Fluid product dispensing device

Abstract

A fluid product dispensing device comprising: a container (10) containing two doses of a fluid product; a dispensing member (20) sliding in said container (10) to dispense a fluid product; a body (30); a central part (90); a support (50) for receiving the container (10); a dispensing head (40); an actuating member (60) axially movable in said body (30) and engaging with said support (50) to perform successive actuations of the device; a first pushing element (33; 93) and a second pushing element (33'; 93') formed on said central part (90) and a first resistance element (53) and a second resistance element (54) formed on said support (50); and energy storage means comprising two resistance elements (53'), said first pressure element (33; 93) suitable for engaging with said first resistance element (53) to store energy during the ejection of a first dose and said second pressure element (33'; 93') suitable for engaging with said second resistance element (53') to store energy during the ejection of a second dose, the energy storage means being manufactured such that an active part of each first pressure element does not come into contact with the support during assembly and such that an active part of each second pressure element does not come into contact with the support during the ejection of the first dose.

Description

[Technical field]

[0001] The present invention relates to a device for expelling bidose-type fluid products, in particular nasal drops. [Background technology]

[0002] A Bidose type dispensing device is one which dispenses two doses of liquid when actuated twice in succession. Bidose type devices are well known in the prior art.

[0003] Such devices typically include a container containing two doses of liquid to be dispensed, and a dispensing member, typically a piston, mounted for sliding movement within the container to dispense the fluid therein. The piston moves in two successive actuation strokes, dispensing a first dose during one actuation and a second dose during a second actuation.

[0004] In this Bidose type device, there is also provided a dose separation means for defining the two doses, and typically an energy storage means for enabling actuation of the device by application of a constant force.

[0005] Such energy storage means can prevent unwanted or accidental actuation, for example during storage or transport, and can ensure that the full dose is dispensed with each actuation by providing a pre-compression by the user's hand upon actuation.

[0006] Such an energy storage means can be formed, for example, by a deformable, movable or destructible element and makes it possible to predefine the force required for actuation and therefore also the parameters of the spray generated upon ejection from the device.

[0007] However, there is a risk of damaging the energy storage means during assembly and / or operation of the device. During assembly, certain elements forming the energy storage means may be deformed upon impact, which may affect the energy storage performance. There is a risk that the variability of the actuation force required to overcome the energy storage means and actuate the device may increase, leading to variability in the spray characteristics during dose delivery. Such variability is undesirable, especially with regard to the reproducibility and stability of the dose delivery performance.

[0008] A similar risk exists for the energy storage means provided for the second dispense during the first dispense operation, during which it may be subjected to shocks which may alter it. Prior art devices are described in US 2010 / 0145275, US 2016 / 0068326 and US 7,681,570. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] US Patent Application Publication No. 2010 / 0145275 [Patent Document 2] US Patent Application Publication No. 2016 / 0068326 [Patent Document 3] U.S. Patent No. 7,681,570 Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has the object of providing a fluid product dispensing device that does not have the above-mentioned drawbacks. It is therefore an object of the present invention to provide a fluid product dispensing device that ensures the integrity of the energy storage means before use.

[0011] It is also an object of the present invention to provide a fluid product delivery device that reduces variability in actuation force and improves repeatability and consistency of delivery parameters for each dose.

[0012] It is another object of the present invention to provide a fluid product dispensing device that is simple and inexpensive to manufacture and assemble. [Means for solving the problem]

[0013] In order to achieve the above object, the fluid product dispensing device according to the present invention comprises a container containing two doses of a fluid product, a dispensing member such as a piston slidably mounted within the container and dispensing the fluid product, a main body, a central part fixed to the main body, a support containing the container, and a dispensing head having a discharge port, the discharge head being axially movable within the main body and engaging with the support and displacing the support relative to the central part to slide the discharge member within the container and dispense the fluid product through the discharge port, thereby achieving continuous operation of the device. a return spring arranged to return said actuating member to its starting position after each actuation; and energy storage means comprising a first pressure element and a second pressure element formed on said central portion and a first resistance element and a second resistance element formed on said support, said first pressure element being adapted to engage with said first resistance element and to store energy during the ejection of a first dose, and said second pressure element being adapted to engage with said second resistance element and to store energy during the ejection of a second dose, Each pressing element comprises a radially deformable tab, the lower axial end of which is provided with a central pressing area, the lower axial surface of which contacts a corresponding resistance element during operation, the support comprises two radially opposed longitudinal profiles, each of which, starting from an upper axial edge, comprises a first deformation profile, a first window, a second deformation profile and a second window, the first window in one longitudinal profile containing the first resistance element and the second window in the other longitudinal profile containing the second resistance element. each deformation profile has a central slope extending in the axial direction and sloping radially outward as it extends downward, the central slope being disposed between first and second side ribs that are straight in the axial direction and have a constant radial dimension, each central pressing area being disposed between a first sloped area and a second sloped area, and each pressing element is configured to engage with a corresponding one of the first deformation profiles while each central pressing area does not come into contact with the support when the support is moved axially relative to the central portion during assembly.

[0014] Advantageously, when the support moves axially relative to the central portion during ejection of a first dose, the second pressure element engages with the second deformation profile such that its central pressure area is not in contact with the support.

[0015] Advantageously, the first and second resistance elements are arranged at axially offset positions on the support.

[0016] Advantageously, the first and second pressing elements are arranged radially opposite each other on the central portion.

[0017] Advantageously, said first and second resistance elements are formed by breakable bridges which are broken during actuation or by deformable beams which are deformed during actuation.

[0018] Advantageously, the first and second pressing elements are identical, the first pressing element engaging with one longitudinal profile and the second pressing element engaging with the other longitudinal profile.

[0019] Advantageously, each of said first deformation profiles engages with a corresponding said push element during assembly and each of said second deformation profiles engages with a corresponding said push element during ejection of a first dose.

[0020] Advantageously, the radially inner surface of each of said pressure elements is T-shaped.

[0021] Advantageously, during assembly, said central pressure area can engage with a corresponding central bevel of said first deformation profile and said inclined areas can engage with corresponding said side ribs.

[0022] Advantageously, during ejection of a first dose, said central pressure area can engage with said central bevelled surface of the corresponding second deformation profile and said inclined area can engage with the corresponding side rib.

[0023] Advantageously, during assembly, the inclined region of each of the pressure elements slides downwards from its axial upper edge over the side ribs of the corresponding first deformation profile to deform the deformable tabs radially outward, and each of the central pressure regions first faces the part of the central bevel having the smallest diameter and then moves radially outward away from the central bevel as assembly progresses, thereby avoiding contact with the support.

[0024] Advantageously, during ejection of the first dose, the inclined region of each pressure element slides downwards from its axial upper edge over the side ribs of the corresponding second deformation profile to deform the deformable tabs radially outwardly, and each central pressure region first faces the part of the central beveled surface having the smallest diameter and then moves radially outwardly away from the central beveled surface as ejection of the first dose progresses, thereby avoiding contact with the support.

[0025] Advantageously, at the end of assembly, the deformable tabs are fitted into the corresponding first windows and the first pressure element is positioned facing the first resistance element to store energy during the ejection of the first dose.

[0026] Advantageously, at the end of the ejection of the first dose, the deformable tab fits into the corresponding second window and the second pressure element is positioned facing the second resistance element to store energy during the ejection of the second dose. [Brief description of the drawings]

[0027] The characteristics, advantages and other aspects of the invention will become more apparent with reference to the detailed description given below, by way of non-limiting example, and the accompanying drawings, in which: [Figure 1] 1 is a schematic cross-sectional view of a fluid product dispensing device according to a first advantageous embodiment, shown prior to dispensing a first dose; [Diagram 2] 1 is a schematic cross-sectional view of a fluid product dispensing device according to a first advantageous embodiment, shown after dispensing a first dose; [Diagram 3] 1 is a schematic cross-sectional view of a fluid product dispensing device according to a first advantageous embodiment, shown prior to dispensing a second dose; FIG. [Figure 4] 1 is a schematic cross-sectional view of a fluid product dispensing device according to a first advantageous embodiment, shown after dispensing a second dose; [Diagram 5] FIG. 5 is a schematic side perspective view of the main body of the device shown in FIGS. 1 to 4. [Figure 6] FIG. 6 is a schematic bottom perspective view of the main body shown in FIG. 5. [Figure 7] FIG. 7 is a schematic partial perspective view of a first pressing element fixed to the body shown in FIGS. 5 and 6; [Figure 8] FIG. 5 is a schematic side view of a support for the device shown in FIGS. 1 to 4. [Figure 9] FIG. 5 is a schematic side view of a support for the device shown in FIGS. 1 to 4. [Figure 10] 13 is a schematic diagram showing the state in which the support body is assembled to the main body. FIG. [Figure 11] FIG. 11 is an enlarged detail view of the portion shown in FIG. [Figure 12] FIG. 13 is an enlarged detail showing the position of the pressure element during assembly. [Figure 13] FIG. 4 is an enlarged detail view showing a different position of the pressure element during assembly. [Figure 14] 4A-4C are enlarged detail views showing further different positions of the pressure element during assembly; [Figure 15] 4A-4C are enlarged detail views showing further different positions of the pressure element during assembly; [Figure 16] 1 is a schematic cross-sectional view of a fluid product dispensing device according to a second advantageous embodiment, shown prior to dispensing a first dose; FIG. [Figure 17] 1 is a schematic cross-sectional view of a fluid product dispensing device according to a second advantageous embodiment, shown after dispensing a first dose; [Figure 18] 1 is a schematic cross-sectional view of a fluid product dispensing device according to a second advantageous embodiment, shown prior to dispensing a second dose; FIG. [Figure 19] 1 is a schematic cross-sectional view of a fluid product dispensing device according to a second advantageous embodiment, shown after dispensing a second dose; FIG. [Figure 20] FIG. 5 is a schematic bottom perspective view of the center of the device shown in FIGS. 1 to 4. [Figure 21] 21 is a schematic partial perspective view of a first pressing element fixed to the body shown in FIG. 20; FIG. [Figure 22] FIG. 20 is a schematic side view of a support for the device shown in FIGS. 16 to 19. [Figure 23] FIG. 20 is a schematic side view of a support for the device shown in FIGS. 16 to 19. [Figure 24] FIG. 13 is a schematic diagram showing the state in which the support body is assembled to the central portion. [Diagram 25] FIG. 25 is an enlarged detail view of the portion shown in FIG. 24. [Figure 26] FIG. 13 is an enlarged detail showing the position of the pressure element during assembly. [Figure 27] FIG. 4 is an enlarged detail view showing a different position of the pressure element during assembly. [Figure 28] 4A-4C are enlarged detail views showing further different positions of the pressure element during assembly; [Figure 29] 4A-4C are enlarged detail views showing further different positions of the pressure element during assembly; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] In the following description, the terms "axial" and "radial" refer to directions relative to the central longitudinal axis of the fluid product dispensing device, and the terms "upper", "lower", "upper" and "lower" refer to the upright positions of the device as shown in Figures 1-4 and 16-19.

[0029] The invention will be described below with reference to two embodiments of a Bidose, i.e. a device for dispensing two doses of a fluid product in two successive actuations. However, the Bidose type device shown in the drawings is only one example of a possible embodiment to which the invention can be applied. It is understood that the invention applies to any type of generic device containing two doses.

[0030] Referring to the drawings, a Bidose type dispensing device comprises a container 10 containing two doses of fluid. A dispensing member, such as a piston 20, is slidably mounted within the container 10. The piston 20 acts as a stopper isolating the contents of the container 10 in the pre-actuated position of the device shown in Figures 1 and 16.

[0031] The body 30 is mounted on the container 10 for axial movement relative to the container 10. In particular, axial movement of the body 30 relative to the container 10 moves the piston 20 within the container 10, thereby dispensing the fluid product within the container 10.

[0032] Assembled to the body 30 is a dispensing head 40. The dispensing head 40 includes a dispensing channel 43 that extends from a perforated tip 44 to an outlet 41 of the dispensing head 40. An upstream side of the outlet 41 may be provided with a known spray profile (not shown) for dispensing the fluid product in the form of a spray.

[0033] A nose piece 49 may be disposed about the discharge head 40 to limit and / or direct the insertion of the discharge head 40 into the nostrils.

[0034] In the first embodiment shown in Figures 1 to 15, the ejection head 40 is assembled and fixed to the main body 30, whereas in the second embodiment shown in Figures 16 to 29, the ejection head 40 and the main body 30 are formed as a single integral part.

[0035] The body 30 is provided with a central portion 90 which incorporates energy storage means as will be described in more detail below.

[0036] In the first embodiment shown in Figures 1 to 15, the central portion 90 is formed as an integral part with the main body 30, whereas in the second embodiment shown in Figures 16 to 29, the central portion 90 is fixed to the main body 30.

[0037] The container 10 is fixed within the support 50 so that the support 50 moves together with the container 10 as a unit.

[0038] The body 30 includes a lower skirt 32 adapted to engage the actuation member 60. The finger rest 80 is formed on the body 30 and / or the dispensing head 40 or, in a variant, the finger rest 80 can be assembled onto the body 30 and / or the dispensing head 40.

[0039] The actuating member 60 is axially movable within the lower skirt 32 of the body 30 to effect sequential actuation of the device. The actuating member 60 comprises at least one inclined tab 61 adapted to engage with the projections 51, 52 of the support 50 to effect sequential actuation.

[0040] At least one return spring 70 is attached between the actuating member 60 and the body 30 and / or the dispensing head 40, which returns the actuating member 60 to its starting position after each actuation. In the illustrated example, two parallel springs 70 are shown, but any number of springs could also be implemented.

[0041] The operation of the devices shown in each figure is as follows.

[0042] In the rest position shown in Figures 1 and 16, the piston 20 isolates the contents of the container 10 from the atmosphere.

[0043] When the user presses the actuating member 60 against the finger rest 80, the actuating member 60 moves upward inside the lower skirt 32 of the body 30. This causes the shoulder 51 of the support 50 to be pressed by the tab 61 of the actuating member 60, forcing the support 50 axially upward. This compresses the return spring 70, and moves the container 10 relative to the body 30.

[0044] When the container 10 begins to move relative to the body 30 , the perforated tip 44 of the discharge channel 43 penetrates the piston 20 so that the interior of the container 10 communicates with the discharge channel 43 .

[0045] Continued actuation causes the piston 20 to move within the container 10 and expel the first dose. The fluid product within the container 10 is thus forced by the piston 20 through the perforated tip 44 and into the discharge channel 43, and then expelled via the spray profile 39 out of the device through the discharge orifice 41.

[0046] After ejection of the first dose, the device is in the position shown in Figures 2 and 17 and when the user releases the actuating member 60, the spring 70 returns it to the starting position.

[0047] During the return of the actuating member 60 to the starting position, the container 10 and the support 50 do not move backwards, since they remain maintained within the body 30. Advantageously, anti-return means are provided to prevent the support 50 and / or the container 10 from moving backwards.

[0048] When the actuating member 60 returns to its rest position under the action of the return spring 70, the tab 61 is positioned below the second projection 52 of the support 50. This enables the user to actuate the device again to dispense a second dose of the liquid product.

[0049] Figures 3 and 18 represent the position of the actuating member before the ejection of the second dose, and Figures 4 and 19 represent the position of the actuating member after the ejection of the second dose.

[0050] The device comprises a plurality of energy storage means, a first energy storage means for the first dose and a second energy storage means for the second dose.

[0051] In a first embodiment shown in Figures 1 to 15, the central portion 90 fixed to the main body 30 is made as an integral part with the main body 30, and the ejection head 40 is fixed to the main body 30. In a second embodiment shown in Figures 16 to 29, the ejection head 40 is made as an integral part with the main body 30, and the central portion 90 is fixed to the main body 30.

[0052] The first energy storage means comprises a first resistance element 53 formed on the support 50 and engaging with a corresponding first pressure element 33 , 93 formed on the central portion 90 .

[0053] The second energy storage means comprises a second resistance element 53 ′ formed on the support 50 and engaging with a corresponding second pressure element 33 ′, 93 ′ formed on the central portion 90 .

[0054] The first resistance element 53 and the second resistance element 53' are disposed at positions offset in the axial direction on the support 50. The first pressing elements 33, 93 and the second pressing elements 33', 93' are disposed opposite to each other in the radial direction on the central portion 90.

[0055] The support 50 comprises two longitudinal profiles arranged radially opposite each other, each of which comprises, starting from an upper axial edge, a first deformation profile 55, a first window 54, a second deformation profile 55' substantially identical to the first deformation profile 55, and a second window 54'.

[0056] Each longitudinal profile is provided in only one of its windows 54, 54' with a single resistive element 53 or 53' corresponding to that window.

[0057] Thus, if a first longitudinal profile comprises a first resistance element 53 in its first window 54, there is no resistance element in its second window 54'. In this case, the other second longitudinal profile comprises a second resistance element 53' in its second window 54' and there is no resistance element in its first window 54.

[0058] The resistance elements 53, 53' may be formed by breakable bridges which are broken during actuation or by deformable beams which are deformed during actuation.

[0059] For each longitudinal profile, the first deformation profile 55 and the second deformation profile 55' are advantageously identical, the first deformation profile 55 comprising a central bevel 551 and the second deformation profile 55' comprising a central bevel 551'.

[0060] The central slope 551 is disposed between the first and second side ribs 552, 553 having a constant radial dimension, and the central slope 551' is disposed between the first and second side ribs 552', 553' having a constant radial dimension. Each of the central slopes 551, 551' extends in the axial direction and is inclined so as to widen radially outward as it extends downward. This can be seen particularly from FIG. 8.

[0061] The first pressing element 33, 93 and the second pressing element 33', 93' are identical, the first pressing element 33, 93 engaging with a first longitudinal profile and the second pressing element 33', 93' engaging with a second longitudinal profile.

[0062] Since the pressing elements are the same in the two embodiments, the following description will be made with reference to the first embodiment shown in Figures 1 to 15 with pressing elements 33, 33'. This description also applies analogously to the second embodiment shown in Figures 16 to 29 with pressing elements 93, 93'.

[0063] Each pressure element 33, 33' comprises a radially deformable tab 330, 330' at its lower axial end provided with a central pressure area 331, 331' whose lower axial surface comes into contact with the respective resistance element 53, 53' during operation.

[0064] Thus, to ensure the integrity of the two central pressure areas 331, 331' during assembly, it is desirable that they are not subjected to shocks during assembly. Similarly, to ensure the integrity of the second central pressure area 331' during the delivery of the first dose, it is desirable that the second central pressure area is not subjected to shocks during this first delivery.

[0065] Each of the first deformation profiles 55 engages with a corresponding push element 33, 33' during assembly and each of the second deformation profiles 55' engages with a corresponding push element 33, 33' during ejection of the first dose.

[0066] As shown in figure 7, each central pressure area 331, 331' is arranged between a first inclined area 332, 332' and a second inclined area 333, 333'. Advantageously, the radially inner surface 335 of each pressure element 33, 33' has a T-shape.

[0067] During assembly, each of the central press areas 331, 331' engages with a corresponding central bevel 551, the beveled areas 332, 333 engage with the side ribs 552, 553 of one deformation profile 55 and the beveled areas 332', 333' engage with the side ribs 552, 553 of the other deformation profile 55.

[0068] Thus, as can be seen in Figures 10 to 15, which show the assembly of the support 50 within the main body 30, the inclined regions 332, 333 and 332', 333' of each pressing element 33, 33' slide downwards from their axially upper edges over the side ribs 552, 553, causing the deformable tabs 330, 330' to deform radially outward.

[0069] This causes each central pressing area 331, 331' to initially face the portion of each central bevel 551 having the smallest diameter, and then to move radially outward away from the central bevel 551 as assembly progresses, thereby avoiding contact with the support 50.

[0070] As shown in FIG. 15, at the end of assembly, the deformable tabs 330, 330' are snapped into their corresponding first windows 54, thereby positioning the first pushing element 33 facing the first resistive element 53 and allowing the accumulation of energy during the ejection of the first dose.

[0071] Since the central pressure area 331 is not in contact with the support 50 during assembly, this energy accumulation will be perfectly in line with the designed specifications.

[0072] Since the second deformation profile 55' is identical to the first deformation profile 55, when the first dose is ejected, as during the assembly described above, after the first ejection, the second pressing element 33' is positioned facing the second resistance element 53', thereby allowing the accumulation of energy during the ejection of the second dose.

[0073] Since the central pressure area 331' is not in contact with the support 50 during assembly or during the ejection of the first dose, the energy accumulation during the ejection of the second dose complies entirely with the designed specifications.

[0074] The invention has been described above with reference to two embodiments, which are not limiting and several useful modifications can be made thereto without departing from the scope of the invention as defined by the appended claims.

Claims

1. 1. A fluid product dispensing device comprising: a container (10) containing two doses of a fluid product; a dispensing member (20), such as a piston, slidably mounted within the container (10) for dispensing the fluid product; A main body (30); a central portion (90) fixed to the body (30); a support (50) for receiving said container (10); a discharge head (40) having a discharge port (41); an actuating member (60) axially movable within the body (30) and engaging with the support (50) to move the support (50) relative to the central portion (90) to slide the discharge member (20) within the container (10) and discharge a fluid product through the discharge opening (41), thereby performing successive operations of the device; a return spring (70) arranged to return said actuating member (60) to its starting position after each actuation; an energy storage means including a first pressing element (33; 93) and a second pressing element (33'; 93') formed on the central portion (90), and a first resistance element (53) and a second resistance element (53') formed on the support (50); Equipped with said first pushing element (33; 93) is adapted to engage with said first resistive element (53) and to store energy during the expulsion of a first dose; said second pushing element (33'; 93') is adapted to engage with said second resistive element (53') and to store energy during the expulsion of the second dose, each pressure element (33, 33'; 93, 93') comprises a radially deformable tab (330, 330'; 930, 930') at its lower axial end provided with a central pressure area (331, 331'; 931, 931') whose lower axial surface is in contact with the corresponding resistance element (53, 53') during operation; The support (50) comprises two radially opposing longitudinal profiles, each of which comprises, starting from an axially upper edge, a first deformation profile (55), a first window (54), a second deformation profile (55') and a second window (54'); the first window (54) in one longitudinal profile contains the first resistance element (53), and the second window (54') in the other longitudinal profile contains the second resistance element (53'); Each of the deformation profiles (55, 55') has a central inclined surface (551, 551') extending in the axial direction and inclined so as to widen radially outward as it extends downward, and the central inclined surface (551, 551') is disposed between first and second side ribs (552, 552'; 553, 553') that are straight in the axial direction and have a constant radial dimension; Each of the central pressure areas (331, 331'; 931, 931') is disposed between a first inclined area (332, 332'; 932, 932') and a second inclined area (333, 333'; 933, 933'), When the support (50) is moved axially relative to the central part (90) during assembly, each pressing element (33, 33'; 93, 93') engages with the corresponding first deformation profile (55), while each central pressing area (331, 331'; 931, 931') does not come into contact with the support (50).

1. A fluid product dispensing device comprising:

2. When the support (50) moves axially relative to the central part (90) during the ejection of the first dose, the second pressure element (33', 93') engages with the second deformation profile (55') so that its central pressure area (331', 931') does not come into contact with the support (50).

10. The fluid product dispensing device of claim 1.

3. The first and second resistance elements (53, 53') are arranged at axially offset positions on the support (50).

3. A fluid product dispensing device according to claim 1 or 2.

4. The first pressing element (33; 93) and the second pressing element (33'; 93') are arranged radially opposite each other on the central part (90).

10. The fluid product dispensing device of claim 1.

5. The first and second resistance elements (53, 53') are formed by breakable bridges that break during actuation or by deformable beams that deform during actuation.

10. The fluid product dispensing device of claim 1.

6. said first pressing element (33; 93) and said second pressing element (33'; 93') are identical, said first pressing element (33; 93) engages with one of the longitudinal profiles, The second pressing element (33'; 93') engages with the other longitudinal profile.

10. The fluid product dispensing device of claim 1.

7. each of said first deformation profiles (55) engages with a corresponding one of said pressure elements (33, 33'; 93, 93') during assembly; Each of said second deformation profiles (55') engages with a corresponding said pressure element (33, 33'; 93, 93') during the expulsion of the first dose.

10. The fluid product dispensing device of claim 1.

8. The radially inner surface (335) of each of said pressing elements (33, 33'; 93, 93') is T-shaped 10. The fluid product dispensing device of claim 1.

9. During assembly, said central pressing area (331, 331'; 931, 931') can engage with the corresponding central bevel (551) of said first deformation profile (55), and said inclined areas (332, 333; 932, 933 and 332', 333'; 932', 933') can engage with the corresponding side ribs (552, 553).

10. The fluid product dispensing device of claim 1.

10. During the ejection of the first dose, said central pressure area (331, 331'; 931, 931') can engage with the corresponding central bevel (551') of said second deformation profile (55), and said bevel areas (332, 333; 932, 933 and 332', 333'; 932', 933') can engage with the corresponding side ribs (552', 553').

10. The fluid product dispensing device of claim 1.

11. During assembly, the inclined regions (332, 333; 332', 333') of each pressing element (33, 33'; 93, 93') slide downwards from their axial upper edges on the side ribs (552, 553) of the corresponding first deformation profile (55), deforming the deformable tabs (330, 330'; 930, 930') radially outward, and each central pressing region (331, 331'; 931, 931') first faces the part of the central inclined surface (551) with the smallest diameter and then moves radially outward away from the central inclined surface (551) as assembly progresses, thereby avoiding contact with the support (50).

10. The fluid product dispensing device of claim 1.

12. During the ejection of the first dose, the inclined regions (332, 333; 332', 333') of each pressure element (33, 33'; 93, 93') slide downwards from their upper axial edges on the side ribs (552', 553') of the corresponding second deformation profile (55') to deform the deformable tabs (330, 330'; 930, 930') radially outward, and each central pressure region (331, 331'; 931, 931') first faces the part of the central bevel (551') with the smallest diameter, and then moves radially outward away from the central bevel (551') as the ejection of the first dose progresses, thereby avoiding contact with the support (50).

10. The fluid product dispensing device of claim 1.

13. At the end of the assembly, the deformable tabs (330, 330'; 930, 930') are fitted into the corresponding first windows (54), and the first pressure elements (33, 93) are positioned facing the first resistance element (53) to store energy during the ejection of the first dose.

10. The fluid product dispensing device of claim 1.

14. At the end of the ejection of the first dose, the deformable tabs (330, 330'; 930, 930') fit into the corresponding second windows (54'), and the second pushing elements (33', 93') are positioned facing the second resistance element (53') to store energy during the ejection of the second dose.

10. The fluid product dispensing device of claim 1.

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