Nasal dilator and method of manufacturing a nasal dilator

Abstract

The invention relates to a nasal dilator (400), comprising a first support frame (402) and a second support frame (404) for insertion into left and right nasal cavities (1), and a bridge element (406), wherein the bridge element (406) connects the first support frame (402) and the second support frame (404), wherein the bridge element (406) is configured for abutment against the external end of the nose septum, wherein each of the first support frame (402) and the second support frame (404) is configured to extend from the bridge element (406) through a nostril into a posterior section of the respective nasal cavity (1) when the nasal dilator (400) is in use, wherein each of the first support frame (402) and the second support frame (404) comprises a main part (408, 410) and a stabilizing part (412, 414), the main part (408, 410) having a planar or curved area spanned by a plurality of frame segments (418a, 418b, 418c, 418d) forming a continuous delimiting edge for supporting the nasal wings, and the stabilizing part (412, 414) having a longitudinal support member (412, 414) for arrangement on the nasal vestibular floor, and wherein the main part (408, 410) and the stabilizing part (412, 414) are arranged at a distance to each other. The invention furthermore relates to a method for manufacturing the nasal dilator.

Description

[0001] TITLE: NASAL DILATOR AND METHOD OF MANUFACTURING A NASAL DILATOR

[0002] FIELD OF THE INVENTION

[0003] The present invention generally relates to a nasal device to be worn in the nose of a person, and more particularly, a nasal dilator for improving and / or maintaining an airway of the nasal passages. The invention further relates to a method of manufacturing a nasal dilator.

[0004] BACKGROUND

[0005] Breathing is a fundamental prerequisite for life. The manner in which one breathes also significantly impacts health. It is well-known that breathing through the nose is optimal for the body. However, it is estimated that 25-50% of the population primarily breathe through their mouths. This percentage notably increases during physical activity.

[0006] The nose is intricately designed for breathing and optimizes air for the lungs by filtering, humidifying, and warming the air, unlike the mouth. Nasal breathing facilitates higher oxygen uptake, is more energy -efficient, and causes less fluid loss compared to mouth breathing. Additionally, nasal breathing promotes better oral and dental health, reduces snoring, and prevents night-time breathing pauses.

[0007] During physical activity, the need for breathing increases, and airflow through the nose intensifies. When airflow intensifies, many persons change from breathing through the nose to breathing through the mouth as the lower part (or front) of the nose becomes constricted. This constriction happens due to increased negative pressure in the nasal cavity causing the nasal passages to narrow and collapse slightly. Thus, during physical activity, many persons miss out on the benefits of nasal breathing.

[0008] Current state-of-the-art solutions in the form of nasal dilators or expanders aim to address these issues by providing means to widen the nasal passages, thereby facilitating improved airflow and alleviating constriction.

[0009] Various types of nasal dilators are known, such as adhesive strips, nasal cones, clips, and inserts. Adhesive strips are applied externally to pull apart the nostrils during inhalation, preventing collapse. Nasal cones and inserts are inserted into the nasal cavities to mechanically widen the passages. Only some of these are suitable for use during physical activity and some are aimed at use for example during sleep to prevent snoring.

[0010] CN105999522 A discloses a nasal dilator comprising two expansion components capable of stretching into the nasal cavity, and the two expansion components are connected into an integrated structure through a flexible connection portion convenient to hold and symmetrically arranged on the two sides of the connection portion.

[0011] SUMMARY OF THE INVENTION

[0012] An object according to the present invention is to remedy at least one of the abovementioned disadvantages or problems.

[0013] Thus, an object according to the present invention is to provide a nasal dilator which expands the nasal passages and / or prevents constriction of the nasal passages especially during physical activity when breathing intensifies. More specifically, it is an object to support the lateral wall and / or roof of the nasal cavity along the nasal passages and preferably all the way to the lower, external end of the nose, e.g. from the valvula interna to the nostril openings.

[0014] It is an object to provide a nasal dilator which occupies minimal space within the nasal passages to enhance maximum airflow capacity, and which preferably also is lightweight. It is furthermore an object to provide a nasal dilator that is easy to insert and take out and that fits snugly within the nasal cavities to prevent it from slipping or shifting out of place during use.

[0015] It is furthermore an object to provide a nasal dilator which is comfortable to wear.

[0016] It is furthermore an object to provide a nasal dilator which maintains the positive effects of nose breathing, such as filtering, humidifying, and warming the air.

[0017] The terms “upper” and “lower”, when used herein to describe components, or positions of components are, unless otherwise specified, used to describe the position when the dilator is placed within the nasal cavities of the nose. That is, “upper” refers to a position further within the nasal cavities, i.e. posteriorly, compared to “lower”, and “lower” implies that something is placed further towards the nostril opening, i.e. anteriorly, compared to “upper”.

[0018] The term “nasal passage” when used herein refers to the passage of the nasal cavities where the air flows during breathing. The nostrils are the openings to the nasal passages. Unless otherwise specified, dimensions, relative sizes and positions are specified in undeformed condition.

[0019] The present invention is set forth and characterized in the independent claims, while the dependent claims and the following description describe other characteristics of the invention.

[0020] With the abovementioned challenges in mind, the present invention brings forward a nasal dilator designed to support the lateral cartilage of the nose and / or expand the nasal passages so as to maintain or improve the airflow capacity through the nasal passages. The dilator is easy to use and takes up very little space within the nasal cavities.

[0021] The present invention relates to a nasal dilator comprising a first support frame and a second support frame for insertion into the left and right nasal cavities, and a bridge element, wherein the bridge element connects the first support frame and the second support frame, wherein the bridge element is configured for abutment against the external end of the nose septum, wherein each of the first support frame and the second support frame is configured to extend from the bridge element through a nostril into a posterior section of the respective nasal cavity when the nasal dilator is in use, wherein each of the first support frame and the second support frame comprises a main part and a stabilizing part, the main part having a planar or curved area spanned by a plurality of frame segments forming a continuous delimiting edge for supporting the nasal wings, and the stabilizing part having a longitudinal support member for arrangement on the nasal vestibular floor, and wherein the main part and the stabilizing part are arranged at a distance to each other.

[0022] The nasal dilator is a device for improving and / or maintaining an airway of the nasal passages.

[0023] The nasal dilator is preferably symmetrical with respect to a central, longitudinal axis which in use is aligned with the septum of the nose.

[0024] The nasal dilator is configured for supporting, and preferably also expanding, the wings of the nose (the alar cartilage) from inside the nasal cavities to prevent inwards movement and thus restriction of the nasal passage for example during physical activity when breathing intensifies and the negative pressure in the nasal passages is increased. The nasal dilator thus ensures that the nasal passages remain open to maximize the airflow through the nasal passages also during physical activity.

[0025] The support frames may also be referred to as dilating frames. The support frames are preferably designed so that all its members or sections, when in use, lie against a part of the nose, e.g. against the nasal cavity floor, medial wall, lateral wall or roof, to ensure minimal or no reduction of the available space for air flow through the nasal passages.

[0026] The main part of the respective support frame is designed to abut against an inner side of the nasal wings to dilate or spread the wings in a lateral outward direction and at least slightly upwards. The stabilizing part in turn is dedicated for abutting against the nasal cavity floor, i.e. from the septal columella along the nasal vestibular floor, to provide a counter-force. By this, the respective support frame is able to exert two dilating forces by the main part and the stabilizing part that may be opposite to each other.

[0027] The main part defines an area that abuts a part of a wing of the nose. It is created by a group of consecutive frame segments, frame parts, legs, wires, or other structural elements that are arranged along a certain path to define the shape of the main part. In the following, these structural elements may also be referred to as “frame segment”.

[0028] The frame segments may be straight. Connections or joints between the frame segments may be rounded. The nasal dilator may be made from a rigid material to generally maintain its shape. However, the material may be sufficiently flexible or elastic to allow an adaption to the shape of the nasal cavity of the user, while applying a sufficient dilating effect. It is conceivable that the nasal dilator may be made in at least two different sizes.

[0029] The stabilizing part may be understood as a counterpart for the main part. The combination of the main part and the stabilizing part allows to spread the respective wing of the nose, while the nasal dilator supports itself on the nasal vestibular floor.

[0030] The shape of the main part may be adapted to the shape of the cavity of the nose in that it may be tapered outwardly and / or downwardly curved. It may thus exert a force that is upwardly and laterally outwards directed.

[0031] The support frames may be sized for a tight fit within the nasal cavities. The form of the nasal dilator is designed for allowing elastic deformation during insertion for easier insertion and for a tight fit during use. The elasticity or stiffness of the dilator is a result of a combination of factors including material properties, cross-section of the different sections or components, and shape or form of the dilator.

[0032] The main part may be an upper support section. The stabilizing part may be a lower support section. The upper and lower support sections may each comprise an open curve shape with a first end and a second end, wherein each support frame comprises a first longitudinal support member extending between the first end of the lower support section and the first end of the upper support section of the respective support frame, the first longitudinal support member being arranged for supporting against the nasal cavity floor and / or the medial wall when in use, and wherein each support frame comprises a second longitudinal support member extending between the second end of the lower support section and the second end of the upper support section of the respective support frame, the second longitudinal support member being arranged for supporting against the lateral wall of the nasal cavity when in use.

[0033] Thus, this embodiment defines nasal dilator comprising a first and a second support frame for insertion into the respective nasal cavities, a bridge element connecting the first and second support frames, wherein the bridge element is configured for abutment against the external end of the nose septum, wherein each support frame comprises a lower support section and an upper support section for supporting the nasal cavity walls and roof at a lower portion and an upper portion of the nasal cavity, respectively, wherein the upper and lower support sections each comprise an open curve shape with a first end and a second end, wherein each support frame comprises a first longitudinal support member extending between the first end of the lower support section and the first end of the upper support section of the respective support frame, the first longitudinal support member being arranged for supporting against the nasal cavity floor and / or the medial wall when in use, wherein each support frame comprises a second longitudinal support member extending between the second end of the lower support section and the second end of the upper support section of the respective support frame, the second longitudinal support member being arranged for supporting against the lateral wall of the nasal cavity when in use.

[0034] The upper support frame may be configured to support the upper cartilage, and in particular the upper lateral cartilage. The lower support section may be configured to support the lower alar cartilage and in particular the lateral crus of the lower alar cartilage. The nasal dilator may thus provide support from the valvula interna to the lower part of the nasal wings proximate the nostril openings. The second longitudinal support member may provide continuous, longitudinal support from the upper to the lower support section, i.e. between the valvula interna and the nostril openings. The softest part of the nose, the nasal wings, where constriction during heavy breathing is most severe, may thus be supported by the dilator.

[0035] The upper support frame may also be referred to as the posterior support frame.

[0036] The lower support section may also be referred to as the anterior support frame.

[0037] A plane defined by the two first longitudinal members may be referred to as the base plane or the base of the nasal dilator. The bridge element may be arranged in the base plane. The first longitudinal support members may be arranged for support against the medial wall, the floor, and / or a transition area between the floor and the medial wall.

[0038] The upper and lower support sections and / or the bridge element and / or the longitudinal support members may be formed by a strip of material which strip is preferably thin or slim, such as wire or a slim rod. The strip may have a thickness or diameter in the range 0,5 mm to 7,0mm. Thus, the entire nasal dilator may comprise a wire-like structure built up by strips of material interconnected at their ends. This has the advantage that the dilator occupies minimal space within the nasal cavities when in use, to enhance maximum airflow capacity. Even more, since the dilator covers only minimal surface of the nasal walls, roof and floor, the filtering function of the nose hairs is not affected, i.e. filtering of dust, particles, or allergens is maintained. The structure of the dilator makes it easy to clean.

[0039] Preferably the cross-sectional profile of any part of the nasal dilator, e.g. the first longitudinal support members and / or the second longitudinal support members and / or the bridge element and / or at least sections of the open curve shape of the support sections, and / or of any frame segment and / or of the main part and / or of the stabilizing part are rounded, such as circular or oval, or at least having rounded corners. The rounded shape makes it more comfortable for the user to wear compared to a profile with edges or corners.

[0040] The profile of the strips of material may be uniform throughout the entire body of the nasal dilator. In some embodiments, some strips or sections may have a different profile (e.g. flat strip) than other strips or sections of the dilator. For example, the first legs and / or second legs of the upper and / or lower support section and / or the second longitudinal support members may have an oval or elongated cross-sectional shape with the smaller dimension being in the lateral or transverse direction, to improve stiffness and / or increase the contact surface against the skin while at the same time not affecting the available space for airflow. This also ensures a snug fit ensuring that it remains secure and stable to prevent loosening or falling out. Likewise, the concave top portion may also have an oval or elongated shape to improve stiffness (e.g. resistance to bending).

[0041] The bridge element may be attached to each of the lower support sections.

[0042] The bridge element may comprise a U-shape having a first end and a second end, wherein the first end is connected to the first longitudinal support member of the first support frame and the second end is connected to the first longitudinal support member of the second support frame. The first longitudinal support members and the bridge element may be arranged in the same plane, i.e. the base plane, such that they together form a U-shape with two elongate arms for supporting against each side of the medial wall and / or the floor of the nasal cavity. Since the first longitudinal support members are connected only at their lower ends by the bridge element, they may be bent slightly inwards at least near their upper ends to ease insertion of the support frames into the nasal cavities.

[0043] The open curve shape of each of the upper and lower support sections may comprise a first leg for support against the nasal cavity medial wall, a second leg for support against the nasal cavity lateral wall, and a concave portion connecting the first and second legs, the concave portion being for support against the nasal cavity roof.

[0044] The lower and / or upper support sections may comprise a U-shape or V-shape.

[0045] The first legs of the open curve shapes may be arranged perpendicularly to the base plane of the first longitudinal members, i.e. the first legs extend vertically upwards from the base.

[0046] The radius of curvature of the concave portion may be for example between 2 and 5 mm.

[0047] For each of the support frames the height of the lower support section may be smaller than the height of the upper support section. This is to adapt to the shape of the nasal cavity. The height of the lower support section may in embodiments be equal to the height of the upper support section.

[0048] The height is defined as the vertical distance from the base plane comprising the first longitudinal members to the top or apex of the open curve shape. Thus, the vertical distance between the top or apex of each of the lower support sections and the first longitudinal member of the respective support frame is smaller than the vertical distance between the top or apex of the open curve shape of each of the upper support sections and the first longitudinal member of the respective support frame.

[0049] The height of the lower support section of the first support frame may be equal to the height of the lower support section of the second support frame. The height of the upper support section of the first support frame may be equal to the height of the upper support section of the second support frame.

[0050] The height of the lower support section may for example be between 50% and 100% of the height of the upper support section. The height of the lower support section may for example be between 60% and 95% of the height of the upper support section. The height of the lower support section may for example be between 70% and 90% of the height of the upper support section.

[0051] The position of the second longitudinal support member may be elevated compared to the position of the first longitudinal support member with respect to the floor of the nasal cavity when in use. Thus, the second longitudinal support member provides continuous, longitudinal support along the lateral wall of the nose, at a raised position between the floor and the roof of the nasal cavity.

[0052] Thus, the position of the second longitudinal support member is also elevated compared to the position of the first longitudinal support member with respect to the base of the nasal dilator. The height of the second longitudinal support member may for example be between 20% and 80% of the height of the upper support section. The height of the second longitudinal support member may for example be between 20% and 60% of the height of the upper support section. The height of the second longitudinal support member may for example be between 30% and 50% of the height of the upper support section. Because the open curve shape may allow for some elastic deformation, e.g. due to form and / or material properties, the second longitudinal support member may be moved downwards towards the base and / or inwards towards the central axis during elastic deformation.

[0053] The second leg of the upper support section and / or lower support section of each support frame may be shorter than the respective first leg.

[0054] Because the lower lateral cartilage is generally more flexible or softer than the upper cartilage, there is often more space and also increased possibility for expansion of the nasal passage in this area. Therefore, the upper and lower support sections may be designed differently.

[0055] The second leg of the upper support sections may for example be longer than the second leg of the lower support sections. The angle in the transverse plane between the first and second legs of the upper support sections may for example be smaller than the angle between the first and second legs of the lower support sections.

[0056] The second leg of the upper support section and / or lower support section of each support frame may be arranged at an angle relative to the respective first leg, the angle taken in a transverse plane, said angle may be more than 20 and less than 75 degrees.

[0057] A transverse plane is a plane perpendicular to the base plane and extending in the lateral direction.

[0058] The angle in the transverse plane between the first and second leg of each of the upper support sections may be different from, e.g. smaller than, the angle in the transverse plane between the first and second leg of each of the lower support sections.

[0059] Preferably the angle in the transverse plane between the first and second leg of each of the upper support sections is more than 20 and less than 60 degrees, more preferably more than 25 and less than 55 degrees, and even more preferably more than 30 and less than 50 degrees. Preferably the angle in the transverse plane between the first and second leg of each of the lower support sections is more than 20 and less than 60 degrees, more preferably more than 25 and less than 55 degrees, and even more preferably more than 30 and less than 50 degrees. The angle in the transverse plane between the first and second leg of each of the upper support sections may be smaller than for the lower support sections. This is to adapt to the anatomy of the nose, where there is typically more space and / or softer tissue in the lower part of the nose.

[0060] The first longitudinal support member and the second longitudinal support member of each of the support frames may be parallel.

[0061] The second leg of the upper support section and / or lower support section of each support frame may be straight or concave. A concave second leg may better follow the shape of the internal lateral wall of the nose.

[0062] The plurality of frame segments may form a closed delimiting edge. Thus, at least three frame segments may connect to each other to form a polygon or another closed shape that spans up the planar or curved area to abut the lateral wall of the wing of the nose.

[0063] The closed delimiting edge has a substantially trapezoidal shape. The trapezoidal shape may comprise two parallel edges, wherein one of the parallel edges is longer than the other one. The longer edge may be arranged further to the center of the nose, i.e. the medial wall, wherein the shorter edge may be arranged laterally further outwards to be in contact with the lateral wall.

[0064] The main part may comprise an elongated anterior section, to which a posterior section is attached, wherein the closed delimiting contour is formed by the posterior section. The area spanned by the frame segments may thus be arranged in a further posterior location and is held there by the elongated anterior section. The combination of the anterior section and the posterior section may resemble a shape that is similar to the capital letter P.

[0065] One of the frame segments may form a main posterior frame segment to which the other frame segments may be attached, wherein the main posterior frame segment and the anterior section may enclose an angle of 10 to 45°. The posterior section may thus be bent or swiveled about an axis that is perpendicular to the anterior section and parallel to at least a part of the area spanned up by the frame segments and close to the main posterior frame segment.

[0066] The anterior section of the first support frame and the anterior section of the second support frame may be substantially parallel to each other. They may abut the opposite medial walls of the nose of the user when in use. The main posterior frame segment of the first support structure and the main posterior frame segment of the second support structure may be substantially parallel to each other. Also, the main posterior frame segments may abut the opposite medial walls of the nose of the user when in use. The anterior sections and the main posterior frame segments may thus extend on the same plane.

[0067] The posterior sections of the first support structure and the posterior section of the second support frame may extend away from each other.

[0068] The nasal dilator may be formed as one piece.

[0069] The nasal dilator may in some embodiments be made by bending of a wire. However, this may result in sharp edges due to the ends of the wire. When the nasal dilator is formed as one piece, it is preferably formed as a closed wire -like structure with no open ends or wire ends, and thus sharp edges can be avoided. Furthermore, the closed structure may provide improved structural stability. Thus, the nasal dilator may be formed as one piece having a closed structure, i.e. no open ends.

[0070] The nasal dilator may be made of metal or plastic.

[0071] The material of the dilator should biocompatible, i.e. it should be compatible with the tissue and safe for use inside the nasal cavity and not cause harmful reactions when in contact with the body. The material is preferably aseptic and anti- allergenic. It should also be comfortable for the user. It should also be sterilisable.

[0072] Suitable materials may for example be titanium, aluminium, silicone, thermoplastic elastomers, polymer blends, medical-grade plastics. The dilator may in some embodiments have a core of a first material, e.g. a metal, to provide the required strength and stiffness and a coating, surface finish or outer layer providing the required biocompatible and / or surface properties.

[0073] In addition to biocompatibility, the material, or at least the core material should have the required strength, stiffness and resilience. The strength, stiffness and resilience of the dilator depends on the material choice as well as the shape or form of the dilator and should be considered in a total aspect to obtain a nasal dilator having the required structural properties, e.g. it should preferably be elastically deformable so as to allow elastic deformation by pressing with the fingers during insertion of the dilator, yet it shall regain its shape after use.

[0074] The material may also be formable by plastic deformation under certain conditions such as in a heated or softened state, in order to form the required bent and curved shape of the dilator from a single elongate, slender rod or a wire of a material. A metal or metal alloy may be suitable for this purpose. The cross-sectional thickness, in particular the lateral thickness, of the strips or sections forming the nasal dilator may be uniform for the entire device . However, the thickness may vary throughout the different locations on the nasal dilator to control the deformability, the user comfort, and / or the appeal. The thickness may be in the range 0,5 -7,0 mm. Some strips or sections may have a thinner or smaller cross-section than other strips or sections, e.g. some sections may have a diameter of between 0,5 -1,0mm, while other sections may have a diameter of between 2,0- 7,0mm.

[0075] The nasal dilator may be manufactured by additive manufacturing or by molding. These methods are suitable for high volumes.

[0076] The invention furthermore relates to a method of manufacturing a nasal dilator according to any of the preceding paragraphs using additive manufacturing or molding.

[0077] The nasal dilator may also be manufactured by a method comprising bending a wire or a rod to obtain the support frames and the bridge element according to the above paragraphs. The dilator may thus be made from a single wire or rod. This method may involve heating the wire or rod before bending.

[0078] Each of the above methods may comprise providing the dilator with a coating or surface finish.

[0079] The nasal dilator may be combined with a carrying box, which may have a closable lid and an interior space for receiving the nasal dilator. The interior space may be adapted to the shape of the nasal dilator. The interior space may be provided in the form of a recess or indentation. The interior space may be arranged in an insert that is placeable or mountable in the carrying box. Thus, when producing several different or differently-sized nasal dilators, only the inserts may be adapted to conform the shape of the nasal dilator. However, it is not ruled out that different carrying boxes are produced that are adapted to conform the shapes of the different nasal dilators. The nasal dilator may comprise a magnet cavity. The magnet cavity may exemplarily be arranged within the bridge element. The magnet cavity may be configured to receive a magnet or a magnetic element. A corresponding magnetic element or magnet may be arranged in the carrying box in or adjacent to the interior space in a position where the magnet or magnetic element will be when the nasal dilator is inserted in the carrying box. Thus, when the nasal dilator is advanced into the interior space, it snaps into the carrying box, will be secured when inserted and is thus prevented from falling down or out.

[0080] BRIEF DESCRIPTION OF THE DRAWINGS The following drawings are appended to facilitate the understanding of the invention. The drawings show embodiments of the invention, which will now be described by way of example only, where:

[0081] Figure 1 shows a nasal dilator in a perspective view.

[0082] Figure 2 shows the nasal dilator of Fig. 1 in a side view.

[0083] Figure 3 shows a nasal dilator with backwards inclined legs of the lower support sections in a side view.

[0084] Figure 4 shows the nasal dilator of Fig. 1 in a top view.

[0085] Figure 5 shows the nasal dilator of Fig. 1 in a front view.

[0086] Figure 6 shows the nasal dilator when in inserted in the nose in a front view of the nose.

[0087] Figure 7 shows the nasal dilator when in inserted in the nose in a bottom view of the nose.

[0088] Figure 8 shows a nasal dilator in a perspective view.

[0089] Figure 9 shows the nasal dilator of Figure 8 in a top view.

[0090] Figure 10 shows the nasal dilator of Figures 8 and 9 in a lateral view together with a carrying box.

[0091] Figures 11 to 13 show the nasal dilator of Figures 8 to 10 inserted in the nose of a user.

[0092] Figure 14 shows a nasal dilator in a top view.

[0093] Figures 15 to 18 show a further exemplary embodiment of a nasal dilator.

[0094] DETAILED DESCRIPTION OF THE INVENTION

[0095] Having generally described this invention, a further understanding can be obtained by reference to certain specific embodiments, which are provided herein for purposes of illustration only, and are not intended to limit the scope of the claims unless otherwise specified.

[0096] Figure 1 shows a first exemplary embodiment of a nasal dilator 10 in a perspective view. The nasal dilator 10 comprises a first and a second support frame 100, 200 (which may also be referred to as left and right support frames) for insertion into each of the nasal cavities 1 of the nose of a person. The nasal dilator 10 is to be worn for improving and / or maintaining an airway of the nasal passages. It is especially suitable for use during physical activity when breathing typically intensifies but may also be used during other daily activities . The two support frames 100, 200 are connected by a bridge element 300 which abuts the external end of the nose septum 2 (the columella) during use. The bridge element 300 restricts how far into the nasal cavities the support frames 100, 200 may be positioned.

[0097] The support frames 100, 200 are preferably identical to one another, the only distinction being their mirrored orientation, as the dilator 10 is symmetrical with respect to a central axis (Z) which in use is aligned with the septum 2 of the nose.

[0098] The dilator 10 is made up of sections of a strip of material which preferably is thin or slender, so as to take up as little space within the nasal cavities as possible and thus not restrict the available space for airflow through the nasal passages. The strip of material may be a wire or a similar slim, elongate member. In Figure 1, the dilator 10 is made up of various strips or sections with a circular profile, all connected to form a dilator with no free ends of the strips. To achieve this, the dilator 10 may for example be made by additive manufacturing or molding. In other embodiments, the dilator 10 may be made by bending a wire or a slim rod, e.g. of metal or plastic or a combination of the two, into the required shape, e.g. as shown in Fig. 1. The dilator would then have two free ends of the wire or rod after being bent. These ends may then be fastened to a section of the wire e.g. by gluing, welding or similar.

[0099] Each support frame 100, 200 comprises an upper or posterior support section 120, 220 and a lower or anterior support frame 110, 210 configured to support the upper and lower lateral cartilage, respectively. The upper or posterior support sections 120, 220 may be referred to as main part. The lower or lower or anterior support frames 110, 210 may also be referred to as stabilizing part. The upper and lower support sections 110, 120, 210, 220 have roof-like structure for supporting and / or expanding the nasal wings at the position of the support sections 110, 120, 210, 220 on each side and in the area between the support sections 110, 120, 210, 220 on each side when in use. The roof-like structures comprises vertically arranged (with respect to the base 11 of the dilator 10) first legs 110-L1, 120-L1, 210-L1, 220-L1 connected to an end of a curved or concave top portion 110-C, 120-C, 210-C, 220- C, and second legs 110-L2, 120-L2, 210-L2, 220-L2 connected to the opposite end of the respective top portions. The second legs are inclined with respect to the first legs, forming an angle a, P between them in a transverse plane of the dilator 10, wherein the transverse plane is a plane perpendicular to the central, longitudinal axis Z, the transverse plane extending laterally, i.e. left to right. The angle a between the first and second leg of the lower support sections 110, 210 is here equal to the angle P between the first and second leg of the upper support sections 120, 220 and is approximately between 30 and 50 degrees. In some embodiments, ref. Figure 3, the first leg 110-L1, 210-L1 may also be inclined posteriorly, such that the second end 110-E2, 210-E2 is arranged posteriorly, or closer to the upper support sections 120, 220 respectively, compared to the respective concave top portion 110- C, 210-C. This is advantageous to provide a good fit for noses having a slight rearwards inclined opening of the nostrils laterally.

[0100] A first longitudinal support member 130 is connected to and extends between the first end 110-E1 of the open curve of the lower support section 110 and the first end 120-E1 of the open curve of the upper support section 120 of the first support frame 100. Likewise, a first longitudinal support member 140 is connected to and extends between the first end 210-E1 of the open curve of the lower support section 210 and the first end 220-E1 of the open curve of the upper support section 220 of the second support frame 200.

[0101] A second longitudinal support member 140 is connected to and extends between the second end 110-E2 of the open curve of the lower support section 110 and the second end 120-E2 of the open curve of the upper support section 120 of the first support frame 100. Likewise, a second longitudinal support member 240 is connected to and extends between the second end 210-E2 of the open curve of the lower support section 210 and the second end 220-E2 of the open curve of the upper support section 220 of the second support frame 200.

[0102] The first and second longitudinal support members 130, 140, 230, 240 are here parallel. The first longitudinal support members 130, 230 may e.g. have a length in the range from 10-25mm. The second longitudinal support members 140, 240 may e.g. have a length in the range from 10-25mm.

[0103] When in use, the lower support sections 110, 210 may for example extend approximately 5- 10mm into the nasal cavities 1, and the upper support sections 120, 220 may for example extend approximately 15-30mm into the nasal cavities l.In order to make a proper, tight and comfortable fit, the dilator 10 may be made in various sizes. The overall dimensions may be made smaller or larger and / or some of the sections, e.g. the height of the support sections or the length of the second legs may be made smaller or larger.

[0104] In the context of the invention it is indicated that the legs 110, 120, 210, 220, as well as the second longitudinal support member 140 and 240 may also be referred to as “frame segments”.

[0105] Figure 2 shows the nasal dilator of Figure 1 in a side view, such that the first support frame 100 is visible. Here it can be seen that the second longitudinal support member 140 is in an elevated position compared to the first longitudinal member 130, the second longitudinal member 140, 240 having a height h3 (ref. Fig. 6). It can also be seen that the height hl of the lower support section 110 is smaller than the height h2 of the upper support section. The height hl, h2 here refers to the distance from the base 11 of the dilator 10 to the top of the top portion, as illustrated in Fig. 2. The heights hl, h2 are approximately equal to the length (or height) of the first leg 110-L1, 120-L1 plus the vertical height of the concave top portion 110-C, 120-C. Height hl may for example be in the range 7-18mm, while h2 may e.g. be in the range 10-20mm. Because the dilator 10 is symmetrical, the same features apply to the second support frame 200.

[0106] Here it can also be seen that the first longitudinal members 130, 230 may be arranged in the same plane as the bridge element 300.

[0107] The overall length of the dilator B including the bridge element 300 may e.g. be in the range 15-30mm. The length excluding the bridge element, length A, may e.g. be in the range 10-25mm. Length A will be approximately equal to the length of the first longitudinal members 130, 230 with the addition of the anterior -posterior thickness of the first legs 110-L1, 210-L1.

[0108] Figure 3 shows a nasal dilator 10 with backwards inclined second legs 110-L2, 210- L2 of the lower support sections 110, 210 in a side view. The second legs 110-L2, 210-L2 are inclined so that the second end 110-E2, 210-E2 is arranged further up or posteriorly compared to the concave portion 110-C, 210-C.

[0109] Figure 4 shows the nasal dilator of Fig. 1 in a top view.

[0110] The total lateral extension of the dilator, distance E, may e.g. be in the range 20- 40mm. The distance between the first longitudinal member 130 of the first support frame 100, and the first longitudinal member 230 of the second support frame 200, distance D, may e.g. be in the range 3 -10mm.

[0111] Figure 5 shows the nasal dilator of Fig. 1 in a front view. This figure shows the roof-like structure of the support sections 110, 120, 210, 220 which is intended to lie against the roof IF and the lateral wall 1W of the nasal cavity. The second legs 110-L2, 120-L2, 210-L2, 220-L2, the concave top portions 110-C, 120-C, 210-C, 220-C, and the second longitudinal support members 140, 240 provides the roof of the roof-like structure, while the first legs 110-L1, 120-L1, 210-L1, 220-L1 together with the first longitudinal support members 30, 230 provides the support for the roof.

[0112] Figure 6 shows the nasal dilator 10 when in inserted in the nose in a front view of the nose. It can be seen that the bridge element 300 is against the external end of the septum 2, the columella, and the support frames 100, 200 inserted into each of the nasal cavities 1 of the nose. It can also be seen that the dilator 10 is symmetrical across the central axis Z, which is aligned with the septum 2. Figure 7 shows the nasal dilator 10 when in inserted into each of the nasal cavities 1 of the nose in a bottom view of the nose. It can be seen that the open curve shape of the lower support sections 110, 210 lies against and supports the roof 1R and lateral wall 1W of each of the nasal cavities 1. The second leg 110-L2, 210-L2 may be straight or slightly concave to follow the shape of the lateral wall 1 W of the nasal cavity. Although not visible from bottom view, also the upper support sections 120, 220 lies against and supports the roof 1R and lateral wall 1W of each of the nasal cavities 1 , at a location further up or posterior with respect to the lower support sections 110, 210. The second leg 120-L2, 220-L2 may also be straight or slightly concave. The second legs 110-L2, 210-L2 of the lower support sections 110, 210 are here arranged in the same transverse plane as the first leg 110 -LI, 210-L1.

[0113] Figure 7 also illustrates the mutual angle a between the first leg 110 -LI , 210-L1 and the second leg 110-L2, 210-L2.

[0114] The nasal dilator 10 may for example be made of metal or plastic, or a combination of the two.

[0115] Figure 8 shows a nasal dilator 400 in a perspective view. The nasal dilator 400 has a first support frame 402 and a second support frame 404 for insertion into the left and right nasal cavities 1. A bridge element 406 connects the first support frame 402 and the second support frame 404. The bridge element 406 is configured for abutment against the external end of the nose septum, as will be apparent from Figures 11 to 13. Both the first support frame 402 and the second support frame 404 are configured to extend from the bridge element 406 through a nostril into a posterior section of the respective nasal cavity 1 when inserted into the nose.

[0116] Both the first support frame 402 and the second support frame 404 comprise a main part 408 and 410 as well as a stabilizing part 412 and 414. The main parts 408 and 410 have a laterally outwards extending curved area 416 spanned and delimited by a plurality of frame segments 418a, 418b, 418c and 418d. In this exemplary embodiment, the frame segments 418a to 418d are substantially elongated and form a closed polygonal shape, which in this case is substantially trapezoidal. The area 416 is delimited by the frame segments 418a to 418d and is designed to abut an interior wall of the nasal cavity 1, into which the respective support frame 402 or 404 is inserted.

[0117] The surface normals 420 and 422 of the surface areas 416 enclose an angle between 45 to 90°, so that the two areas 416 are inclined in directions facing away from each other, thereby leading to dilating forces of the main parts 408 and 410 into two opposite lateral directions and upwards.

[0118] For providing a counterforce, the stabilizing parts 412 and 414 are placed at a distance to the main parts 408 and 410 and allow abutment of the nasal cavity floor IF, i.e. from the septal columella along the nasal vestibular floor. Thus, the force exerted onto the wings of the nose is supported by the nasal cavity floor IF.

[0119] As apparent from Figure 8, the frame segments 418a to 418b form a posterior section 424 or 426, respectively. The respective posterior section 424 and 426 is supported on an end of an elongated anterior section 428 and 430, respectively, which end is facing away from the bridge element 406. The main parts 410 and 412 thus have the shape of the letter P when projected onto a plane. The anterior section 428 or 430 and the first frame segment 418a form the stem of the letter P, while the other frame segments 418b to 418d form an approximately semi-circular part of the letter P that attaches to the stem. As apparent from the Figures, the approximately semi-circular part of the letter P is bent relative to the anterior section 428 or 430.

[0120] A bending process is described to explain the resulting shape. It is assumed that the anterior section 428 or 430 and the first frame segment 418a initially form a continuous, straight line. The other three frame segments 418b to 418d extend laterally outwards to the side of the first frame segment 418a. The anterior section 428 or 430 and the first frame segment 418a are defined as the Y-axis. The other three frame segments 418b to 418d extend from the first frame segment 418a both along the Y-axis and along an X-axis transverse to the anterior section 428 or 430. To obtain the shape of the main part as shown in Figure 8, the coherent arrangement of the frame segments 418a to 418d is swivelled or bent around the X-axis at the outer end of the anterior section 428 or 430, where the first frame segment 418a is attached. A respective swivelling or bending angle y, which is also apparent from Fig. 10, could, for example, be up to 60°.

[0121] Figure 9 shows a top view of the nasal dilator 400. It is apparent that the anterior section 428 and 430 as well as the first frame segments 418a of both support frames 402 and 404 are substantially parallel to each other. The first frame segments 418a of both support frames 402 and 404 are arranged at a distance D to each other, which may correspond to the distance D shown in the first exemplary embodiment depicted in Figure 4. Thus, it may be in a range of, for example, 3-10mm.

[0122] The bridge element 406 may be slightly curved to adapt to the curved shape of the septum of the nose. A transition between the bridge element 406 and the two support frames 402 and 404 is exemplarily smoothly rounded on an inner side and on an outer side to provide a comfortable fit.

[0123] The frame segments 418a are exemplarily substantially straight. However, the posterior frame segment 418b as well as the lateral frame segment 418c are exemplarily slightly curved. For example, the posterior frame segment 418b is curved towards the bridge element 406 and towards the respective stabilizing part 412 or 414. The junctions between all frame segments 418a to 418d are smoothly rounded on an inner side and an outer side. The trapezoidal shape of the frame segments 418a to 418d tapers in a lateral outward direction. The first frame segment 418a and the third, i.e. lateral, frame segment 418c are substantially parallel to each other.

[0124] The stabilizing part 412 or 414 has a rounded end 432 to provide a comfortable fit in the nasal cavity 1. Starting from the bridge element 406 and running in a posterior direction, the stabilizing parts 412 and 414 decrease their distance. By inserting the nasal dilator 400 into the nose they may be urged away from each other through the nose septum 3 and thus provide a clamping function.

[0125] The nasal dilator 400 is exemplarily made as one-piece from a plastic material. The material may be sufficiently rigid to maintain its general shape throughout the lifetime. It may, however, be sufficiently flexible to allow an adaption of its shape to the cavities of the nose.

[0126] Figure 10 shows the nasal dilator 400 in a lateral view. The anterior sections 428 and 430 enclose an angle with the respective stabilizing part 412 or 414, which is smaller than the angle y, for example in a range of 25 to 80°.

[0127] The nasal dilator 400 may be placed in a carrying box 434, which has a closable lid 436 and an interior space 438 for receiving the nasal dilator 400. Thus, a user may carry the nasal dilator 400 thus safely and in hygienic packaging.

[0128] Figures 11 to 13 show the nasal dilator 400 inserted in the nose of the user. The bridge element 406 is placed against the external end of the septum 2, the columella, and the support frames 402 and 404 are inserted into each of the nasal cavities 1 of the nose. It can also be seen that the dilator 400 is symmetrical across a central axis Z, which is aligned with the septum 2.

[0129] Figure 14 shows a nasal dilator 440 in a top view. The general shape and design of the nasal dilator 440 corresponds to the nasal dilator 400 shown in the previous figures. It has a first support frame 442 and a second support frame 444. However, it has posterior sections 446 and 448 in main parts 450 and 452, which are placed slightly further laterally. Thus, the distance D between the first frame segments 418a of both support frames 442 and 444 may be placed in an upper range of or exceed the range of 3-10 mm.

[0130] Figures 15 to 18 show a slightly modified exemplary embodiment of a nasal dilator 500.

[0131] Figure 15 shows the nasal dilator 500 in a perspective view. The nasal dilator 500 has a first support frame 502 and a second support frame 504 for insertion into the left and right nasal cavities. A bridge element 506 connects the first support frame 502 and the second support frame 504. Both support frames 502 and 504 extend from the bridge element 506 through a nostril into a posterior section of the respective nasal cavity, when the nasal dilator 500 is inserted into the nasal cavities. Similar to the previous figures, the first support frame 502 has a first main part 508, while the second support frame 504 has a second main part 510. The main parts 508 and 510 each have a laterally outwards extending curved area 516 spanned by frame segments 518a, 518b, 518c, and 518d, forming a trapezoidal shape.

[0132] In analogy to the nasal dilator 400, the nasal dilator 500 has two stabilizing parts 512 and 514. The stabilizing parts 512 and 514 are placed at a distance to the main parts 508 and 510 and allow abutment of the nasal cavity floor IF, i.e. from the septal columella along the nasal vestibular floor. They are used for providing a counterforce. Thus, the force exerted onto the wings of the nose is supported by the nasal cavity floor IF.

[0133] Figure 16 shows a top view of the nasal dilator 500. Lateral outer sides of the anterior sections 528 and 530 are curved outwards. The first frame segments 518a of both support frames 502 and 504 are curved inwards. The bridge element 506 is slightly curved outwards to adapt to the septum's shape. The frame segments 518a to 518d are smoothly rounded, and the trapezoidal shape tapers outward. The first frame segment 518a and the lateral frame segment 518c are substantially parallel.

[0134] Approximately in the center of the interior sides of the anterior sections 528 and 530, rounded kinks 529 and 531 are provided. The part between the bridge element 506 and the kink 529 or 531 is curved inwards, i.e. towards the septum. The distance between the kinks 529 and 531 is lower than the width of the interior side of the bridge element 506. The interior sides of the bridge-sided parts of both anterior sections 528 and 530 enclose an angle 5 at the kinks 529 and 531 of about 45°. The other parts of the anterior sections 528 and 530 enclose an angle E at the kinks 529 and 531 of about 60°. The support of the nasal dilator 500 at the septum is improved through the narrowed section between the kinks 529 and 531.

[0135] Figure 17 shows a rear view of the nasal dilator 500. The stabilizing parts 512 and 514 have a rounded end 532 for a comfortable fit. They decrease their distance from the bridge element 506 in a posterior direction and provide a clamping function when inserted into the nose. In analogy to Figure 8, surface normals 520 and 522 of the surface areas 516 enclose an angle between 45 to 90°, so that the two areas 516 are inclined in directions facing away from each other, thereby leading to dilating forces of the main parts 508 and 510 into two opposite lateral directions and upwards.

[0136] Figure 18 shows a lateral view of the nasal dilator 500. The frame segments 518a to 518d form posterior sections 524 and 526, supported by the substantially elongated anterior sections 528 and 530, respectively, which face away from bridge element 506. The main parts 510 and 512 resemble the letter P when projected onto a plane. The anterior sections 528 or 530 and first frame segment 518a form the stem, while frame segments 518b to 518d form the semi-circular part of the P, “bent” relative to the anterior section 528 or 530.

[0137] As above, the anterior section 528 or 530 and the first frame segment 518a may be imagined as forming a straight line initially, after which the semi-circular part of the P is bent. Frame segments 518b to 518d extend laterally from the frame segment 518a. Anterior sections 528 or 530 and 518a define the Y-axis, while the frame segments 518b to 518d extend along the Y-axis and X-axis. To achieve the shape in Figure 18, frame segments 518a to 518d are “bent” around the X-axis at the end of anterior sections 528 or 530, with a bending angle y up to 60°.

[0138] The anterior sections 528 and 530 enclose an angle with the stabilizing parts 512 or 514, smaller than the angle y, for example, in a range of 25 to 80°. The nasal dilator 500 is made as one piece from a plastic material, rigid yet flexible enough to adapt to the nasal cavities.

[0139] In Figs. 15 to 18, a magnet cavity 534 is shown. The magnet cavity 534 is arranged within the bridge element 506 and is configured to receive a magnet or a magnetic element. A carrying box 434 that is adapted to the shape of the nasal dilator 500 exemplarily comprises a corresponding magnetic element or magnet. When the nasal dilator 500 is placed in the carrying box 434, the magnet or magnetic element inside the magnet cavity 534 and the magnetic element or magnet in the carrying box 434 attract each other, such that the nasal dilator 500 is held in the interior space 438 of the carrying box 434. When approaching the interior space 438 of the carrying box 434, the nasal dilator 500 will snap into the carrying box 434, and not fall out when placed there. A remaining part of the magnet cavity 534 that is not filled by the magnet or magnetic element will be filled with another material, such as a plastic material in form of a plug, or a hardenable or curable material. The magnet cavity 534 will thus preferably not be visible on the outside of the nasal dilator 500.

[0140] In the preceding description, various aspects of the independent claims have been described. For purposes of explanation, specific numbers and configurations were set forth in order to provide a thorough understanding of the invention and its workings. However, this description is not intended to be construed in a limiting sense. Various modifications and variations of the illustrative embodiment, as well as other embodiments of the invention, which are apparent to persons skilled in the art to which the disclosed subject matter pertains, are deemed to lie within the scope of the present invention as defined in the attached claims. LIST OF REFERENCE NUMBERS

[0141] Reference Description No.

[0142] 1 Nasal cavity IF Nasal cavity floor 1LW Lateral wall of nasal cavity 1MW Medial wall of nasal cavity 1R Roof of nasal cavity 2 10 Nasal dilator 11 Base 100 Support frame 110 Lower support section 110-C Concave portion 110-E1 First end 110-E2 Second end 110 -LI First leg 110-L2 Second leg

[0143] 120 Upper support section 120-C Concave portion 120-E1 First end 120-E2 Second end 120-L1 First leg 120-L2 Second leg

[0144] 130 First longitudinal member 140 Second longitudinal member

[0145] 200 Support frame

[0146] 210 Lower support section

[0147] 210-C Concave portion

[0148] 210-E1 First end

[0149] 210-E2 Second end

[0150] 210 -LI First leg

[0151] 210-L2 Second leg

[0152] 220 Upper support section

[0153] 220-C Concave portion 220-E1 First end

[0154] 220-E2 Second end

[0155] 220-L1 First leg

[0156] 220-L2 Second leg

[0157] 230 First longitudinal support member

[0158] 240 Second longitudinal support member

[0159] 300 Bridge element

[0160] 400 Nasal dilator

[0161] 402 first support frame

[0162] 404 second support frame

[0163] 406 bridge element

[0164] 408 main part

[0165] 410 main part

[0166] 412 stabilizing part

[0167] 414 stabilizing part

[0168] 416 curved area

[0169] 418a-418d frame segment

[0170] 420 surface normal

[0171] 422 surface normal

[0172] 424 posterior section

[0173] 426 posterior section

[0174] 428 anterior section

[0175] 430 anterior section

[0176] 432 rounded end

[0177] 434 carrying box

[0178] 436 closable lid

[0179] 438 interior space

[0180] 440 nasal dilator

[0181] 442 first support frame

[0182] 444 second support frame

[0183] 446 posterior section

[0184] 448 posterior section

[0185] 450 main part

[0186] 452 main part

[0187] 500 Nasal dilator

[0188] 502 First support frame

[0189] 504 Second support frame

[0190] 506 Bridge element 508 First main part

[0191] 510 Second main part

[0192] 512 First stabilizing part

[0193] 514 Second stabilizing part

[0194] 516 Laterally outwards extending curved area

[0195] 518a First frame segment

[0196] 518b Second frame segment

[0197] 518c Third frame segment

[0198] 518d Fourth frame segment

[0199] 520 Surface normal

[0200] 522 Surface normal

[0201] 524 First posterior section

[0202] 526 Second posterior section

[0203] 528 First anterior section

[0204] 529 First rounded kink

[0205] 530 Second anterior section

[0206] 531 Second rounded kink

[0207] 532 Rounded end of stabilizing parts

[0208] 534 Magnet cavity a angle (between first and second leg of lower support sections)

[0209] P angle (between first and second leg of upper support sections) y angle (between first frame segment and outer end of anterior section)

[0210] 5 angle between bridge-sided parts of anterior section at kink

[0211] E angle between outer parts of anterior section at kink

Claims

CLAIMS1. Nasal dilator (10, 400, 440, 500), comprising a first support frame (100, 402, 442, 502) and a second support frame (200, 404, 444, 504) for insertion into left and right nasal cavities (1), and a bridge element (300, 406, 506), wherein the bridge element (300, 406, 506) connects the first support frame (100, 402, 442, 502) and the second support frame (200, 404, 444, 504), wherein the bridge element (300, 406, 506) is configured for abutment against the external end of the nose septum, wherein each of the first support frame (100, 402, 442, 502) and the second support frame (200, 404, 444, 504) is configured to extend from the bridge element (300, 406, 506) through a nostril into a posterior section of the respective nasal cavity (1) when the nasal dilator (10, 400, 440, 500) is in use, wherein each of the first support frame (100, 402, 442, 502) and the second support frame (200, 404, 444, 504) comprises a main part (120, 220, 408, 410, 450, 452, 508, 510) and a stabilizing part (110, 210, 412, 414, 512, 514), the main part (120, 220, 408, 410, 450, 452, 508, 510) having a planar or curved area spanned by a plurality of frame segments (418a, 418b, 418c, 418d, 518a, 518b, 518c, 518d) forming a continuous delimiting edge for supporting the nasal wings, and the stabilizing part (110, 210, 412, 414, 512, 514) having a longitudinal support member (130, 230, 412, 414, 512, 514) for arrangement on the nasal vestibular floor, and wherein the main part (120, 220, 408, 410, 450, 452, 508, 510) and the stabilizing part (110, 210, 412, 414, 512, 514) are arranged at a distance to each other.

2. The nasal dilator (10, 400, 440, 500) according to claim 1, wherein the main part (120, 220, 408, 410, 450, 452, 508, 510) is an upper support section (120, 220), wherein the stabilizing part (110, 210, 412, 414, 512, 514) is a lower support section (110, 210), wherein the upper and lower support sections (110, 120, 210, 220) each comprise an open curve shape with a first end (110-E1, 120-E1, 210-E1, 220-E1) and a second end (110-E2, 120-E2, 210-E2, 220-E2), wherein each support frame (100, 200) comprises a first longitudinal support member (130, 230) extending between the first end (110-E1, 210-E1) of the lower support section (110, 210) and the first end (120 -El, 220-E1) of the upper support section (120, 220) of the respective support frame (100, 200), the first longitudinalsupport member (130, 230) being arranged for supporting against the nasal cavity floor (IF) and / or the medial wall (1MW) when in use, and wherein each support frame (100, 200) comprises a second longitudinal support member (140, 240) extending between the second end (110-E2, 210-E2) of the lower support section (110, 120) and the second end (120-E2, 220-E2) of the upper support section (120, 220) of the respective support frame (100, 200), the second longitudinal support member (140, 240) being arranged for supporting against the lateral wall (1LW) of the nasal cavity (1) when in use.

3. The nasal dilator (10, 400, 440, 500) according to claim 2, wherein the bridge element (300) is attached to each of the lower support sections (110, 210).

4. The nasal dilator (10, 400, 440, 500) according to claim 2 or 3, wherein the open curve shape of each of the upper and lower support sections (110, 120, 210, 220) comprises a first leg (110-L1, 120-L1, 210-L1, 220-L1) for support against the nasal cavity medial wall (1MW), a second leg (110-L2, 120-L2, 210-L2, 220-L2) for support against the nasal cavity lateral wall (1LW), and a concave portion (110-C, 120-C, 210-C, 220-C) connecting the first and second legs, the concave portion being for support against the nasal cavity roof (1R).

5. The nasal dilator (10, 400, 440, 500) according to any of claims 2 to 4, wherein for each of the support frames (100, 200) the height (hl) of the lower support section (110, 210) is smaller than the height (h2) of the upper support section (120, 220).

6. The nasal dilator (10, 400, 440, 500) according to any of claims 2 to 5, wherein the position of the second longitudinal support member (140, 240) is elevated compared to the position of the first longitudinal support member (130, 230) with respect to the floor of the nasal cavity (IF) when in use.

7. The nasal dilator (10, 400, 440, 500) according to any of claims 2 to 6, wherein the second leg (110-L2, 120-L2, 210-L2, 220-L2) of the upper support section (120, 220) and / or lower support section (110, 210) of each support frame (100, 200) is shorter than the respective first leg (110-L1, 120-L1, 210-L1, 220-L1).

8. The nasal dilator (10, 400, 440, 500) according to any of claims 2 to 7, wherein the second leg (110-L2, 120-L2, 210-L2, 220-L2) of the upper support section (120, 220) and / or of the lower support section (110, 210) of each support frame (100, 200) is arranged at an angle relative to the respective first leg (110-L1, 120-L1, 210-L1, 220-L1), said angle being more than 20 and less than 75 degrees.

9. The nasal dilator (10, 400, 440, 500) according to any of claims 2 to 8, wherein the first longitudinal support member (130, 230) and the second longitudinal support member (140, 240) of each of the support frames (100, 200) are parallel.

10. The nasal dilator (10, 400, 440, 500) according to any of claims 2 to 9, wherein the second leg (110-L2, 120-L2, 210-L2, 220-L2) of the upper support section (120, 220) and / or of the lower support section (110, 210) of each support frame (100, 200) is straight or concave.

11. The nasal dilator (10, 400, 440, 500) according to claim 1, wherein the plurality of frame segments (418a, 418b, 418c, 418d, 518a, 518b, 518c, 518d) forms a closed delimiting edge.

12. The nasal dilator (10, 400, 440, 500) according to claim 11, wherein the closed delimiting edge has a substantially trapezoidal shape.

13. The nasal dilator (10, 400, 440, 500) according to claim 11 or 12, wherein the main part (120, 220, 408, 410, 450, 452, 508, 510) comprises an elongated anterior section (428, 430, 528, 530), to which a posterior section (424, 426, 446, 448, 524, 526) is attached, wherein the closed delimiting contour is formed by the posterior section (424, 426, 446, 448, 524, 526).

14. The nasal dilator (10, 400, 440, 500) according to claim 13, wherein one of the frame segments (418a, 418b, 481c, 418d, 518a, 518b, 518c, 518d) forms a main posterior frame segment (418a, 518a) to which the other frame segments (418b, 418c, 418d, 518b, 518c, 518d) are attached, and wherein the main posterior frame segment (418a, 518a) and the anterior section (428, 430, 528, 530) enclose an angle of 10 to 45°.

15. The nasal dilator (10, 400, 440, 500) according to any of the claims 13 or 14, wherein the anterior section (428, 528) of the first support frame (402) and the anterior section (430, 530) of the second support frame (404, 504) are substantially parallel to each other.

16. The nasal dilator (10, 400, 440, 500) according to any of the claims 13 to 15, wherein the main posterior frame segment (418a, 518a) of the first support frame (402, 502) and the main posterior frame segment (418a, 518a) of the second support frame (404, 504) are substantially parallel to each other.

17. The nasal dilator (10, 400, 440, 500) according to any of the claims 13 to 16, wherein the posterior section (424, 524) of the first support frame (402, 502) andthe posterior section (426, 526) of the second support frame (404, 504) are extending away from each other.

18. The nasal dilator (10, 400, 440, 500) according to any of the preceding claims, wherein the nasal dilator (10, 400, 440, 500) is formed as one piece.

19. The nasal dilator (10, 400, 440, 500) according to any of the preceding claims, manufactured by additive manufacturing or by molding.

20. A method of manufacturing a nasal dilator (10, 400, 440, 500) according to any of the claims 1 to 19 using additive manufacturing or molding.

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