Fluid Product Dosing Assembly

Abstract

The fluid product dosing assembly comprises a tank (10), a piston (20) sliding within the tank (10), a sampling needle attached to the tank (10) for aspirating the fluid product into the tank (10), and a removable spray head (40) assembled around the sampling needle (30) on the tank (10) for spraying the fluid product, the spray head (40) including an insert (50) arranged upstream of a dosing port (41) and axially movable between a transport position and a use position when assembled on the tank (10), and further comprising guide means (111; 39) for guiding the spray head (40) when it is assembled to its transport position and / or when it is moved to its use position, first locking means (112; 46, 119) for holding the spray head (40) in its transport position and second locking means (113; 48, 119) for holding the spray head (40) in its use position.

Description

[Technical field]

[0001] The present invention relates to a fluid product dispensing assembly. [Background technology]

[0002] Devices for dispensing fluent products are well known. They generally consist of a reservoir, a dispensing means and a dispensing head. The dispensing head can be, for example, a nasal type spray head. These spray heads generally consist of two parts, a body forming the head and a part forming the nozzle, i.e. the part that forms the spray by creating a swirl when dispensing the fluent product.

[0003] In the case of an external nozzle, a small sleeve is inserted from the outside into the downstream end of the body, thereby defining the spray profile.

[0004] In so-called internal nozzles, an insert inserted inside the head engages the end wall of the body to define the spray profile.

[0005] In either case, the spray profile generally comprises a number of, in particular three, non-radial channels formed in either the bottom wall of the head, the sleeve forming the outer nozzle, or the insert forming the inner nozzle.

[0006] Typically, a spray head is attached to the piston rod or valve of a pump and directs the dispensed fluid product from the pump or valve to a dispensing orifice.

[0007] However, it has also been proposed to spray the contents of a syringe rather than injecting through a needle by arranging a spray head directly at the outlet of the syringe reservoir, an arrangement which is described in WO 2000 / 071263.

[0008] Again, these spray heads are made of two or more parts assembled together, which in particular precludes the use of these syringes in an aspiration mode, i.e., a syringe with a spray head cannot be used in a typical aspiration mode of a syringe, e.g., to aspirate a fluid product from a sampling tank.

[0009] Additionally, needle syringes do not provide a spray when administering the fluid product.

[0010] WO 2015 / 104511 describes a fluid product dosing assembly consisting of an integral part in which a reservoir and a sampling needle are formed, which first mixes a powder with a solvent to form a fluid product, and then sprays the mixture in the form of a nasal spray in one or two doses via a spray head assembled around the sampling needle.

[0011] This assembly has a drawback: the tip of the sampling needle is either unprotected when the spray head is not assembled, or is stressed in the assembled spray head, either of which runs the risk of being damaged during transport prior to use, especially if the assembly is dropped.

[0012] Furthermore, the construction of a one-piece tank with needle can be complicated and requires the use of the same material, which is not always desirable.

[0013] Other prior art devices are described in US Pat. No. 5,547,131, US Pat. No. 1,065,392, US Patent Application Publication No. 2005 / 098172 and EP Patent No. 2,939,700. [Prior art documents] [Patent documents]

[0014] [Patent Document 1] International Publication No. 2000 / 071263 [Patent Document 2] International Publication No. 2015 / 104511 [Patent Document 3] U.S. Pat. No. 5,547,131 [Patent Document 4] U.S. Pat. No. 1,106,5392 [Patent Document 5] US Patent Application Publication No. 2005 / 098172 [Patent Document 6] European Patent No. 2939700 Summary of the Invention [Problem to be solved by the invention]

[0015] The present invention aims to provide a fluid product dosing assembly that does not reproduce the above mentioned drawbacks.

[0016] The present invention particularly aims to provide a fluid product delivery assembly which ensures the integrity of the needle tip prior to use, particularly during transport and storage.

[0017] The present invention also aims to provide a fluid product dosing assembly which allows optimizing the materials for manufacturing the reservoir and the sampling needle in particular.

[0018] It is also an object of the present invention to provide a fluid product dispensing assembly which is simple and inexpensive to manufacture and assemble, and which is operable in both aspiration and dispensing modes.

[0019] The present invention also aims to provide a fluid product dosing assembly that allows for achieving an accurate and reproducible spray. [Means for solving the problem]

[0020] In order to achieve the above object, the fluid product dosing assembly of the present invention comprises a tank for containing a fluid product, a sampling needle attached to the tank for drawing the fluid product to be administered into the tank, and a removable spray head assembled on the tank around the sampling needle for spraying the fluid product to be administered outside the tank, wherein the tank comprises a piston sliding within the tank, and the spray head comprises a dosing port and an insert arranged upstream of the dosing port, and when assembled on the tank, is axially movable between a transport position and a use position, and the fluid product dosing assembly further comprises a guide means for guiding the spray head when it is assembled to its transport position and / or when it is moved to its use position, a first locking means for holding the spray head in its transport position, and a second locking means for holding the spray head in its use position.

[0021] Advantageously, the sampling needle may comprise a needle portion provided with an outlet, the needle portion comprising a first portion of larger diameter and a second portion of smaller diameter, the second portion forming a tip portion including the outlet, and the insert may comprise a receiving sleeve for receiving the tip portion when the spray head is assembled onto the tank.

[0022] Advantageously, in the transport position, the tip formed by the second portion of smaller diameter may be arranged within the receiving sleeve with a space between an outer surface of the tip and an inner surface of the receiving sleeve.

[0023] Advantageously, in the use position, the first portion of larger diameter may be in tight, in particular sealing, contact with the receiving sleeve.

[0024] Advantageously, in the use position, the second portion of reduced diameter may be in close contact with the receiving sleeve.

[0025] According to an advantageous embodiment, the spray head comprises at least one internal profile extending radially inwards and the tank comprises second and third external profiles extending radially outwards and arranged at axially offset positions on the outer circumferential surface of the tank, the at least one internal profile engaging with the second external profile forming the first locking means defining the transport position and engaging with the third external profile forming the second locking means defining the use position.

[0026] Advantageously, the spray head is provided with a plurality of said internal profiles, preferably three, distributed over its circumference, and the second and third external profiles of the tank may each be formed in the form of a peripheral rib.

[0027] Advantageously, the tank may comprise a first external profile extending radially outwardly and offset axially upwards relative to the second external profile, engaging with the spray head to form the guide means.

[0028] Alternatively, the sampling needle may have an outer radial wall which engages with the spray head to form the guide means.

[0029] According to another advantageous embodiment, the tank may comprise a radially protruding lug and the spray head may comprise first and second notches extending axially upwards from diametrically opposed positions at its axially lower end, the second notch being larger than the first notch, the first locking means being formed by engagement of the lug with the first notch and the second locking means being formed by engagement of the lug with the second notch.

[0030] Advantageously, each of said cut-outs may terminate in a respective clipping zone into which said lug may be snapped.

[0031] Advantageously, the tank and / or the piston may comprise dose dividing means for dividing the fluid product to be administered contained in the tank into at least two doses intended to be sprayed during several successive actuations of the fluid product administration assembly.

[0032] Advantageously, the dose dividing means may comprise a lug on the piston sliding within a groove in the tank, the groove being provided with a shoulder for blocking the lug after administering the first dose of fluid product.

[0033] Advantageously, the reservoir and / or the piston may comprise energy storage means requiring the application of at least one force of a predetermined magnitude to enable spraying of the dispensed fluid product.

[0034] Advantageously, the energy storage means may comprise at least one bottleneck or boss which engages with the lug of the piston, said lug being capable of passing over the energy storage means at least when the predetermined force is applied to the piston.

[0035] Advantageously, the lug is axially offset from the energy storage means prior to actuation so that at the start of the actuation stroke the piston may perform an air and / or dead volume purge. [Brief description of the drawings]

[0036] 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] FIG. 2 is a schematic cross-sectional view of a dosing assembly according to a first advantageous embodiment, showing the spray head assembled in a transport position; [Diagram 2]FIG. 2 is a view similar to FIG. 1 in the position of use. [Diagram 3] FIG. 2 is a detailed cross-sectional view of the spray head according to the first embodiment. [Figure 4] 4 is a horizontal cross-sectional view of the spray head taken along the line AA shown in FIG. 3. [Diagram 5] FIG. [Figure 6] FIG. 2 is a schematic perspective view of a sampling needle according to the first embodiment. [Figure 7] FIG. 2 is a schematic perspective view of a tank according to the first embodiment. [Figure 8] FIG. 2 is a schematic perspective view of a piston. [Figure 9] FIG. 2 is a schematic diagram of the dosing assembly with the spray head in the transport position. [Figure 10] FIG. 1 shows the dosing assembly without the spray head during the sampling phase. [Figure 11] FIG. 1 shows the dosing assembly prior to administration of the first dose. [Figure 12] FIG. 1 shows the dosing assembly after administering the first dose and before administering the second dose. [Figure 13] FIG. 13 shows the dosing assembly after the second dose has been administered. [Figure 14] FIG. 11 is a schematic perspective view of a sampling needle according to a second embodiment. [Figure 15] FIG. 2 is a schematic cross-sectional view of a dosing assembly according to a second embodiment, showing the spray head assembled in the transport position. [Figure 16] FIG. 11 is a schematic perspective view of a tank according to a third embodiment. [Figure 17] FIG. 11 is a schematic perspective view of a spray head according to a third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0037] The fluid product dosing assembly includes a syringe-type reservoir 10 and a piston 20. The piston 20 slides within the reservoir 10 between a retracted position, shown in Figure 11, and a depressed position, shown in Figures 1, 2, 9, 10, 13 and 15.

[0038] A sampling needle 30 is attached to the tank 10, and a spray head 40 having a dispensing port 41 is removably attached to the top of the sampling needle 30. The spray head 40 includes a hollow insert 50 disposed upstream of the dispensing port 41.

[0039] In the sampling phase, the spray head 40 is removed to expose the sampling needle 30 which can be inserted into a container containing the fluid product to draw the fluid product through the sampling needle 40 into the tank 10 .

[0040] After this sampling step, the spray head 40 is returned to its original position around the sampling needle 30. This allows the fluid product contained in the reservoir 10 to be administered in the form of a spray, for example a nasal spray.

[0041] In accordance with the present invention, the removable spray head 40, when assembled to the tank 10, is axially movable between a transport position and a use position.

[0042] The piston 20 comprises a piston element 22 which is integral with a piston rod 21. The piston rod 21 is actuated during administration by the user, in particular by manual compression of an end collar 23 of the piston rod 21.

[0043] The piston element 22 may be formed integrally with the piston rod 21, for example by moulding of a plastic material, or it may be formed as a separate element that is attached to the piston rod 21, for example by overmolding. In this case, the piston element 22 may be of a different material to the piston rod 21.

[0044] The tank 10 is made up of an upper part 11 for receiving the fluid product to be dispensed and a lower part 12 for engaging a piston rod 21. Advantageously, between the upper part 11 and the lower part 12 of the tank 10, a radial flange 13 is provided forming a finger rest.

[0045] The top 11 of the tank 10 is provided with an end 110 to which the sampling needle 30 is attached, for example by screwing or snapping. This end 110 may have a reduced outer diameter as shown in Figures 1, 2 and 7.

[0046] The bottom part 12 of the tank 10 is provided with at least one groove 15, each groove 15 engaging with a lug 25 of the piston rod 21. This lug 25 projects radially outwards and slides in the corresponding groove 15 when the dosing assembly is actuated. Advantageously, two diametrically opposed grooves 15 and two diametrically opposed lugs 25 can be provided.

[0047] The groove 15 may be provided with a shoulder 17 forming the dose dividing means. In this case, the groove 15 is extended axially by an upper groove portion 16 which extends further up and is laterally offset from the position of the shoulder 17.

[0048] Thus, when the piston 20 is actuated to spray the fluid product to be dispensed, the lug 25 of the piston 20 slides axially within the first portion of the groove 15 and stops against the shoulder 17 of the groove 15. The shoulder 17 cuts off the actuation stroke of the piston 20 within the reservoir 10, thereby defining a first dose.

[0049] To spray, for example, a second dose, the user must rotate the piston 20 slightly to bring the lug 25 into the second groove portion 16. Of course, the invention also applies to single dose devices, where all of the dispensed fluid product is sprayed as one dose, but also to devices containing more than one dose, for example devices containing three or four doses.

[0050] Advantageously, the groove 15 has energy storage means, such as, for example, bottlenecks 18, 19, which engage with the lugs 25 at the start of each working stroke and can be imposed by the user to exert a force on the piston 20 sufficient to overcome at least the resistance offered by the energy storage means.

[0051] When this force is reached, the lug 25 passes over the energy storage means, causing a sudden release of the energy stored in the user's hand, thereby ensuring that the actuation stroke, or in the two-dose example, the actuation half-stroke, is fully achieved.

[0052] Of course, these energy storage means can be manufactured in any suitable way, the bottlenecks 18, 19 being only one example of an advantageous embodiment: for example bosses or breakable bridges in the grooves 15, 16 are conceivable.

[0053] Other variations of the dose dividing means are conceivable, for example by forming either the piston or the reservoir with an elastically deformable part which deforms when a sufficient force is applied to the piston. In this case the dose dividing means can at the same time constitute the energy storage means. Other variations are also conceivable.

[0054] In the illustrated example, the sampling needle 30 comprises a needle portion 35 with an outlet 32 ​​.

[0055] The sampling needle 30 is provided with a mounting portion 31 for mounting the sampling needle 30 to the tank 10, in particular to its end 110, for example by screwing, snapping or other suitable mounting means. The needle portion 35 advantageously comprises a first portion 33 of larger diameter connected to the mounting portion 31 and a second portion 34 of smaller diameter forming a tip provided with the outlet 32.

[0056] The spray head 40 comprises a hollow body 42 with a bottom wall containing a dispensing orifice 41. Upstream of the dispensing orifice 41, the spray head 40 comprises an insert 50 which is adapted to fit over the sampling needle 30.

[0057] The insert 50 is advantageously inserted into the upper sleeve 44 of the spray head 40. The insert 50 advantageously comprises one or more side passages 55 allowing the passage of the fluid product from the inside to the outside of the insert 50. Thus, the axial top end wall 51 of the insert 50 is closed and the outer surface of the axial top end wall 51 of the insert 50 together with the bottom wall of the spray head 40 can form a spray profile including, for example, a swirl channel 52 and a spray chamber 53.

[0058] This spray profile allows the fluid product to produce a good spray when dispensed through the spray head 40 .

[0059] The spray profile may be formed on the outer surface of the top end wall 51 of the insert. In a variant, the spray profile may be provided on the bottom wall of the spray head 40, in which case the outer surface of the top end wall 51 of the insert may be smooth.

[0060] Preferably, the spray head 40 and the insert 50 are each manufactured by moulding of a plastic material. Advantageously, the unit formed by the spray head 40 and the insert 50 is manufactured as described in WO 2021 / 094683 A1.

[0061] The insert 50 is provided on the axially opposite side to the upper end wall 51 with a receiving sleeve 59 for receiving the tip of the sampling needle 30 when the spray head 40 is assembled on the tank 10 .

[0062] In the shipping position as shown in FIG. 1, the needle tip formed by the smaller diameter second portion 34 of the needle 35 is advantageously positioned inside the receiving sleeve 59 of the insert 50, with a space between the outer surface of the tip 34 and the inner surface of the receiving sleeve 59.

[0063] Thus, in this transport position, the tip 34 of the sampling needle 30 is not subjected to radial stress by the insert 50, but is instead protected by the receiving sleeve 59 of the insert 50. This ensures that if the assembly is accidentally dropped, for example during transport, the tip 34 will not be damaged if the spray head 40 is stressed against the tank 10 by the impact of the drop.

[0064] As shown in FIG. 2, when the spray head 40 is moved axially to its use position, the needle 35 advantageously extends further into the receiving sleeve 59 until the larger diameter first portion 33 is in close sealing contact with the receiving sleeve 59.

[0065] Advantageously, the diameter of the receiving sleeve 59 decreases in the direction towards the dispensing orifice 41 so that in the use position the tip formed by the second part 34 of the needle 35 can lie closely against the inner wall of the receiving sleeve 59.

[0066] According to the invention, the assembly comprises guide means for guiding the spray head 40 when it is assembled in its transport position and / or when it is moved to its use position, first locking means for holding the spray head 40 in its transport position and second locking means for holding the spray head 40 in its use position. Figures 1 to 13 show a first advantageous embodiment.

[0067] In this first embodiment, the upper portion 11 of the tank 10 is provided with a first external profile 111, a second external profile 112 and a third external profile 113 which engage with the spray head 40. The first to third external profiles 111 to 113 each extend radially outward and are disposed at positions offset in the axial direction on the outer circumferential surface of the upper portion 11. This will be described in more detail below.

[0068] Each of the external profiles 111, 112, 113 can consist of one single profile extending over the periphery, for example in the form of a rib, or alternatively, for each external profile, several projections distributed in the circumferential direction can be considered as a profile.

[0069] The axial lower end 43 of the spray head 40 is provided with at least one radially inwardly extending inner profile 45. Advantageously, there may be several, for example three or four, inner profiles 45 distributed in the circumferential direction of the axial lower end 43. In a variant, a single inner profile extending over the entire circumference is possible.

[0070] The at least one internal profile 45 engages when the spray head 40 is assembled onto a tank 10 having a first external profile 111 , a second external profile 112 and / or a third external profile 113 .

[0071] Thus, when the spray head 40 is assembled on the tank 10, the at least one internal profile 45 first passes over the first external profile 111, which serves primarily as a guide and for axial alignment of the spray head 40 relative to the tank 10. Thus, in the first embodiment, the guide means is formed by the first external profile 111.

[0072] 1, in the case of transport and storage, the at least one inner profile 45 passes over the second outer profile 112 but not over the third outer profile 113. Thus, in the first embodiment, the first locking means is formed by the second outer profile 112.

[0073] And only when the device has to be used to spray the contents of the tank 10, the at least one internal profile 45 passes over the third external profile 113 and is snapped thereon. Thus, in the first embodiment, the second locking means is formed by the third external profile 113.

[0074] In the example shown in figures 1 to 13, in figure 4 it can be seen that there are three internal profiles 45 distributed in the circumferential direction of the spray head 40. In this case, the first, second and third external profiles 111, 112, 113 of the tank 10 are each formed by a peripheral rib, as shown in figure 10.

[0075] Advantageously, each part that makes up the dosing assembly can be made of a specific material adapted to optimize its properties. Thus, for example, the spray head 40 can be made of a hard but slightly flexible material, such as polypropylene, so that it can snap onto the external profiles 111, 112, 113 of the tank 10.

[0076] Similarly, the insert 50 may be made of a rigid yet slightly flexible material, such as polypropylene, so that it can seal both the spray head 40 and the sampling needle 30 .

[0077] The tank 10 may be made of a hard material, sufficiently translucent to allow viewing of the fluid product within the tank, but may have a slight flexibility, such as polypropylene, so that it can be fitted with the spray head 40 with limited force in the position of use.

[0078] Advantageously, the spray head 40, the insert 50 and the tank 10 are made of the same material, preferably polypropylene.

[0079] The sampling needle 30 is advantageously made of a material that is sufficiently flowable when molded and hard and unbreakable after cooling, to enable it to effectively pierce components made of, for example, COC, COP, PTCA, PBT or PC.

[0080] The piston 20 is made of a material, such as high density polyethylene, that is rigid and has a smooth, sliding surface, but is also somewhat flexible, so that it can ensure a seal with the tank 10 without generating excessive force. The compromise between rigidity and flexibility is important for the assembly of the piston 20 in the tank 10 and for effective energy storage during each actuation.

[0081] 9 to 13 partially illustrate stages in using a dosing assembly according to a first embodiment as described above.

[0082] Prior to use, as shown in FIG. 9, the spray head 40 is removably pre-assembled onto the sampling needle 30 in its storage and transport position, such that the tip of the sampling needle 30 is not subjected to stress while protected within the receiving sleeve 59 of the insert 50.

[0083] Thus, a user can remove the spray head 40 as shown in FIG. 10 to perform a sampling step, and then return the spray head 40 to the use position to perform spraying.

[0084] Sampling is conventionally performed by aspirating fluid from a sampling tank into the tank 10 by sliding the piston 20 within the tank 10 away from the needle 35. Optionally, different fluids can be aspirated from different sampling tanks and mixed in the tank 10 before spraying.

[0085] The spray head 40 is then reassembled around the sampling needle 30 so that it is in the use position shown in Figure 11. The fluid product to be administered may then be sprayed through the spray head 40.

[0086] Advantageously, a purge, for example an air purge and / or a dead volume purge, can be performed before administration of the first and / or second dose. In the rest state as in Figure 11, the piston rod lug 25 is axially offset from the bottleneck 18. At the start of the working stroke, the axial movement of the piston 20 makes it possible to perform this purge, until the piston rod lug 25 contacts the bottleneck 18 and allows the accumulation of energy.

[0087] FIG. 12 shows the assembly after the first dose has been administered, and FIG. 13 shows the assembly after the second dose has been administered.

[0088] Figures 14 and 15 show a second embodiment, which differs from the first embodiment described above only in terms of the guide means.

[0089] In this second embodiment, the first external profile 111 on the tank is no longer present and the sampling needle 30 has a radial outer wall 39 which engages with the inner circumferential surface of the spray head 40 when the spray head 40 is moved axially to guide the movement of the spray head 40.

[0090] 16 and 17 show a third embodiment.

[0091] In the third embodiment, similarly to the second embodiment, the guide means is formed by the outer wall 39 of the sampling needle 30. The difference from the second embodiment is the first and second locking means.

[0092] In a third embodiment, the tank 10 is provided at its upper portion 11 with lugs 119 projecting radially outwards. The spray head 40 is provided with two notches 46, 48 extending axially upwards from diametrically opposed positions at its lower axial end 43. The second notch 48 has a greater axial length than the first notch 46. Advantageously, each notch 46, 48 terminates in a clipping zone 47, 49 into which the lugs 119 of the tank 10 can be snapped.

[0093] In the transport position, the lug 119 is thus clipped in the clipping zone 47 of the first cutout 46 .

[0094] When a user wishes to use this assembly, in particular during a sampling phase, the spray head 40 in the transport position is removed from the tank 10 .

[0095] The spray head 40 is then mounted after the sampling phase and before using the assembly to dispense a dose of the fluid product in the tank 10, with the lug 119 of the tank then entering the second cut-out 48 and clipping in the use position with the clipping zone 49. Other variations of the guide means, the first locking means and the second locking means are also conceivable.

[0096] Although the present invention has been described with reference to certain advantageous embodiments thereof, it will be understood that those skilled in the art can make several useful modifications thereto without departing from the scope of the invention as defined by the appended claims.

Claims

1. 1. A fluid product dosing assembly comprising: a tank (10) containing a fluid product; a sampling needle (30) attached to the tank (10) for drawing the fluid product to be administered into the tank (10); a removable spray head (40) assembled on the tank (10) around the sampling needle (30) for spraying the fluid product to be administered outside the tank (10); Equipped with The tank (10) includes a piston (20) that slides within the tank (10), the spray head (40) includes a dispensing port (41) and an insert (50) arranged upstream of the dispensing port (41), and when assembled on the tank (10), is axially movable between a transport position and a use position; The fluid product dosing assembly further comprises: guide means (111; 39) for guiding said spray head (40) when it is assembled in its transport position and / or when it is moved to its use position; first locking means (112; 46, 119) for holding said spray head (40) in its transport position; second locking means (113; 48, 119) for holding the spray head (40) in its use position; 1. A fluid product dosing assembly comprising:

2. The sampling needle (30) comprises a needle portion (35) provided with an outlet (32), the needle portion (35) comprising a first portion (33) with a large diameter and a second portion (34) with a small diameter; the second portion (34) forms a tip portion including the outlet (32); The insert (50) comprises a receiving sleeve (59) that receives the tip when the spray head (40) is assembled on the tank (10).

10. The fluid product dosing assembly of claim 1.

3. In the transport position, the tip formed by the second portion (34) of smaller diameter is disposed within the receiving sleeve (59) with a space between the outer surface of the tip and the inner surface of the receiving sleeve.

3. The fluid product dosing assembly of claim 2.

4. In the use position, the first portion (33) of large diameter is in close, in particular sealing, contact with the receiving sleeve (59).

4. A fluid product dosing assembly according to claim 2 or 3.

5. In the use position, the second portion (34) of small diameter is in close contact with the receiving sleeve (59).

3. The fluid product dosing assembly of claim 2.

6. The spray head (40) comprises at least one radially inwardly extending internal profile (45); The tank (10) comprises second and third outer profiles (112, 113) extending radially outward on the outer circumferential surface of the tank (10) and arranged at axially offset positions; The at least one internal profile (45) engages with the second external profile (112) to form the first locking means defining the transport position, and engages with the third external profile (113) to form the second locking means defining the use position.

10. The fluid product dosing assembly of claim 1.

7. said spray head (40) is provided with a plurality of said internal profiles (45), preferably three, distributed over its circumference; The second and third external profiles (112, 113) of the tank (10) are each formed in the form of a peripheral rib.

7. The fluid product dosing assembly of claim 6.

8. The tank (10) comprises a first external profile (111) extending radially outward and arranged at a position offset axially upward with respect to the second external profile (112), which engages with the spray head (40) to form the guide means.

8. A fluid product dosing assembly according to claim 6 or 7.

9. The sampling needle (30) comprises a radially outer wall (39) which engages with the spray head (40) to form the guide means.

8. A fluid product dosing assembly according to claim 6 or 7.

10. The tank (10) is provided with radially projecting lugs (119), The spray head (40) has first and second notches (46, 48) extending axially upward from respective radially opposite positions at an axial lower end (43), The second notch (48) is larger than the first notch (46); the first locking means is formed by the engagement of the lug (119) with the first notch (46); The second locking means is formed by the engagement of the lug (119) with the second notch (48).

10. The fluid product dosing assembly of claim 1.

11. Each of said notches (46, 48) terminates in a respective clipping zone (47, 49) into which said lug (119) snaps.

11. The fluid product dosing assembly of claim 10.

12. The tank (10) and / or the piston (20) are provided with dose dividing means (15, 17; 25) for dividing the fluid product to be dispensed contained in the tank (10) into at least two doses intended to be sprayed during several successive actuations of the fluid product dispensing assembly.

10. The fluid product dosing assembly of claim 1.

13. the dose dividing means comprises a lug (25) of the piston (20) sliding in a groove (15) provided in the tank (10); The groove is provided with a shoulder (17) for blocking the lug (25) after dispensing the first dose of fluid product.

13. The fluid product dosing assembly of claim 12.

14. The tank (10) and / or the piston (20) are provided with energy storage means (18, 19) that require the application of at least one force of a predetermined magnitude to enable the spray of the fluid product to be dispensed.

10. The fluid product dosing assembly of claim 1.

15. the energy storage means (18, 19) comprises at least one bottleneck or boss which engages with the lug (25) of the piston; The lug (25) is capable of passing over the energy storage means at least when the predetermined force is applied to the piston (20). Fluid product dosing assembly according to claims 13 and 14.

16. The lug (25) is axially offset from the energy storage means (18, 19) before actuation, and at the beginning of the actuation stroke, the piston (20) performs a purge of air and / or dead volume.

16. The fluid product dosing assembly of claim 15.

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