fig1 illustrates an embodiment of a nasal insert that includes upwardly spiraling support member or strut 12 extending between top ring 10 and bottom ring 11 . the top ring may have a diameter d 1 or other transverse measure that is smaller than a diameter d 2 or other transverse measure of the bottom ring . fig2 , 5 , 5a , and 6 - 10 show various other embodiments of nasal inserts with spirally - or helically - oriented support member ( s ). the various constituent parts of a nasal insert may be made from different materials and / or have different stiffnesses . nasal insert constituent parts may be formed from a first material that is partially or completely encapsulated in or coated by a second material . while it may be preferable that the surfaces of the insert that contact nasal surfaces are made of soft plastics or polymers , inserts may also be made of metals , plastics , and / or polymers . for example , a nasal insert may have constituent part ( s ) made from a relatively stiff material coated with a relatively soft and / or pliable material . in some embodiments , constituent part ( s ) of an insert may be made from one or more pliable or flexible materials , that range in instantaneous hardness , as rated by astm d - 2240 , from shore 00 to shore d 90 . certain portions of constituent part ( s ) of an insert may be made from one material durometer , while others may be made from two . for example , the bottom ring may be stiffened with the addition of an inner hoop or stiffening ring of a first instantaneous hardness astm d - 2240 value material that is over molded or embedded in a second different instantaneous hardness astm d - 2240 value material , while the rest of the insert is made from either the same instantaneous hardness astm d - 2240 value material as the second material , or from a third instantaneous hardness astm d - 2240 value material different from the first and second materials . in some embodiments , the materials may be bio - absorbable and / or biodegradable materials . the insert may be placed in the nose to aid correct structural growth or during or following surgery to stent the airway open to aid healing . placed in such a way , an insert made of bio - absorbable or biodegradable materials will absorb and / or disappear over time eliminating the need to surgically remove it . if two or more flexible materials are used to form a constituent part of a nasal insert , they may be bonded chemically , mechanically , or chemically and mechanically to one another . similarly , if different constituent parts of a nasal insert are made from different materials ( or different combinations of materials , such as when two constituent parts have certain material ( s ) in common and certain material ( s ) not in common ) they may be bonded , chemically , mechanically or chemically and mechanically to one another . the support member 12 may be made from a material that is selected for its elastic properties so that support member 12 may serve as a spring mechanism between one or more tubular elements , 10 and 11 . the support member may contain a stiffening element embedded or over molded inside to provide vertical support . this member may be made with two distinct materials . the tubular elements may be made from a third , distinct , material . fig2 illustrates a second embodiment where the spiral support member 20 , which may contain a stiffening element to provide vertical support , serves as a spring mechanism for one tubular element 21 , which has openings through the wall , and may be made with the first material , or with a second , distinct , material . the spiral support member , as with other constituent parts , may be embedded inside or overmolded with a less stiff material . fig3 illustrates a third embodiment where the spiral support member 30 made of a first material , serves as a spring mechanism for one tubular element 32 that may be made with the first material , or with a second , distinct , material . fig5 illustrates an insert having two tubular elements 54 and 56 , supported by two spiral support members 50 and 52 . the insert may also include a filter , such as conical filter 58 , shown in fig5 a . the filter may be affixed to the insert in a variety of ways , such as by snap - fitting , press - fitting , interference fit , integral formation , etc . the insert and filter may define groove ( s ) and complementary ridge ( s ). the spiral support members may wrap in the same direction and may be placed opposed to one another in connecting to the first tubular element , such as shown in fig5 . the first material may be an inner ring which may have an interruption as illustrated in fig4 ( top view ) 40 and fig4 a ( side view ), that may have two or more protrusions 42 ( outward - facing ), 43 ( inward - facing ), and / or one or more holes 44 through the ring . fig4 b illustrates an embodiment of an inner ring 48 embedded in an outer material 49 , in a manner such that the inner facing surface of the inner ring is exposed 46 . this inner surface can define one or more grooves 47 . fig8 illustrates an example of a fig4 inner ring integrated into a nasal insert , in which the protrusions on the inner ring are mechanically and chemically bonded to the second material , and appear on the outer surface at anchor holes 80 . the first material ( i . e ., the stiff core ) may also be a vertically oriented support member that may wrap upwards in a circular direction to form a series of curves or one or more helixes ( element 60 in fig6 ; element 70 in fig7 ). fig9 shows cores 90 embedded in helical support members with anchor holes or protrusions at the start 92 , end 94 , or mid points as necessary . the first material may have ring , spiral , horizontal or vertical parts that are formed as one part or are formed as separate parts and then assembled , as demonstrated in fig1 . resilient — capable of returning to an original shape or position , as after having been compressed . spiral —( a ) a curve on a plane that winds around a fixed center point at a continuously increasing or decreasing distance from the point ; ( b ) a three - dimensional curve that turns around an axis at a constant or continuously varying distance while moving parallel to the axis ; a helix , such as a cylindrical or conic helix . helix — a three - dimensional curve that lies on a cylinder or cone , so that its angle to a plane perpendicular to the axis is constant . fig1 - 17 depict exemplary embodiments of nasal inserts having non - ridge - containing protrusion ( s ). including a protrusion on an insert may aid in reshaping the nasal air space , through gentle outwardly facing pressure by the insert on the nasal pathway , to allow greater airflow to be inhaled through the nasal pathway . the protrusions ( nodules ) may be located on any surface of the nasal insert . the one or more protrusions may be custom - positioned on the insert to facilitate a refined and personal fit . as shown in fig1 - 13 and 16 - 17 , a nasal insert may include one or more nodules ( rounded , non - ridge containing protuberances ) 112 ( fig1 ) and 124 ( fig1 ). a nodule or protuberance may be shaped like half of a pear that is cut in the longitudinal or latitudinal plane , or as a button , a rounded plane , as a semisphere or hemisphere , or as other rounded shapes . nodules may be convex as shown , or concave , or both , as desired to conform to or interface with nasal mucosa . nodules may be integrally formed in a nasal insert or may be formed as a separate part and assembled ( fig1 ). the nodule may be formed from a material having a different durometer than that of the nasal insert . the nodule may be softer than the material of the nasal insert . the nodule may include or contain a magnet . such a magnet may be sized , shaped , positioned , and / or provided with sufficient magnetic strength so that it may attract a second magnet included in or contained in the nodule of a second nasal insert , or included in or contained in an exterior tabular element . the nodule ( s ) may be integrated or formed separately in a varying array of nodule shapes 112 , 122 and may protrude at varying slopes so as to allow for maximum customization . nodules formed separately may be made part of a nasal insert kit for an individual &# 39 ; s selection . the nodules may attach with a self - securing mechanism 123 , which may be fitted through one or more through - wall openings or receptacles 121 . customization and comfort may be enhanced and this permits a more affordable method to customize the nasal insert for improved function and comfort . the nasal insert with the nodules may be formed so that they are connected by a member that originates from the inner surface wall , as shown in cross section fig1 , 150 of the tubular element , and extends distal from the tubular element fig1 , 130 and then through a rounded or angular corner 132 continues across a width at least double the span of the tubular elements diameter 134 where a mirrored rounded or angular corner 136 then returns the connecting member to the second tubular element on the inner surface wall . in use , the tubular elements may be rotated 180 degrees upward , so that the connecting member 140 turns around and forms a loop 142 . the ends 150 of the connecting member may originate inside the tubular element as demonstrated in fig1 in a profile drawing . fig1 , 16a , 17 , and 18 show another embodiment , in which the tubular elements may include a tabular member 160 , 170 that is designed in the shape of an arc . the tabular member may be so sized and shaped as to capture the nasal alar 180 , thereby helping to secure the tubular member in the nose . the features described herein may be combined with the various features described in u . s . patent application ser . no . 11 / 290 , 047 , filed nov . 30 , 2005 , u . s . patent application ser . no . 10 / 842 , 220 , filed may 10 , 2004 , u . s . patent application ser . no . 10 / 434 , 669 , filed may 9 , 2003 , and u . s . patent application ser . no . 09 / 862 , 966 , filed may 22 , 2001 , now u . s . pat . no . 6 , 562 , 057 , which are incorporated by reference herein for such teachings . for example , the nasal inserts described herein may include tabs , connecting members , filters , intranasal drug coating / delivery , interrupted members , shapes , and other features as described in the cited references .
devices for nasal insertion may include an open - ended tubular element which extends along a central tube axis between a first end and a second end , the first end being larger than the second end , and in which the tubular element includes at least one spiral strut extending from the first end to the second end , and / or a nodule having an internal face , a rounded external face , and a stalk extending from the internal face and terminating in an anchor sufficiently larger than a receptacle in the tubular element and sufficiently deformable as to be pressed through the receptacle to affix the nodule to the tubular clement .