DISPENSER

Abstract

A dispenser (1) of liquids for medical uses wherein a first membrane body (10) is shaped symmetrically with respect to a first frontal median plane (M) and to a second sagittal median plane (N) intersected in a central axis (A) and is delimited at the top by a dome (12) which is axially delimited by a base portion (12′) and by a top (12″) of given shape; a second body (20) being carried by the first body (10) inside the dome (12) in a position concentric with the axis (A); the second body (20) having a hollow lower portion (22) concentric with the axis (A) and an upper portion (28) engaged by a first and a second duct (280) (280′) terminating in the dome (12), with a first nozzle (2800′) (2800) and a second nozzle (2800′) respectively; each first and second nozzle (2800) (2800′) being arranged between the first frontal median plane (M) and the second sagittal median plane (N).

Claims

1. A gravity feed dispenser (1) of liquid for medical uses wherein a first membrane body (10) has at the top a dome (12) axially delimited by a base portion (12′) and by a top (12″) of given shape provided with a central axis positioned at the intersection of a first frontal median plane (M) and a second sagittal median plane (N); a second body (20) being carried internally by said first body (10); said second body (20) having a hollow lower portion (22) concentric with said central axis (A) and an upper portion (28) engaged by a first duct (280) and by a second duct (280′), both terminating in said dome (12), with a first nozzle (2800) and a second nozzle (2800′) respectively; characterized in that said first and second ducts (280)(280′) have respective terminal sections (2822)(2822′) which terminate in said first and second nozzles (2800)(2800′) with outlet direction which, moving away from said first frontal median plane (M), is distanced point by point from said second sagittal median plane (N) by a length greater than the distance of the corresponding said first and second nozzles (2800)(2800′) from said second sagittal median plane (N).

2. The dispenser according to claim 1, characterized in that said first and second nozzles (2800)(2800′) are arranged at the same radial distance from said central axis (A).

3. The dispenser according to claim 1, characterized in that each said first and second duct (280)(280′) have in sequence a first cylindrical portion (2802)(2802′), a trapezoidal narrowing (2820)(2820′) and a substantially cylindrical terminal section (2822)(2822′) inclined with respect to said first frontal median plane (M).

4. The dispenser according to claim 3, characterized in that each said first and second duct (280)(280′) has an intermediate section (2824)(2824′) arranged between said narrowing (2820)(2820′) and said terminal section (2822)(2822′).

5. The dispenser according to claim 4, characterized in that each said terminal section (2822)(2822′) is parallel to said second sagittal median plane (N).

6. The dispenser according to claim 4, characterized in that each said terminal section (2822)(2822′) is inclined with respect to said second sagittal median plane (N).

7. The dispenser according to claim 1, characterized in that said top (12″) is faceted and has a central flat portion (120) transversal to said axis (A) and four faces (122)(124) which extend from said flat portion (120) around said axis (A); two first faces (122) of said four faces (122)(124) having the same shape and extension, in addition to being arranged symmetrically with respect to said first frontal median plane (M) and two faces (124) of said four faces (122)(124) having equal shape and extension, in addition to being arranged symmetrically with respect to said second sagittal median plane (N).

8. The dispenser according to claim 7, characterized in that each of said first and second nozzles (2800)(2800′) are obtained in each of said second faces (124) at the back of a respective outer edge.

9. The dispenser according to claim 1, characterized in that said upper portion (28) is engaged by a third duct (280″) concentric with said central axis (A); said third duct (280″) terminating in a third nozzle (2800″) obtained in said central flat portion (120).

10. The dispenser according to claim 1, characterized in that said third duct (280″) extends inside said lower portion (22); said first, second and third ducts (280)(280′)(280″) extend from said base portion (12′) to said top (12″).

11. The dispenser according to claim 10, characterized in that said upper portion (28) carries a cylindrical portion (27) concentric with said axis (A) and contained inside said lower portion (22) to define with the latter an axial cylindrical guide (270) for an end portion (EP) of a cylindrical supply duct (CC) of said liquid.

12. The dispenser according to claim 11, characterized in that said cylindrical portion (27) has an outer shell (270) provided with two longitudinal grooves (272) coaxial with said first and second ducts (280)(280′) to define, in use, a supply channel (282)(282′) for each said first and second ducts (280)(280′) when said end portion (EP) of said cylindrical duct (CC) couples with said cylindrical guide (270).

13. The dispenser according to claim 1, characterized in that said lower portion (22) is hollow and is provided with a central chamber (220) concentric with said axis (A).

14. The dispenser according to claim 1, characterized in that said lower portion (22) is hollow and is provided with a common central chamber (220′) for feeding said first, second and third ducts (280)(280′)(280″).

15. A dispensing set comprising a bag (S) for medical liquid and provided with a dispensing outlet (BE) for said liquid; a flexible tube (CF) being connected to said dispensing outlet (BE) in a fluid-tight manner; characterized in that said flexible tube (CF) has one end (E) connected to a dispenser (1, 1′, 1″, 1′″, 1″″) according to claim 1.

16. The set according to claim 15, characterized in that said bag contains said medical liquid.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0044] The invention will be better described with reference to some non-limiting embodiments in the attached figures, in which:

[0045] FIG. 1 is a plan view of a first preferred embodiment of a dispenser according to the present invention;

[0046] FIG. 1a is a schematic view of a set which comprises a dispenser according to the present invention;

[0047] FIG. 1b is a schematic view of the set of figure A in a preferred mode of use;

[0048] FIG. 2 is a view from below of FIG. 1;

[0049] FIG. 2a illustrates a diagram referred to in the description with reference to the use of FIG. 1;

[0050] FIG. 3 is a lateral elevation view of FIG. 1;

[0051] FIG. 4 is a frontal elevation view of FIG. 1;

[0052] FIG. 5 is a sectional view according to the line V-V of FIG. 3;

[0053] FIG. 6 is a schematic perspective view from below of FIG. 5;

[0054] FIG. 7 is a sectional view according to the line VII-VII of FIG. 2;

[0055] FIG. 8 is a schematic perspective view from below of FIG. 7;

[0056] FIG. 9 is a sectional view according to the line IX-IX of FIG. 4;

[0057] FIG. 10 is a schematic perspective view from below of FIG. 9;

[0058] FIG. 11 is a sectional view according to the line XI-XI of FIG. 4;

[0059] FIG. 12 is a schematic perspective view from below of FIG. 11;

[0060] FIG. 13 is a view from below of a second preferred embodiment of FIG. 1;

[0061] FIG. 14 is a sectional view according to the line XIV-XIV of FIG. 13;

[0062] FIG. 15 is a schematic perspective view from below of FIG. 14;

[0063] FIG. 16 is a sectional view according to the line XVI-XVI of FIG. 13;

[0064] FIG. 17 is a schematic perspective view from below of FIG. 16;

[0065] FIG. 18 is a sectional view according to the line XVIII-XVIII of FIG. 13;

[0066] FIG. 19 is a schematic perspective view from below of FIG. 17;

[0067] FIG. 20 is a plan view from below of a third preferred embodiment of FIG. 1;

[0068] FIG. 20bis is a view from below of FIG. 20;

[0069] FIG. 20ter is a view on an enlarged scale of a detail of FIG. 20 with hidden lines exposed to view;

[0070] FIG. 21 is a sectional view according to the median line XXI-XXI of FIG. 20;

[0071] FIG. 22 is a schematic perspective view from below of FIG. 21;

[0072] FIG. 23 is a sectional view according to the median line XXIII-XXII of FIG. 20;

[0073] FIG. 24 is a schematic perspective view from below of FIG. 23;

[0074] FIG. 25 is a sectional view according to the median line XXV-XXV of FIG. 20;

[0075] FIG. 25bis is a sectional view of FIG. 20 according to a section plane centred on the central axis and rotated with respect to two median planes of FIG. 20;

[0076] FIG. 26 is a schematic perspective view from below of FIG. 23;

[0077] FIG. 27 is a view from below of a fourth preferred embodiment of FIG. 1;

[0078] FIG. 28 is a perspective sectional view according to the median line XXVIII-XXVIII of FIG. 27;

[0079] FIG. 29 is a sectional view according to the median line XXIX-XXIX of FIG. 27;

[0080] FIG. 30 is a schematic perspective view from below of FIG. 29;

[0081] FIG. 31 is a sectional view according to the median line XXXI-XXXI of FIG. 27;

[0082] FIG. 32 is a symmetrical sectional view according to a first plane parallel to the line XXIX of FIG. 27;

[0083] FIG. 33 is a sectional view according to the median line XXXIII-XXXIII of FIG. 27;

[0084] FIG. 34 is a symmetrical sectional view of FIG. 32 according to a second plane parallel to the line XXIX of FIG. 27;

[0085] FIG. 35 is a plan view of a fifth preferred embodiment of FIG. 1;

[0086] FIG. 36 is a view from below of FIG. 35;

[0087] FIGS. 37-39 are cross-sectionals of FIG. 1 with respect to a central axis of increasing size starting from the base portion;

[0088] FIG. 40 is a lateral elevation view of FIG. 35; and

[0089] FIGS. 41-51 are sections of FIG. 40 executed with a plurality of planes parallel to that of the sheet.

DETAILED DISCLOSURE OF THE PRESENT INVENTION

[0090] In FIG. 1, the reference number 1 indicates a liquid dispenser 1 for medical washes. According to figures la and lb, the liquid is contained in a bag S connected to the dispenser 1 by a small-diameter flexible tube CF in fluid-tight hydraulic communication with the bag S through a delivery outlet BE obtained peripherally in said bag S, and in particular at the bottom in FIG. 1a. The latter furthermore has an eyelet SO on the opposite side to the delivery outlet BE which can be used to hang the bag S on a wall beside a sanitary fitting (a wash basin or other as required) in an elevated position with respect to the area to be sprayed with liquid to control the outlet thereof from the bag S through the tube CF, and therefore the dispenser 1, exclusively by means of gravity. By way of non-limiting example, the bag S can be hung through the eyelet SO on a hook carried by a suction pad V applied to a smooth surface like that of a tile or a mirror and, due to the difference in height between the bag S and the dispenser 1, the liquid can supply the dispenser 1 after flowing from the bag S through the flexible tube CF.

[0091] The dispenser 1 comprises a first membrane body 10 shaped symmetrically with respect to a first frontal median plane M and a second sagittal median plane N which identify in plan four quadrants I, II, III, IV, in a similar manner to the Cartesian plane of analytical geometry. The indications of these quadrants are shown in boxes in FIGS. 1 and 2. The first frontal and second sagittal median planes M and N are intersected in a central axis A, vertical in FIG. 1.

[0092] To each of the lines of the median planes M and N corresponds an axis of symmetry for the sections transversal to the central axis of the same first body 10, so that overall the dispenser 1 has a geometric conformation compatible with that of the nostrils, therefore suitable to be easily inserted in both and contained by them in a fluid-tight manner. Without conditioning the scope of the present invention, the first membrane body 10 can be made of pressure-deformable plastic material, for example, but not limited to, PVC, silicone or any other material having equivalent mechanical characteristics, or can be made of rigid plastic material, for example, but not limited to, ABS.

[0093] With particular reference to FIGS. 1-4, the first body 10 comprises a substantially dome-shaped portion 12, thus named due to the shape of the respective outer surface, and below referred to simply as dome 12. The latter extends from an annular flat body which here and below will be indicated by the term crown and indicated by the reference number 100.

[0094] The crown 100 is provided with a pair of projections 102 symmetrically opposed with respect to the first frontal median plane M and oriented substantially parallel to the second sagittal median plane N. The presence of these projections 12 is optional for implementation of the dispenser 1 according to the following description.

[0095] The dome 12 is axially delimited by a base portion 12′, in turn delimited by the crown 100, and by a substantially faceted convex apical portion/top 12″ which has a central flat portion 120 transversal to the axis A and four faces that extend from the flat portion 120 around the axis A transversally to the first frontal and second sagittal median planes M and N. Of these four faces, two first faces 122 are opposed, having the same shape and extension, in addition to being arranged symmetrically with respect to the median plane M; two second faces 124 are opposed, having the same shape and extension, in addition to being arranged symmetrically with respect to the second median plane N. With particular reference to FIGS. 5-12, the dispenser comprises a second body 20 carried by the first body 10 inside the dome 12 in a position concentric to the axis A. The connection between the first body 10 and the second body 20 is stiffened by substantially radial ribs 15.

[0096] The second body 20 has a hollow lower portion 22 which is also concentric with the axis A and an upper portion 28 connected to the dome 12. With particular reference to FIG. 5, 6, 10, 12, the upper portion 28 has at the bottom a cylindrical portion 27 contained inside the lower portion 22 and concentric with the axis A to define with the latter an axial cylindrical guide 270 for an end portion EP of a cylindrical tube CC supplying the liquid to the dispenser 1, only partially visible in FIG. 5 where it is shown by a broken line. Said guide 270 requires the end portion EP of the cylindrical tube CC that supplies the dispenser 1 with the washing liquid to be inserted by pressure, avoiding the use of gluing solutions such as, for example, but not limited to, cyclohexanone to stabilize the reciprocal connection.

[0097] The lower portion 22 and upper portion 28 are engaged by a first duct 280 and by a second duct 280′ terminating in the same dome 12 with a first nozzle 2800 and a second nozzle 2800′ respectively where the first nozzle 2800 and the second nozzle 2800′ are respectively arranged between the first frontal median plane M and the second sagittal median plane N at the same radial distance from the central axis A and on planes parallel to the second sagittal median plane N, therefore in a similar manner to the Cartesian plane in the II and IV quadrants in FIG. 1.

[0098] Furthermore, the first and the second duct 280/280′ have respective longitudinal axes A280/A280′ which are parallel to the central axis A in addition to being arranged at substantially identical distances from said central axis A; they lie on the plane M throughout the part contained in the lower portion 22 and the first part of the upper portion 28, while the end parts of the first and second ducts 280/280′ are inclined with respect to the first frontal median plane M but lie on planes parallel to the second sagittal median plane N, opening into the respective first and second nozzles 2800/2800′ (FIGS. 5-8). In particular, the first and second ducts 280/280′ have respectively a narrowing 2820/2820′ upstream of the respective first/second nozzle 2800/2800′, the longitudinal section has a substantially rectangular trapezium shape, continuing with an inclined cylindrical terminal section 2822/2822′ which terminates in the nozzle 2800/2800′, the outlet direction of which is parallel to the second sagittal median plane N and at least one component transversal to the first frontal median plane M, as in the arrows shown in FIGS. 1, 7, 8, 11, 12.

[0099] Further to the above description, the first and second ducts 280/280′ have respective terminal sections 2822/2822′ that terminate in the first and second nozzles 2800/2800′ with outlet direction (shown by a dash-dot line terminating in an arrow in FIG. 1) which, moving away from the first frontal median plane M is distanced point by point from the second sagittal median plane N by a length greater than or equal to the distance of the corresponding first and second nozzles 2800/2800′ from said second sagittal median plane N. It can be easily understood that the outlet direction is parallel to the plane N in the case of the outlet direction from the terminal sections 2822 and 2822′ being distanced point by point from the second sagittal median plane N by a length equal to the distance of the corresponding first and second nozzles 2800/2800′ from said second sagittal median plane N.

[0100] Again further to the above description, considering that the two terminal sections 2822 and 2822′ exit from the dome 12 with opposite directions, and that each corresponding jet is emitted by gravity from the nozzles 2800 and 2800′, each jet moves away from the first frontal median plane M/central axis A shaped in a substantially cylindrical manner and, in any case, determined by the cross section of the terminal section 2822/2822′ and by the shape of the nozzle 2800/2800′, while keeping a distance from the second sagittal median plane N, and in particular parallel to the latter, also when the pressure drops due to the progressive decrease in the liquid column contained in the bag S, therefore independently of the current value of the gravity acting on the liquid in the bag S.

[0101] Each of the first and second nozzles 2800/2800′ is obtained in one of the second faces 124 at the back of a respective outer edge, so that they are inclined with respect to the first frontal median plane M, from which they move away towards the top 12″. The terminal sections 2822 and 2822′ of the first duct 280 and second duct 280′ are inclined with respect to the first frontal median plane M but lie on planes parallel to the second sagittal median plane N, so that the jets delivered by the first and second nozzles 2800/2800′ remain parallel to the second sagittal median plane N and are inclined with respect to the first frontal median plane M, from which said jets move away (FIGS. 1, 7, 8, 11, 12). The version of the dispenser 1 provided with terminal sections 2822 and 2822′ which terminate curved in the first and second nozzles 2800/2800′ also falls within the present invention.

[0102] Again with reference to FIGS. 1-12, the lower portion 22 and the upper portion 28 are engaged by a third duct 280″, which is concentric with the central axis A, has a tapered conical shape proceeding from the base portion 12′ to the top 12″ and terminates in a third nozzle 2800″ which, therefore, is obtained centrally in the central flat portion 120. Furthermore, the third duct 280″ extends also inside the lower portion 22.

[0103] The cylindrical portion 27 has an outer shell 271 provided with two longitudinal grooves 272 coaxial with the first and second ducts 280/280′ to define, in use, with the cylindrical body CC installed (an outline of which is visible only in FIG. 2a), a supply channel 282/282′ for each first and second ducts 280/280′ when the end portion EP of the cylindrical duct CC couples with the cylindrical guide 270. Said supply channels 282/282′, which are formed in use once the end portion EP of the cylindrical duct CC is installed inside the guide 270, have a section transversal to the axis A having reduced form with respect to the cylindrical transversal section of the first and second ducts 280/280′, since an external portion of the end portion EP of the cylindrical duct CC must be subtracted from the circular section of said ducts, as illustrated in FIG. 2A. In this figure the external portions of the first and second ducts 280/280′ to be subtracted from the inside of the lower portion 22, as they cannot be engaged by the liquid, are shown by lines slanting at 45°.

[0104] The use of the dispenser 1 can be easily understood from the above description and does not require further explanation. However, it may be useful to specify that the first body 10 is shaped to easily treat the nasal cavities; in fact, the dome 12 is shaped to be inserted at least partially inside a nostril to be treated; in this way the external wall of the dome 12 adheres to the internal walls of the nostril, widening them so that the first and the second nozzles 2800 and 2800′ (of the first and second ducts 280 and 280′) and the third nozzle 2800″ are positioned at the inlet of the nasal cavity. With the dome 12 of the dispenser 1 held firm in the position described above, said dispenser 1 can deliver medical liquid in the form of substantially cylindrical jets with filiform dimension. The experimental tests carried out showed that the lateral jets and the central jet remain constantly separate throughout the washing phase and that this situation remains unchanged even when the pressure of the washing liquid drops, considering that the pressure of the liquid is produced exclusively by the force of gravity and therefore by the level difference between the free surface of the liquid contained in the tank and the nozzles described above of the dispenser 1. Without limiting the scope of the present invention, the medical liquid contains physiological solution.

[0105] It may also be useful to specify that, further to the above description, considering that a connection portion of the first and second ducts 280 and 280′ is contained in the lower portion 22 of the second body 20 and has reduced section when the guide 270 is engaged by the cylindrical body CC, in use, the liquid delivered to the first and second ducts 280 and 280′ undergoes, in use, an expansion upstream of the respective first and second nozzles 2800/2800′ and downstream of the portion of the first and second ducts 280/280′ contained in the lower portion 22 of the second body 20.

[0106] Lastly it is clear that variations can be made to the dispenser 1 described and illustrated above without departing from the scope of the present invention.

[0107] For example, with reference to FIGS. 13-19 a variation of the dispenser 1 is illustrated, where homologous structural details will be indicated for the sake of practicality by the same reference numbers as those used in FIGS. 1-12. The dispenser 1′ is functionally and aesthetically similar to the dispenser 1 but is provided exclusively with the first and second ducts 280 and 280′, arranged identically to the version of FIGS. 1-12.

[0108] The dispenser 1′ differs from the dispenser 1 described above due to the fact that the lower portion 22 is provided with a cylindrical seat 24 which is concentric to the axis A and is delimited at the top by a cylindrical portion with reduced diameter which is at the base of a tapered portion 26 clearly visible in FIGS. 14-19. The cylindrical portion 27 is therefore lacking and the cylindrical base of the tapered portion 26 acts as an abutment for a hollow cylindrical body which can be inserted inside the cylindrical seat 24 to supply the liquid to the first and second ducts 280/280′ of the dispenser 1′. The description of the other components shared with the first version of FIGS. 1-12 is omitted for the sake of textual economy, but are indicated in FIGS. 13-19 for the sake of practicality and to facilitate understanding of said embodiment of the invention.

[0109] It is therefore evident that in said case the jets emitted from the first and second nozzles 2800/2800′ of FIGS. 13-19 behave exactly like the jets emitted from the first and second nozzles 2800 and 2800′ of FIGS. 1-12 and, therefore, are diffused to the outside of the dome 12 parallel to the second sagittal median plane N of the dispenser 1′ and thus remain spaced from one another and from the second sagittal median plane N moving away from the top 12″ of the first body 10.

[0110] With reference to FIGS. 20-26 a dispenser 1″ is illustrated which is a further variation of the dispenser 1. This variation incorporates some of the characteristics of the dispenser 1 of FIGS. 1-12, since there are three ducts and nozzles, but it has a lower portion 22 which is substantially identical to that of FIGS. 13-19. It is useful to point out that FIG. 20 ter is schematic and has the sole purpose of showing in plan a projection of the various parts composing the first and the second ducts 280/280′ to facilitate understanding of the respective conformation which will be described better below.

[0111] In particular, in the lower portion 22 and approximately as far as the first half of the upper portion 28, the axes of the first, second and third ducts 280, 280′, 280″ lie arranged on a plane centred on the central axis A but inclined both with respect to the first frontal median plane M and with respect to the second sagittal median plane N, as can be clearly seen in FIG. 20bis.

[0112] Furthermore, considering the upper half of the upper portion 28, the first and the second ducts 280/280′ remain parallel to the axis A and have a section with decreasing section for approximately one third of said part of the upper portion 28. Said section with decreasing section is analogous to the narrowing 2820/2820′ of FIGS. 7, 8, 11 and 12, hence it is indicated by the same reference number. Going towards the top 12″, for the second third of the upper portion 28 in question, the first and the second ducts 280/280′ remain parallel to the axis A and have respective sections 2824/2824′ with substantially cylindrical and constant cross section; lastly, for the remaining third of the apical part of the upper portion 28, which leads to the first and second nozzles 2800 and 2800′, the first and the second ducts 280/280′ have inclined cylindrical sections similar to the terminal sections 2822/2822′ of FIGS. 7, 8, 11, 12. It may be useful to specify that these terminal sections 2822 and 2822′ have a substantially circular and constant cross section and that, in use, the jets delivered from the first and second nozzles 2800 and 2800′ of FIGS. 20-26 cross the first frontal median plane M remaining substantially cylindrical and filiform, moving away, and therefore diverging, from the second sagittal median plane N and, naturally, from the axis A.

[0113] It should be noted that the terminal sections 2822 and 2822′ of the first and second ducts 280/280′ of this embodiment of the present invention proceed towards the top 12″ according to divergent outlet directions, visible in FIGS. 20ter and 25bis where they are shown by dash-dot lines terminating in arrows, where said arrows indicate the diffusion direction of the jets of liquid delivered by the first and second nozzles 2800 and 2800′. Further to the above description, also in this case the first and second ducts 280/280′ have respective terminal sections 2822/2822′ which terminate in the first and second nozzles 2800/2800′ with outlet direction which, moving away from the first frontal median plane M, and therefore also from the central axis A and from the top 12″, is distanced point by point from the second sagittal median plane N by a length greater than or equal to the distance of the corresponding first and second nozzles 2800/2800′ from said second sagittal median plane N.

[0114] In particular, it is useful to specify that terminal sections 2822 and 2822′ can be constructed either curved or rectilinear without modifying the scope of the present invention or producing a different result in terms of divergence of the jets emitted from the respective first and second nozzles 2800 and 2800′.

[0115] With reference to FIGS. 27-34 a dispenser 1′″ is illustrated, which constitutes a further variation of the present invention. The dispenser 1′″ combines the upper portion 28 of the dispenser 1 of the present invention with the lower portion 22 of the dispenser 1′ and the dispenser 1″, since here again the lower portion 22 is hollow inside and has a cylindrical seat which terminates at the top in the tapered portion 26, already seen in FIGS. 14-26. Therefore, to better understand the conformation of the dome 12 of said version of dispenser 1″′, reference should be made to FIG. 1 for the sake of economy of drawing.

[0116] Unlike the version of FIGS. 13-19, in this case the upper portion 28 also has the central third duct 280″, which terminates concentrically on the central axis A with the respective central third nozzle 2800″ and unlike FIGS. 20-26 the first and second ducts 280 and 280′ have their respective inlets aligned with and centred on the first median plane M and arranged symmetrically with respect to the second sagittal median plane N. In addition, it should be noted that, as can be seen in FIGS. 29-34, proceeding from the crown 100 towards the top 12″, the first and second ducts 280/280′ have a first cylindrical section 2802/2802′ substantially parallel to the axis A, followed by a narrowing 2820/2020′ with substantially trapezoidal longitudinal section, developed around an axis substantially parallel to the central axis A. Said narrowing 2820/2020′ is followed by a substantially cylindrical terminal section 2822/2822′ (FIG. 31 for the section 2822 and FIG. 33 for the section 2822′) and inclined with respect to the first frontal median plane M and second sagittal median plane N to terminate centred in the first/second nozzle 2800/2800′.

[0117] With particular reference to FIGS. 35-51, a dispenser 1″″ is illustrated which constitutes a further variation of the present invention. In the dispenser 1″″ the inlets of the first, second and third ducts 280, 280′ and 280″, which open into the lower portion 22, are arranged aligned on a plane which is concentric to the central axis A and inclined with respect to the first and second sagittal median planes M and N; therefore, said plane cuts the quadrants I and III substantially at 45° as in FIGS. 20-26. Unlike the dispenser 1″′, the first and second nozzles 2800, 2800′ symmetrically engage the first two faces 122 of the top 12″, being cut symmetrically by the first frontal median plane M and arranged on opposite sides, and at the same distance with respect to the second sagittal median plane N, while the third nozzle 2800″ is concentric with the central axis A, being identical to the third duct 280″ of the dispensers 1″ and 1″′.

[0118] In addition, the first and second ducts 280 and 280′ are identical, obtained inside the upper portion 28 and are rotated with respect to each other by 180° so that they are polarly symmetrical with respect to the central axis A. In particular, as can be seen in FIGS. 37-38, which are sections of the dispenser 1 arranged transversally to the axis A and at increasing distances starting from the crown 100, the first and second ducts 280 and 280′ have a sequence of sections with form similar to the form of the homologous sections of the ducts 280 and 280′ of the dispenser 1″ (FIGS. 20-26) although the respective axes have a portion inclined towards the top 12 ″ of the dispenser to supply the nozzles 2800 and 2800′ arranged symmetrically to the first frontal median plane M and on opposite equally distant sides from the second sagittal median plane N. The same trend of the first and second ducts 280 and 280′ can be seen in FIGS. 41-51, each of which is a section of the dispenser 1″″ obtained with respect to a plane parallel to the second sagittal median plane N, starting from a plane more external with respect to the section of FIG. 46 to terminate in a more internal plane. In particular, as can be seen in FIGS. 42-50, proceeding from the crown 100 towards the top 12″ the first and second ducts 280/280′ of the dispenser 1″″ have a first cylindrical section 2802/2802′, followed by a narrowing 2820/2020′ with substantially trapezoidal longitudinal section, developed around an axis substantially parallel to the central axis A. Proceeding again towards the top 12″, said narrowing 2820/2020′ is followed by an intermediate substantially cylindrical section 2824/2824′ the axis of which is parallel to the central axis A but eccentric with respect to the axis of the first cylindrical section of the duct 280/280′. Each intermediate section 2824/2824′ is followed by a substantially cylindrical terminal section 2822/2822′ (FIGS. 42-44 for the section 2822′ and FIGS. 48-50 for the section 2822′) inclined with respect to the first frontal median plane M and the second sagittal median plane N to terminate centred in the first/second nozzle 2800/2800′.

[0119] Further to the above description, it can be understood that a dispenser shaped like any one of the dispensers 1, 1′, 1″, 1′″ 1″″, therefore provided with two lateral nozzles 2800 and 2800′ arranged on opposite sides of a median plane and, possibly, of a central nozzle 2800′″ inserted in a set comprising a bag S containing medical liquid and a flexible tube CF that connects an outlet BE of the bag S to the dispenser 1 by the sole action of the gravitational force acting on the liquid column, allows, in use, the delivery of two or three jets which remain separate as they move away from the top 12″ of said dispenser 1, 1′, 1″, 1′″ 1″″, allowing integral spraying of the mucosa that covers the entire nasal cavity even when the level of the free surface of the liquid contained in the tank S, and therefore the pressure acting on the washing liquid, drops.