under surface for anchoring the cannula tothe patients nose.
12 Claims, 4 Drawing ligures Patented Aug. 8, 1972 MW m mm. W 2 1/ TM ww W NASAL CANNULA BACKGROUND OF THE INVENTION This invention relates to a nasal cannula device for delivering oxygen to a patient over a relatively long period of time. p
There are many devices for carrying oxygen into the nostrils of a patient which are shown inthe prior art. Although each of these prior art devices performs the function of delivering oxygen to a patient, it does so with some degree of discomfort to the patient. Most of the prior art devices rely on the use of elastic bands encircling the wearers head to provide the support necessary for maintaining the cannula extensions in position within the wearers nostrils. Others utilize the oxygen supply tubing as a support, sometimes by having a length of tubing extending from each end of the carmula with the two lengths of tubing being adjustably fastened to each other at a point behind the wearers head. More often, the latter type of device is anchored by looping the lengths of tubing over the wearers ears and fastening them together under his chin. When such prior art devices are worn for an extended period of time, they generally chafe and irritate the'wearers skin as he moves his head. They also are uncomfortable and often interfere with the wearers sleep since they press into his flesh as he moves his head on his pillow. U.S. Pat. Nos. 2,735,432, 2,831,487, 2,868,199, 2,931,358 and 3,513,844 are illustrative of the aforementioned types ofdevices.
In US. Pat. No. 3,046,989, a flat ductile metal member is shown which has an adhesive coating on one side and includes a pair of integral tabs which are adapted to encircle a non-integral single .nasal tube. The metal member is adhered to a patients nose and deformed into conforming shapeafter a nasal tube has been placed into the patients nostril. The tabs are then bent around the nasal tube to anchor it. Being made of flat metal, the member would be rather diflicult ,to con form to the shape of the wearers nose so as to achieve good contact with most of the adhesive. In addition, the metal, being a good conductor, would probably feel uncomfortably cold to the wearer when it was initially fastened to him.
' SUMMARY It is an object of this invention to provide a nasal cannula device which is effective for its purpose and more comfortable to the patient than previously known devices while yet being relatively simple and economical to manufacture.
' It is a further object of this invention to provide a nasal cannula which may be attached to a source of oxygen located on either side of a patients bed without having the supply tube pass over the patients body.
It is another object of the invention to provide a nasal cannula which is shaped so that a single size can be worn comfortably by the vast majority of potential users.
These and other objects are obtained by the present invention wherein a nasal cannula is formed, preferably by injection molding, from a soft plastic material such as vinyl or plastisol or from silicone rubber. Since the cannula is adapted to be adhesively fastened to the wearers nose, it is within his field of view. Thus, the
: tient quickly becomes used to it and forgets he is wearing it. To the initial distraction, the cannula can, be molded of a generally clear material which is frosted to reduce glare.
The cannula device basically comprises as open ended curved. cannula member which has a pair of spaced integral cannula extensions extending generally radially upwardly from its central region. The cannula extensions are formed generally parallel to the transverse midline of an arched nose bridge engageable band which is integrally connected to the cannula tube near its ends. The cannula extensions are preferably slightly flared at their outer ends. The flaring causes a slight reduction in the velocity of the oxygen as it enters the wearers nostrils and therefore minimizes the possibility of damage to the mucosa. It has been found that by making the cannula so that the arched band has a width along its transverse midline where it engages the bridge of the nose of about 22 millimeters, the cannula can be comfortably and effectively worn by the vast majority of potential users, even though the sizes and shapes of the noses of the persons in this group vary widely. Preferably, the cannula device is attached to the bridge of the wearers nose so that the center of the cannula member either touches or is very close to the web separating the wearers nostrils. For most of these users, the cannula member will be supported by the nose contacting band so as to be spaced slightly from the wearers lip rather than resting upon it. For small children, a scaled down version of the device may be used. The adhesive used to attach the device to the patient should be hypo-allergenic and may be either coated onto the underside of the arched band portion or applied to it in the form of a double-faced pressure sensitive tape. In either of these forms, the adhesive surface which is to be attached to the patient should be protected with an easily removed protective covering such as plastic coated paper which has little affinity for the adhesive. Rather than manufacture the cannula with the adhesive on it, it would also be possible to apply a piece of double faced tape to either the cannula or the patient atthe time the cannula is fitted to the patient. Although the cannula member preferably is open at each end so that the oxygen supply tubing can be attached from either end, depending on the location of the patient relative to the oxygen supply, it would of course be possible to mold the cannula with one closed end to avoid the necessity of placing a plug in the end which is not connected to the oxygen supply.
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of a preferred embodiment thereof, as illustrated in the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing the cannula of the present invention in exploded relationship with a sealing plug and oxygen supply tube;
FIG. 2 is a side view of the cannula with the oxygen supply tubing removed showing its position relative to a diagrammatic representation of the nasal passages of a human patient; 7
FIG. 3 is a front view of the cannula with a portion cannula, like the frames of a new pair of glasses, can be thereof shown in section; and
FIG. 4 is a cross-sectional view taken on the line 4- 4 of FIG. 3.
of hollow cannula extension members 18, 20 extend at 10, which is preferably injection molded of a soft flexible plastic or rubber-lilce material, comprises an elongated cannula member 12 which has an opening or passageway 14 extending throughout its length. A pairradially outwardly from the central region 22 of the a cannula member 12. Preferably, the internal diameter of the cannula extensions 18, 20 is greater at the free ends thereof, as shown inFIG; 3, in orderto lower the velocity of and slightly diffuse the oxygen delivered by the extensions, so that the oxygen will impinge only lightly upon the mucosa in the nostrils of a patient wearing the cannula. The elongated opening or passageway 14 may be attached to an oxygen supply 7 tube 26 at one of its ends and may be closed ofl by a plug member 28'at its other end. The end which is to be attached to the oxygen supply tubing 26 is determined by the location of the source of oxygen relative to'the location of the patient. Generally, it is desirable that the tubing 26 be connected to the end of the cannula cannula devices wherein the tubing is non-removably affixed to one end of the cannula.
Attached to the cannula member 12 at opposite end regions 32, 34 thereof is a thin (approximately 2mm thick) arch-like band portion indicated generally at 38 which includes a pair of leg portions 40, 42 which are connected to eachother by a generally U-shaped portion 44 which is formed so as to closely approximate which approximates the contours of a wearers face and nose. To anchor the U-shaped portion 44 to a wearers nose, a layer of adhesive 48 is provided. The adhesive 48 is normally protected by a lightly adhering plastic or paper layer 50 which may be readily removed when the cannula is to be used. In use, the cannula extensions 18,
20 are placed into the nostrils N of a patient P as shown in FIG. 2 so that the cannula member 12 touches or comesclose to the lower portion of the patients nose.- The U-shaped-portion 44 is then pressed against'the this position, the cannula extensions 18, 20 cannot be unintentionally displaced from the nostrils N. However,
, the flexible nature of the cannula member 12 and legs 40, 42 permits the extensions 18, 20 to be intentionally pulled out of the nostrils N and the cannula member 12 left torest comfortably on the tip of the nose without unfastening the adhesive 48 from the nose. Thus, the
permit the device to accommodate to a large range of patient can blow his nose or permit it to be examined without rendering the adhesive' ineffective; In order to nose shapes and sizes, the U-shaped portion 44 should have a width as measured on the line 0-1: in FIG. 3 which is great enough to provide a sufficient surface to achieve a good adhesive bond to thenose and small enough that it will not extend upwardly past the bridge of the nose on a small-nosed patient. It is also preferable that the U-shaped portion not cover the tip of the nose. It has been found that a dimension a-b of a size greater than the diameter of the cannula extension 18 and less than the distance 0-0 from the cannula member 12 to the uppermost part of the U-shaped portion 44 will provide satisfactory results although it is preferable that the dimension a b be about one half of. i or slightly less than one half of the distance a-c. Line a-bdefines a midline of U-shaped, or arch-like, portion 44 in a direction transverse to the length of portion 44.
That which is claimed is:
l; A nasal oxygen cannula formed of soft flexible material and comprising an elongated cannula member, a pair 'of nasal cannula extension portions integral with and extending generally radially outwardly from a central region of said cannula member, said pair of nasal carmula being in flow communication with said elongated cannula member, an arch-like portion adapted to extend acrossthe bridge of the nose of a user integrally joined at its ends to regions of said cannula member which are spaced away from said central region and toward the respective ends of said cannula member, said arch-like portion extending from said cannula member in generally the same direction as said nasal-cannula extension portions and having a width along a midline of the arch in a direction which is transverse to the length of the arch which is greater than the diameter of one of the cannula extension portions and less than the spacing along said midline between the cannula member and the remotestpoint of said archlike portion, means on said arch-like portion for attaching same to the nose of a user, and at leastone opening in said cannula member for connecting said cannula to a source of oxygen.
2. The nasal oxygen cannula of claim 1 wherein said arch-like portion has a width considerably greater than its thickness and a generally smooth undersurface.
3. The nasal oxygen cannula of claim 2 wherein said means for attaching includes a portion of said undersurface covered by a layer of adhesive.
4. The nasal oxygen cannula of claim 3 wherein said adhesive is of the pressure sensitive type and is pro- 'tect'ed before use by a layer of easily removed, lightly nose so as to cause the adhesive 48 to adhere firmly. In
5. The nasal oxygen cannula of claim 1 wherein said cannula member has openings at each of its ends adapted to receive either a length of oxygen supply tubing or a sealing plug.
6. The nasal oxygen cannula of claim 1 wherein the ends of the cannula extensions which are remote from the cannula member have a greater internal diameter than the remainder of the cannula extensions. if 7. The nasal oxygen cannula of claim 1 wherein the I cannula extensions have their axes generally parallel to the transverse midline of the arch-like portion. 8. The nasal oxygen cannula of claim 1 wherein said cannula member is curved.
9. The nasal oxygen cannula of claim 1 wherein the width along the midline of said arch-like portion is ap- 11. The nasal oxygen cannula of claim 9 wherein said arch-like portion has a width considerably greaterthan its thickness, is smooth on its undersurface, and is covered over a portion of said undersurface by a layer of pressure. sensitive adhesive.
12. The nasal oxygen cannula of claim 11 wherein said cannula is injection molded of a soft vinyl plastic.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2168705 *||Oct 29, 1938||Aug 8, 1939||Henry Francisco Charles||Nasal inhaler|
|US2663297 *||Jan 19, 1953||Dec 22, 1953||Harold G Belasco||Nasal adapter for oxygen inhalation|
|US3046989 *||Sep 29, 1960||Jul 31, 1962||Edward J Hill||Means for holding nasal tubes in position|
|DE398989C *||Oct 13, 1923||Jul 28, 1924||Theodor Sporrer||Respirator|
|FR1124404A *||Title not available|
|IT244733A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4151843 *||Nov 14, 1977||May 1, 1979||Brekke John H||Apparatus for administration of a gas to a human and the exhausting thereof|
|US4216769 *||Sep 29, 1978||Aug 12, 1980||Grimes Jerry L||Bi-flow nasal cup|
|US4354488 *||Nov 24, 1980||Oct 19, 1982||Dow Corning Corporation||Nose mask gas delivery device|
|US4559941 *||Dec 22, 1983||Dec 24, 1985||Timmons John W||Eyeglass frame and nasal cannula assembly|
|US5558089 *||Dec 27, 1995||Sep 24, 1996||Minnesota Mining And Manufacturing Company||Respirator nose clip|
|US5740799 *||Dec 21, 1994||Apr 21, 1998||Maersk Medical A/S||Device for the supply of oxygen and/or other gases to a patient|
|US6093169 *||May 8, 1997||Jul 25, 2000||Cardoso; Norman||Nasal oxygen catheter|
|US6328038||Jul 14, 1998||Dec 11, 2001||Fred Bruce Kessler||Nasal cannula retainer|
|US6669712||Nov 27, 2001||Dec 30, 2003||Norman Cardoso||Nasal oxygen cannula with supply tube management|
|US6986353||Jan 3, 2004||Jan 17, 2006||Medical Device Group, Inc.||Divided nasal cannula assembly|
|US7156097||Sep 10, 2003||Jan 2, 2007||Norman Cardoso||Nasal cannula|
|US7493902 *||May 27, 2004||Feb 24, 2009||Fisher & Paykel Healthcare Limited||Breathing assistance apparatus|
|US7856981 *||Nov 12, 2002||Dec 28, 2010||Fisher & Paykel Healthcare Limited||Nasal positive pressure device|
|US7874293 *||Feb 20, 2004||Jan 25, 2011||Resmed Limited||Nasal assembly|
|US7900635||Mar 8, 2011||Resmed Limited||Nasal assembly|
|US7942148||Dec 24, 2004||May 17, 2011||Resmed Limited||Compact oronasal patient interface|
|US7958893||Jun 14, 2011||Resmed Limited||Cushion for a respiratory mask assembly|
|US8042546||Dec 20, 2007||Oct 25, 2011||Resmed Limited||Nasal assembly|
|US8092478 *||Jan 10, 2012||Robert Kotler||Device and method for maintaining unobstructed nasal passageways after nasal surgery|
|US8136527||Mar 13, 2008||Mar 20, 2012||Breathe Technologies, Inc.||Method and device for non-invasive ventilation with nasal interface|
|US8186352||May 29, 2012||Resmed Limited||Nasal assembly|
|US8220463||Feb 19, 2009||Jul 17, 2012||Fisher & Paykel Healthcare Limited||Breathing assistance apparatus|
|US8267092||Sep 18, 2012||Fisher & Paykel Healthcare Limited||Breathing assistance apparatus|
|US8286636||Oct 16, 2012||Resmed Limited||Nasal assembly|
|US8291906||Oct 23, 2012||Resmed Limited||Patient interface systems|
|US8297285||Jul 27, 2007||Oct 30, 2012||Resmed Limited||Delivery of respiratory therapy|
|US8312881||Nov 20, 2012||Resmed Limited||Nasal assembly|
|US8312883||Nov 20, 2012||Resmed Limited||Nasal assembly|
|US8381729||Feb 26, 2013||Breathe Technologies, Inc.||Methods and devices for minimally invasive respiratory support|
|US8418694||Apr 30, 2010||Apr 16, 2013||Breathe Technologies, Inc.||Systems, methods and apparatus for respiratory support of a patient|
|US8424530||Mar 7, 2011||Apr 23, 2013||Resmed Limited||Nasal assembly|
|US8485192||Jun 29, 2012||Jul 16, 2013||Resmed Limited||Cushion for patient interface|
|US8517023||Jan 29, 2008||Aug 27, 2013||Resmed Limited||Mask system with interchangeable headgear connectors|
|US8522784||Jan 23, 2013||Sep 3, 2013||Resmed Limited||Mask system|
|US8528561||Jan 18, 2013||Sep 10, 2013||Resmed Limited||Mask system|
|US8550081||Nov 29, 2012||Oct 8, 2013||Resmed Limited||Cushion for patient interface|
|US8550082||Nov 29, 2012||Oct 8, 2013||Resmed Limited||Cushion for patient interface|
|US8550083||Nov 29, 2012||Oct 8, 2013||Resmed Limited||Cushion for patient interface|
|US8550084||Feb 27, 2009||Oct 8, 2013||Resmed Limited||Mask system|
|US8555885||Nov 29, 2012||Oct 15, 2013||Resmed Limited||Cushion for patient interface|
|US8567399||Sep 26, 2008||Oct 29, 2013||Breathe Technologies, Inc.||Methods and devices for providing inspiratory and expiratory flow relief during ventilation therapy|
|US8567404||Nov 14, 2012||Oct 29, 2013||Resmed Limited||Cushion for patient interface|
|US8573213||Nov 14, 2012||Nov 5, 2013||Resmed Limited||Cushion for patient interface|
|US8573214||Nov 28, 2012||Nov 5, 2013||Resmed Limited||Cushion for patient interface|
|US8573215||Nov 29, 2012||Nov 5, 2013||Resmed Limited||Cushion for patient interface|
|US8573219||Dec 9, 2011||Nov 5, 2013||Breathe Technologies, Inc.||Method and device for non-invasive ventilation with nasal interface|
|US8578935||Nov 29, 2012||Nov 12, 2013||Resmed Limited||Cushion for patient interface|
|US8613280||Nov 14, 2012||Dec 24, 2013||Resmed Limited||Cushion for patient interface|
|US8613281||Nov 29, 2012||Dec 24, 2013||Resmed Limited||Cushion for patient interface|
|US8616211||Nov 29, 2012||Dec 31, 2013||Resmed Limited||Cushion for patient interface|
|US8677999||Aug 21, 2009||Mar 25, 2014||Breathe Technologies, Inc.||Methods and devices for providing mechanical ventilation with an open airway interface|
|US8733358||May 17, 2011||May 27, 2014||Resmed Limited||Cushion for a respiratory mask assembly|
|US8739793||Nov 11, 2008||Jun 3, 2014||Koninklijke Philips N.V.||Patient interface device including a coating adhesive layer|
|US8770193||Apr 17, 2009||Jul 8, 2014||Breathe Technologies, Inc.||Methods and devices for sensing respiration and controlling ventilator functions|
|US8770199||Dec 4, 2013||Jul 8, 2014||Ino Therapeutics Llc||Cannula for minimizing dilution of dosing during nitric oxide delivery|
|US8776793||Apr 17, 2009||Jul 15, 2014||Breathe Technologies, Inc.||Methods and devices for sensing respiration and controlling ventilator functions|
|US8807135||Jun 3, 2005||Aug 19, 2014||Resmed Limited||Cushion for a patient interface|
|US8851072 *||Feb 16, 2007||Oct 7, 2014||Wasatch Manufacturing, Llc||Supplemental air diffusion devices, kits and methods|
|US8851076||Aug 22, 2012||Oct 7, 2014||Fisher & Paykel Healthcare Limited||Breathing assistance apparatus|
|US8869797||Apr 18, 2008||Oct 28, 2014||Resmed Limited||Cushion and cushion to frame assembly mechanism for patient interface|
|US8869798||Sep 3, 2009||Oct 28, 2014||Resmed Limited||Foam-based interfacing structure method and apparatus|
|US8905031||Feb 14, 2012||Dec 9, 2014||Resmed Limited||Patient interface systems|
|US8925545||Sep 26, 2008||Jan 6, 2015||Breathe Technologies, Inc.||Methods and devices for treating sleep apnea|
|US8939152||Sep 30, 2011||Jan 27, 2015||Breathe Technologies, Inc.||Methods, systems and devices for humidifying a respiratory tract|
|US8944061||Mar 15, 2013||Feb 3, 2015||Resmed Limited||Cushion to frame assembly mechanism|
|US8955518||Feb 3, 2012||Feb 17, 2015||Breathe Technologies, Inc.||Methods, systems and devices for improving ventilation in a lung area|
|US8960196||May 29, 2013||Feb 24, 2015||Resmed Limited||Mask system with interchangeable headgear connectors|
|US8974486||Jun 10, 2009||Mar 10, 2015||Robert Kotler||Device and method for maintaining unobstructed nasal passageways after nasal surgery|
|US8985099||Feb 17, 2012||Mar 24, 2015||Breathe Technologies, Inc.||Tracheostoma spacer, tracheotomy method, and device for inserting a tracheostoma spacer|
|US8985117||Sep 14, 2012||Mar 24, 2015||Resmed Limited||Nasal assembly|
|US9010330 *||Sep 30, 2011||Apr 21, 2015||Resmed Limited||Patient interface systems|
|US9027556||Jan 23, 2013||May 12, 2015||Resmed Limited||Mask system|
|US9032959||Dec 4, 2013||May 19, 2015||Ino Therapeutics Llc||Cannula for minimizing dilution of dosing during nitric oxide delivery|
|US9067033||May 9, 2011||Jun 30, 2015||Resmed Limited||Compact oronasal patient interface|
|US9119931||Jul 31, 2014||Sep 1, 2015||Resmed Limited||Mask system|
|US9132250||Sep 3, 2010||Sep 15, 2015||Breathe Technologies, Inc.||Methods, systems and devices for non-invasive ventilation including a non-sealing ventilation interface with an entrainment port and/or pressure feature|
|US9149594||Sep 14, 2012||Oct 6, 2015||Resmed Limited||Patient interface systems|
|US9162034||Jul 27, 2007||Oct 20, 2015||Resmed Limited||Delivery of respiratory therapy|
|US9180270||Apr 2, 2010||Nov 10, 2015||Breathe Technologies, Inc.||Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles within an outer tube|
|US9220860||Feb 5, 2010||Dec 29, 2015||Resmed Limited||Compact oronasal patient interface|
|US9227034||Apr 2, 2010||Jan 5, 2016||Beathe Technologies, Inc.||Methods, systems and devices for non-invasive open ventilation for treating airway obstructions|
|US9238116||Aug 18, 2014||Jan 19, 2016||Redmed Limited||Cushion for a patient interface|
|US9295800||Dec 20, 2013||Mar 29, 2016||Resmed Limited||Cushion for patient interface|
|US9358358||Oct 29, 2013||Jun 7, 2016||Breathe Technologies, Inc.||Methods, systems and devices for humidifying a respiratory tract|
|US9381316||Jan 30, 2009||Jul 5, 2016||Resmed Limited||Interchangeable mask assembly|
|US9387040||Dec 4, 2014||Jul 12, 2016||Alcon Research, Ltd.||Multi-spot laser surgical probe using faceted optical elements|
|US20020157673 *||Jun 7, 2002||Oct 31, 2002||Kessler Fred B.||Nasal cannula retainer|
|US20040015092 *||May 15, 2001||Jan 22, 2004||Hans Pettersson||Apparatus and method|
|US20040035431 *||Aug 5, 2003||Feb 26, 2004||Wright Clifford A.||Ear cannula system and method of using same|
|US20040045553 *||Sep 10, 2003||Mar 11, 2004||Norman Cardoso||Nasal cannula|
|US20040261797 *||May 27, 2004||Dec 30, 2004||White Craig Karl||Breathing assistance apparatus|
|US20050121038 *||Dec 15, 2004||Jun 9, 2005||Cs Medical, Inc.||Method and apparatus for pharyngeal augmentation of ventilation|
|US20050161049 *||Mar 24, 2005||Jul 28, 2005||Medical Device Group, Inc., A California Corporation||Divided nasal cannula assembly|
|US20050166927 *||Nov 12, 2002||Aug 4, 2005||Mcauley Alastair E.||Nasal positive pressure device|
|US20060137690 *||Feb 20, 2004||Jun 29, 2006||Gunaratnam Michael K||Nasal assembly|
|US20080092904 *||Dec 19, 2007||Apr 24, 2008||Resmed Limited||Nasal assembly|
|US20080092905 *||Dec 20, 2007||Apr 24, 2008||Resmed Limited||Nasal assembly|
|US20080092906 *||Dec 21, 2007||Apr 24, 2008||Resmed Limited||Nasal assembly|
|US20080099024 *||Jan 4, 2008||May 1, 2008||Resmed Limited||Nasal assembly|
|US20080099027 *||Dec 27, 2007||May 1, 2008||Resmed Limited||Nasal assembly|
|US20080196719 *||Feb 16, 2007||Aug 21, 2008||Wasatch Manufacturing, Llc||Supplemental air diffusion devices, kits and methods|
|US20090095298 *||Dec 8, 2008||Apr 16, 2009||Resmed Limited||Nasal assembly|
|US20090145435 *||Feb 19, 2009||Jun 11, 2009||Craig Karl White||Breathing assistance apparatus|
|US20090248057 *||Apr 1, 2008||Oct 1, 2009||Robert Kotler||Device and method for maintaining unobstructed nasal passageways after nasal surgery|
|US20090248058 *||Jun 10, 2009||Oct 1, 2009||Robert Kotler||Device and Method for Maintaining Unobstructed Nasal Passageways after Nasal Surgery|
|US20100018535 *||Jul 16, 2009||Jan 28, 2010||Chi-San, LLC||Gel cushion pad for mask|
|US20100071693 *||Mar 25, 2010||Breathe Technologies||Methods and devices for providing mechanical ventilation with an open airway interface|
|US20100229872 *||Nov 11, 2008||Sep 16, 2010||Koninklijke Philips Electronics, N.V.||Patient interface device including a coating adhesive layer|
|US20110005524 *||Jun 4, 2010||Jan 13, 2011||Resmed Limited||Pad for a mask|
|US20110094513 *||Oct 26, 2010||Apr 28, 2011||Nihon Kohden Corporation||Oxygen mask|
|US20130041356 *||Feb 14, 2013||Ronald T. Smith||Multi-spot laser surgical probe using faceted optical elements|
|US20130213400 *||Sep 30, 2011||Aug 22, 2013||Resmed Limited||Patient interface systems|
|US20130255683 *||Apr 2, 2010||Oct 3, 2013||Breathe Technologies, Inc.||Methods, Systems and Devices for Non-Invasive Open Ventilation For Providing Ventilation Support|
|US20130298906 *||Apr 25, 2013||Nov 14, 2013||Genosys, Inc.||Nitric oxide reactor and distributor apparatus and method|
|EP0153132A1 *||Feb 12, 1985||Aug 28, 1985||Victoria Anne Forrest||Surgical device for maintaining airways in the nasal passages|
|EP2130563A1 *||Jun 4, 2009||Dec 9, 2009||ResMed Limited||Patient interface systems|
|EP2414019A4 *||Apr 2, 2010||Oct 7, 2015||Breathe Technologies Inc||Methods, systems and devices for non-invasive open ventilation with gas delivery nozzles in free space|
|EP2481438A1 *||Nov 11, 2008||Aug 1, 2012||Koninklijke Philips Electronics N.V.||A patient interface device including a coating adhesive layer|
|WO1982001823A1 *||Oct 26, 1981||Jun 10, 1982||Dow Corning||Nose mask gas delivery device|
|WO1996011594A1 *||Sep 1, 1995||Apr 25, 1996||Minnesota Mining And Manufacturing Company||Respirator nose clip|
|WO2001089381A1 *||May 15, 2001||Nov 29, 2001||Optovent Ab||Apparatus and method|
|Cooperative Classification||A61M2016/0688, A61M16/0666|