US2693799A - Breathing attachment for swimmers - Google Patents

Breathing attachment for swimmers Download PDF

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Publication number
US2693799A
US2693799A US149957A US14995750A US2693799A US 2693799 A US2693799 A US 2693799A US 149957 A US149957 A US 149957A US 14995750 A US14995750 A US 14995750A US 2693799 A US2693799 A US 2693799A
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nose
wall
attachment
opening
swimmers
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US149957A
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Jr Harry H Herman
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Jr Harry H Herman
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Priority claimed from US46522654 external-priority patent/US2945493A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/20Valves specially adapted to medical respiratory devices
    • A61M16/208Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B33/00Swimming equipment attachable to the head, e.g. swim caps or goggles

Description

Nov. 9, 1954 H. H. HERMAN, JR

BREATHING ATTACHMENT FOR SWIMMERS 2 Sheets-Sheet 1 Filed March 16, 1950 FlG.-l

FIG-3 F I 5 IIVVENTOR.

Hurry H. Herman Jr.

BY af v 'wfiwyzzw FlG.-4

ATTOR NEYS NOV. 9, 1954 HE JR 2,693,799

BREATHING ATTACHMENT FOR SWIMMERS Filed March 16, 1950 2 Sheets-Sheet 2 INVENTOR.

Hurry H. Herman Jr.

ATTORN EYS engagement with the upper lip 23 of the user, and is provided with an outer extension 24 adapted to engage the lower top surface of the nose, as well as the outer surface of each ala or wing 25 of the nose. Wall 22 is further provided with an opening 26 and cooperating valve means 27, to permit flow of fluid from the nose but to prevent flow of fluid into the nose. Opening 26 may be elongated and normally covered by a flap or strip valve 27, larger than opening 26 and attached to wall 22 at each end of opening 26, as shown. Flap 27 is formed of rubber or other sufliciently resilient material so that, as in Fig. 5, during exhalation, the air, such as following along the lines of the arrows, will force the flap 27 away from the opening 26, to permit discharge of the air. As will be evident, upon a reverse pressure on the flap 27, it will close against the opening 26, thus preventing flow of fluid into the nose.

' The wall 22 of the attachment of Figs. 4 and may be mounted on the nose by being clipped to each ala or wing 25, as by U-shaped springs 28, the outer leg of each spring being embedded in the outer extension 24 and each inner leg being embedded in an inner extension 29 of the wall 22, each inner extension 29 being adapted to engage the inside of the corresponding wing 25. in general, the springs 28 are made sufliciently strong that there is little possibility of the attachment being blown off the nose during a sudden exhalation, but preferably exert insuflicient clamping pressure to cause pain or acute discomfort. The wall or partition 22, as well as the extensions 24 and 29, conveniently formed integrally with the wall 22, may be made of rubber, synthetic rubber, plastic, or other suitable material, while the springs 28 may be made of suitable spring material of the type indicated previously.

In the embodiment illustrated in Figs. 6 to 8, the attachment fits inside the nostrils, but only a single valve is utilized. Thus, as in Fig. 7, the attachment may comprise an outer wall or partition 30, which is arcuate in front, or relatively flat in front and arcuate at the sides, as shown, and may have a relatively flat top 31 and a corresponding bottom 32, as in Figs. 6 and 8, to permit the attachment to be more readily grasped by the fingers of a user in placing and removing the attachment from the nose. The top, bottom and sides of outer wall 30 also merge at each side into a rearwardly extending, generally cylindrical legs 33, each of which extends rearwardly into one of the nostrils 10 and 11. On the inside, the legs 33 are joined by a bridge or strip 34 which extends around the end of the septum 18 and is spaced from the outer wall 30 to form a passageway 35 connecting the legs 33, i. e. the nostrils 10 and 11. The outer wall 30 may be provided with a single opening 36 and a valve flap 37, such as formed of more readily extensible rubber than the remainder of the attachment and attached to the wall 30 at each side of the opening 36, thus being adapted to be pushed away from the opening 36 upon exhalation, to permit the discharge of air, but adapted to be closed against the opening 36 upon a reverse pressure, to prevent the inflow of fluid, particularly water. A U-shaped spring 38 may be embedded in or attached to the inside of each leg 33 and the bridge 34, so as to be clipped over the septal cartilage, at the end of septum 18, thus holding the attachment securely in the nose. The spring 38 may be a relatively thin strip, sufliciently wide so that undue discomfort will not be produced by engagement of the spring with the septum, and may either be embedded within the rubber or similar material, as indicated in Fig. 8, or may be merely molded thereto, as in Fig. 7, with a hook 39 at each end tending to lock the spring to the inside of each.

Instead of the flap valve of Figs. 6 to 8, a cage valve, as illustrated in Figs. 9 and 10, may be utilized. Such a cage valve may comprise a disc 40 or 40', made of metal, fiber or the like, and disposed within a cage 41 or 41, which is provided with a series of openings 42 between legs 43 in the side and/or ends, so that the disc 48 or 40' will be lifted during exhalation from the opening 36' in wall 30, as to the dotted position of Fig. 9, thus permitting air to pass beneath the disc and outwardly through the openings 42. As will be evident, upon reverse pressure, the disc 40 or 40' will be forced back against the wall 30', to close the opening 36'. As in Fig. 9, the cage 41 may be made of metal or fiber, or, as in Fig. 10, the cage 41 may be made of the same material, such as rubber or rubber substitute, as the wall 30'. The cage 41' may be formed integrally with the wall 30, as in Fig. 10, and the disc 40' may be inserted later by distention of the opening 36'. When the cage 41 is made of metal, as in Fig. 9, it may be attached to the wall 30 in a suitable manner, as by the legs between openings 42 being embedded in the wall. The disc and cage preferably have a similar shape, such as a generally circular disc 40 and a generally cylindrical cage 41, as in Fig. 9, or, as in the case of disc 40 and cage 41 of Fig. 10, a shape corresponding to an elongated oval or an elongated rectangle with rounded corners, generally similar in shape to the flap 27 of Figs. 4 and 5. It will be evident, of course, that a cage valve may be substituted for the flap valve in the embodiment of Figs. 4 and 5.

In an additional embodiment of this invention, illustrated in Figs. 11 and 12, a separate body or plug B is provided for each nostril, rather than the two plugs being connected together, as in Figs. 1 to 3. Thus, the body B may include a cylindrical outer portion 12' and a flattened tubular inner portion 14, connected together at the rear with the inner portion 14 adapted to provide a valve, in the same manner as in the case of the bodies B of Fig. 2. However, a spring 45 may be embedded in each of the outer portions 12, as illustrated in Fig. 12, each such spring 45 extending circumferentially for a suflicient distance around the periphery of the outer portion 12, so that the plug or body B will be held securely within the nostril. The spring 15 may be made of round wire or a relatively wide, thin strip, and more than one spring may be provided in a body B. Also, the material of which the bodies B are made may be selected so that the outer portions 32' will have suflicient resilient strength to hold the plugs in the nostrils, without the necessity of embedding springs therein. It will be evident, of course, that the springs may be placed in other positions and have other shapes.

It will be evident, of course, that various changes may be made in the attachment of this invention. As will be noted, in the embodiment of Figs. 1 to 3, a valve is provided in the body fitting into each nostril, while in the embodiment of Figs. 4 and 5, and Figs. 6-8, a single valve is utilized. It will be understood, of course, that the wall or partition 22 of Fig. 5 or 30 of Fig. 7 may be provided with more than one valve. Also, different types of valves may be used in the various embodiments, since a tubular flap valve may be provided at the opening 26 of Fig. 5 or the opening 36 of Fig. 7, while the outer end of each body B of Fig. 3 may be provided with a flap valve, such as shown in Figs. 5 and 7, or a cage valve, such as shown in Figs. 9 and 10. When metal springs are utilized, they are preferably embedded in the rubber or other material of which substantially the remainder of the attachment is made, to prevent direct metal contact with the skin of the user. However, in some instances such contact'may be unobjectionable, in which case the springs may be only partly embedded in, or otherwise attached to, the remainder of the attachment, as by riveting or the like. Non-metallic spring material also may be utilized, it being understood, of course, that ordinarily metal spring material has considerably greater torsional strength and resistance to bending and twisting, than plastic. Furthermore, any of the embodiments may be formed integrally but of composite material, to provide the different properties desired in each portion of the attachment. Thus, that portion which clips over either the septum or the ala or wing of the nose, may be made of plastic or similar material having sufiicient spring qualities to hold the attachment to the nose, while the remainder of the attachment, except for the valves, may be made of relatively soft rubber, synthetic rubber or plastic, adapted nasal structure. The valves, of course, when tubular or flap valves, are preferably made of relatively highly resilient material, such as natural rubber or equivalent synthetic rubber, which can be stretched or distended with little difliculty, to permit easy exhalation, yet will spring back quickly to prevent the accidental inhalation or splashing of water into the nostrils. Retention of such elastic qualities during a relatively long life is, of course, highly desirable for the valve material. The entire attachment, except for metal springs where used, may be made of a relatively highly resilient rubber, with certain portions having a thicker section where maximum resilience is not desired.

to accommodate slight variations in' The attachments, of this invention may be made in a number of different ways. Perhaps the simplest way to make the attachment of Figs. 1 to 3 is in a single molding operation, it being noted that when a bow on the spring provides a projection, the projecting end of the spring may be held securely in the mold, while the rubber is being vulcanized or plastic molded 'therearound. The embodiment of Figs. 4 and 5, and also of Figs. 68, may be made in two operations, the first being the molding of the attachment except for the valve, and the; second being the attachment of the valve flap to the front wall. As indicated previously, when the cage of a cage valve is made of metal, the cage may have legs embedded in the metal, and when the cage is made of the same material as the front wall, the cage may be molded integrally therewith. The plug or body of Figs. 11 and 12 may be conveniently formed in a single molding operation. It will be evident, of course, that different portions of the various attachments may be made of different materials, and in such instances more than one operation may be desirable for making the same.

From the foregoing, it will be evident that the breathing attachment for swimmers of this invention fulfills to a marked degree the requirements and objects hereinbefore set forth. Through the provision of a wall having an opening and valve means controlling the flow of fluid through the opening, so that the outflow of fluid from the nose is permitted but the inflow of fluid is prevented, inhalation through the mouth and exhalation through the nose, as in certain swimming strokes, is clearly permitted. Also, since the attachment permits inhalation through the mouth and exhalation through the nose, it may be worn during training and will assist in the training of a swimmer in such strokes, as Well as encouraging the proper breathing operations. As will further be evident, the attachment may be placed on the nose and taken off i with relative ease, since there is no necessity for tying bands or straps around the head, which tend to slip off during use. In distinction thereto, it is a relatively simple matter merely to slip the attachment of this invention into or over the nose, or to remove the same. Because of the material of which the attachment is preferably made, and also because the attachment tends to fit the nose and/or nostrils, it may be worn with a relative minimum of discomfort.

It will further be evident that additional variations and embodiments of this invention may exist, without departing from the spirit and scope thereof.

What is claimed is:

l. A breathing attachment for swimmers, comprising the combination of a wall having an opening, said wall being shaped to fit against a portion of the nose of a user and when so fitted preventing the flow of fluid into or out of each nostril of such nose except through said opening; and valve means including a flat strip extending over said opening to permit flow of fluid from said nose but to prevent flow of fluid into said nose.

2. A breathing attachment for swimmers, comprising the combination of a wall having an opening, said Wall being shaped to fit against a portion of the nose of a user and when so fitted preventing the flow of fluid into or out of each nostril of such nose except through sa1d opening; valve means associated with said opening to permit flow of fluid from said nose but to prevent flow of fluid into said nose; and resilient means for clamping the ala cartilage at each side of the nose of a user.

3. A breathing attachment for swimmers, as defined in claim 2, wherein said wall encloses the top and side surfaces at the lower end of the nose of a user.

4. A breathing attachment for swimmers, as defined in claim 2, wherein at least a portion of said wall extends across the front of the lower end of the nose of a user and is spaced from the septum, said opening being in such portion of said wall.

5. A breathing attachment for swimmers, comprising a pair of bodies formed of resilient, rubber-like material and each having a generally cylindrical outer portion constructed and arranged to fit within a nostril of a user, each said body having an inner portion connected at its rear end with said outer portion and extending outwardly within said outer portion, said inner portion being formed as a flattened tube adapted to provide a valve for discharge of air from the nostril but prevent flow of fluid into the nostril; a strip connecting the outer portions of sa1d bodies, said strip extending across the end of the septum of a. user with said bodies. in the nostrils; andv a spring embedded insaid strip and in said outer portions of .said bodies, said spring being U-shaped so as-to clamp the septum of a user and thereby maintain said attachment in position.

6. A breathing attachment for swimmers as defined in claim 5, wherein said spring extends outwardly from said strip and is covered with said material, to form a projection adapted to be grasped by the user in placing and removing said attachment.

7. A breathing attachment for swimmers, comprising a wall formed of rubber-like material and having an opening, said wall being shaped to fit the end of the nose of a user and having an extension engaging the outer surface of the lower end of the nose and the outer surface of each wing and also extending into engagement with the upper lip of said user, said wall having an inner extension adapted to engage the inside surface of the wing of each nostril, said opening being in the central portion of said wall, said wall when so fitted preventing the flow of fluid into or out of such nose except through said opening; a pair of U-shaped springs, each having one leg embedded in an inner extension of said wall and the other leg embedded in the adjacent portion of the outer extension of said wall, each spring thereby clamping a wing of said nose; and a flap valve strip extending across said opening to permit flow of fluid from said nose but to prevent flow of fluid into said nose.

8. A breathing attachment for swimmers, comprising an outer wall having an arcuate front, a relatively flat top and bottom and a pair of rearwardly extending, generally cylindrical legs, each leg being constructed and arranged to fit within a nostril of a user; a bridge connecting said legs on the inside and extending around the septum of said nose in spaced relation to said arcuate front of said outer wall, said arcuate front having an opening, and said outer wall and bridge being formed of resilient, rubber-like material; valve means associated with sa1d opening to permit discharge of air from the nostril but prevent flow of fluid into the nostril; and a U-shaped spring at least partially embedded in the inner portion of each leg and said bridge for clamping said attachment to said septum.

9. breathing attachment for swimmers, as defined in claim 8, wherein said spring is embedded in said legs and brldge so that rubber-like material contacts said septum.

10. A breathing attachment for swimmers, comprismg the combination of a wall shaped to fit against a portion of the nose of a user and when so fitted preventing the flow of fluid into each nostril of such nose; valve means associated with said wall to permit flow of fluid from sa1d nose; and resilient means for clamping at least one cartilage of the nose of a user, to hold said attachment to the nose of such user.

11. A breathing attachment for swimmers, as defined in claim 10, wherein said wall extends into each nostril of a user; and including a valve for the portion of said wall extending into each nostril.

12. A breathing attachment for swimmers, as defined 1n clalm 10, wherein an outer portion of such wall is spaced from the septum of the nose of a user, said outer portion having an opening with which said valve is assoclated.

13. breathing attachment for swimmers, as defined in claim 10, wherein said resilient means includes a spring.

14. A breathing attachment for swimmers, comprising the combtnatlon of a Wall having an opening, said wall being shaped to fit against a portion of the nose of a user and when so fitted preventing the flow of fluid into or out of each nostril of such nose except through said opening; means including at least one spring for clamping sa1d wall to at least one cartilage of said nose; and valve means associated with said opening to permit flow of flu1d from said nose but to prevent flow of fluid into sa1d nose, said valve means including a cage having apertures, and a disc in said cage and adapted to cover said opening in said wall.

15. A breathing attachment for swimmers, comprising a body formed generally of resilient, rubber-like materlal and being shaped to conform to a portion of the nose of a user and to contact the surface of said nose at least ad acent the discharge end of each nostril and havleast one spring for clamping said body to at least one 5 cartilage of said nose.

References Cited in the file of this patent Number Number UNITED STATES PATENTS Name Date Teter June 23, 1903 FOREIGN PATENTS Country Date Germany of 1930 Germany of 1930

US149957A 1950-03-16 1950-03-16 Breathing attachment for swimmers Expired - Lifetime US2693799A (en)

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US149957A US2693799A (en) 1950-03-16 1950-03-16 Breathing attachment for swimmers
US46522654 US2945493A (en) 1950-03-16 1954-10-28 Breathing attachment for swimmers

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2924217A (en) * 1956-11-02 1960-02-09 Elwood H Regel Nose plug
US3424152A (en) * 1966-02-25 1969-01-28 Irene Dorsey Kuhlman Tone downer
US4280493A (en) * 1980-01-30 1981-07-28 Council Edward L Nose shield
US4934359A (en) * 1987-09-03 1990-06-19 Hal Blaine Nasal exhaler and method
US5743256A (en) * 1996-03-07 1998-04-28 Jalowayski; Alfredo A. Nostril closure means
US6155253A (en) * 1997-01-16 2000-12-05 Ocean Reef S.R.L. Protection mask, in particular for underwater use
US20090054923A1 (en) * 2004-11-01 2009-02-26 Benson Medical Services Pty Ltd Nasal Device
US7644714B2 (en) 2005-05-27 2010-01-12 Apnex Medical, Inc. Devices and methods for treating sleep disorders
US7809442B2 (en) 2006-10-13 2010-10-05 Apnex Medical, Inc. Obstructive sleep apnea treatment devices, systems and methods
US20110139160A1 (en) * 2009-12-11 2011-06-16 Dejule Ruthanna Method of facilitating inhalation of controlled quantities of exhaled air
US20120318279A1 (en) * 2010-03-05 2012-12-20 Seven Dreamers Laboratories, Inc. Nasal cavity insertion device
US8386046B2 (en) 2011-01-28 2013-02-26 Apnex Medical, Inc. Screening devices and methods for obstructive sleep apnea therapy
US8855771B2 (en) 2011-01-28 2014-10-07 Cyberonics, Inc. Screening devices and methods for obstructive sleep apnea therapy
AT515065A3 (en) * 2013-11-11 2015-10-15 Matthias Prodinger Device for improving respiratory function
US9186511B2 (en) 2006-10-13 2015-11-17 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods
US9205262B2 (en) 2011-05-12 2015-12-08 Cyberonics, Inc. Devices and methods for sleep apnea treatment
US9744354B2 (en) 2008-12-31 2017-08-29 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US731973A (en) * 1903-04-01 1903-06-23 Charles K Teter Nasal inhaler.
DE509546C (en) * 1928-08-29 1930-10-09 Max Sauter Dr Nasenschliesser
DE509545C (en) * 1930-10-09 Max Sauter Dr Nasenschliesser

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE509545C (en) * 1930-10-09 Max Sauter Dr Nasenschliesser
US731973A (en) * 1903-04-01 1903-06-23 Charles K Teter Nasal inhaler.
DE509546C (en) * 1928-08-29 1930-10-09 Max Sauter Dr Nasenschliesser

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2924217A (en) * 1956-11-02 1960-02-09 Elwood H Regel Nose plug
US3424152A (en) * 1966-02-25 1969-01-28 Irene Dorsey Kuhlman Tone downer
US4280493A (en) * 1980-01-30 1981-07-28 Council Edward L Nose shield
US4934359A (en) * 1987-09-03 1990-06-19 Hal Blaine Nasal exhaler and method
US5743256A (en) * 1996-03-07 1998-04-28 Jalowayski; Alfredo A. Nostril closure means
US6155253A (en) * 1997-01-16 2000-12-05 Ocean Reef S.R.L. Protection mask, in particular for underwater use
US20090054923A1 (en) * 2004-11-01 2009-02-26 Benson Medical Services Pty Ltd Nasal Device
US7644714B2 (en) 2005-05-27 2010-01-12 Apnex Medical, Inc. Devices and methods for treating sleep disorders
US7809442B2 (en) 2006-10-13 2010-10-05 Apnex Medical, Inc. Obstructive sleep apnea treatment devices, systems and methods
US9186511B2 (en) 2006-10-13 2015-11-17 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8311645B2 (en) 2006-10-13 2012-11-13 Apnex Medical, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8744589B2 (en) 2006-10-13 2014-06-03 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8718783B2 (en) 2006-10-13 2014-05-06 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8639354B2 (en) 2006-10-13 2014-01-28 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8417343B2 (en) 2006-10-13 2013-04-09 Apnex Medical, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8428727B2 (en) 2006-10-13 2013-04-23 Apnex Medical, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8498712B2 (en) 2006-10-13 2013-07-30 Apnex Medical, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8626304B2 (en) 2006-10-13 2014-01-07 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods
US9744354B2 (en) 2008-12-31 2017-08-29 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods
US10105538B2 (en) 2008-12-31 2018-10-23 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8408211B2 (en) * 2009-12-11 2013-04-02 Ruthanna DeJule Method of facilitating inhalation of controlled quantities of exhaled air
US20110139160A1 (en) * 2009-12-11 2011-06-16 Dejule Ruthanna Method of facilitating inhalation of controlled quantities of exhaled air
US9492309B2 (en) * 2010-03-05 2016-11-15 Seven Dreamers Laboratories, Inc. Nasal cavity insertion device
US20120318279A1 (en) * 2010-03-05 2012-12-20 Seven Dreamers Laboratories, Inc. Nasal cavity insertion device
US8386046B2 (en) 2011-01-28 2013-02-26 Apnex Medical, Inc. Screening devices and methods for obstructive sleep apnea therapy
US9113838B2 (en) 2011-01-28 2015-08-25 Cyberonics, Inc. Screening devices and methods for obstructive sleep apnea therapy
US9913982B2 (en) 2011-01-28 2018-03-13 Cyberonics, Inc. Obstructive sleep apnea treatment devices, systems and methods
US8855771B2 (en) 2011-01-28 2014-10-07 Cyberonics, Inc. Screening devices and methods for obstructive sleep apnea therapy
US9555247B2 (en) 2011-01-28 2017-01-31 Cyberonics, Inc. Screening devices and methods for obstructive sleep apnea therapy
US10231645B2 (en) 2011-01-28 2019-03-19 Livanova Usa, Inc. Screening devices and methods for obstructive sleep apnea therapy
US9757564B2 (en) 2011-05-12 2017-09-12 Cyberonics, Inc. Devices and methods for sleep apnea treatment
US9205262B2 (en) 2011-05-12 2015-12-08 Cyberonics, Inc. Devices and methods for sleep apnea treatment
US10052484B2 (en) 2011-10-03 2018-08-21 Cyberonics, Inc. Devices and methods for sleep apnea treatment
AT515065A3 (en) * 2013-11-11 2015-10-15 Matthias Prodinger Device for improving respiratory function
AT515065B1 (en) * 2013-11-11 2016-03-15 Matthias Prodinger Device for improving respiratory function

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