EP3941845A1

EP3941845A1 - Capsule adapted to receive a fluid, and assembly comprising a container and said capsule

Info

Publication number: EP3941845A1
Application number: EP20726512.5A
Authority: EP
Inventors: David BOUTELOUP; Fabrice BOURDIER; Florence Bidamant
Original assignee: Coradin SAS
Current assignee: Coradin SAS
Priority date: 2019-03-22
Filing date: 2020-03-17
Publication date: 2022-01-26
Also published as: FR3093999A1; FR3093999B1; KR20210142160A; WO2020193918A1; US20220063880A1

Abstract

The invention relates to a capsule adapted to seal the opening in a container, such as the neck of a bottle, wherein said container is adapted to contain a first fluid, the capsule being adapted to contain a second fluid that is different from the first fluid, the capsule comprising a striker which is movable from a first initial position to a second opening position and which allows, in said second position, the second fluid from being released into the container such that the first fluid and the second fluid are mixed, said striker being in the form of a cylinder adapted to allow a fluid discharge device, such as a pipette, to penetrate the capsule and enter the container.

Description

DESCRIPTION

Title: Capsule adapted to receive a fluid and assembly comprising a container and said capsule

Field of the invention

The invention relates to a capsule, adapted to close the opening of a container, such as the neck of a bottle, in which said container is adapted to contain a first fluid, the capsule being, in turn, adapted to contain a second fluid, different from said first fluid.

The capsule according to the present invention is provided with a space intended to receive at least a second fluid, different from the first fluid. The invention also relates to the assembly consisting of a container, suitable for packaging a first fluid, and a capsule according to the invention.

State of the art

Capsules, adapted to provide a space intended to contain a second fluid have already been disclosed in the prior art, said capsules being adapted to close a container intended to contain a first fluid. At a time determined by the user, the contents of the capsule, namely the second fluid contained in said capsule, can be released in order to mix with the first fluid present in the container. An example of a capsule of this type is described in American patent US Pat. No. 8,413,802. This type of capsule can be useful for mixing a first and a second fluid, and this just before the first opening of the container, in order to ensure that said first fluid and said second fluid are freshly mixed before said mixture is expelled from the container. Another option of this type of capsule consists in offering the user the choice of whether or not to mix the contents of the capsule, that is to say the second fluid, with the first fluid contained in the container. The capsules, disclosed within the state of the art, have a feature according to which, in the case where said capsule is withdrawn from the container for its opening, the space intended to contain the second fluid is withdrawn from said container at the same time. . A first drawback results from the fact that if the mechanism making it possible to mix the second fluid with the first fluid, present in the container, has already been used, the space intended to receive the second fluid has already been opened. By removing the cap from the container, the remainder of said second fluid can optionally remain, in a pure state, accessible to the user. In the event that the second fluid is particularly acidic or corrosive, contact with the second fluid, in a pure state, may present a danger to the user.

In addition, by removing the space intended to receive the second fluid, when the capsule according to the prior art is withdrawn from the container, the side of the space, adapted to receive said second fluid, in a position according to which the capsule is facing the interior of the container, is exposed and may come in contact with any type of contamination. Therefore, after repositioning a potentially contaminated capsule, the purity of the mixture of the first and second fluid inside the container can be greatly compromised.

Another disadvantage of the capsule disclosed in the prior art is that it does not provide any support for a fluid extraction device such as a pipette. In the event that the first fluid and the second fluid to be packaged, in the assembly consisting of the device and the capsule, are pharmaceuticals or cosmetics, it may be advantageous to use a pipette in order to extract the first fluid and / or the mixture of the first and the second fluid from the interior of the container to the exterior.

In view of the above observations, it appears that there is a need to improve the existing containers intended to contain a first fluid and able to cooperate with a capsule adapted to pour a second fluid and mix it with said first fluid. Object of the invention

The object of the invention is a capsule adapted to close the opening of a container, such as the neck of a bottle, in which said container is adapted to contain a first fluid, the capsule being adapted to contain a second. fluid, different from said first fluid, said capsule comprising a striker movable from a first initial position to a second open position and allowing, in said second position, to release said second fluid into the container, thus mixing the first fluid and the second fluid, said striker being in the form of a cylinder adapted to allow a fluid unloading device, such as a pipette, to pass through the capsule and to enter the container.

According to one embodiment of the invention, said capsule comprises fixing means, such as a rib, for fixing the capsule in the opening of the container.

According to one embodiment of the invention, said capsule, in the position of use of said capsule, on the side exposed towards the interior of the container, is delimited by a first cap, in which the firing pin is fitted, in its second open position, to open said cover.

According to one embodiment of the invention, the striker comprises, depending on the position of use of said capsule, at the end directed towards the outside of the container, a transverse wall adapted to cooperate with a pusher thus making it possible to advance said striker, from its initial position to its open position.

According to one embodiment of the invention, said transverse wall comprises at least part of the outer wall of said capsule, depending on its position of use.

According to one embodiment of the invention, the wall of said capsule exposed towards the outside of the container, according to the position of use of the capsule, is made of a flexible material to which the firing pin is fixed. According to one embodiment of the invention, the firing pin in the position of use of the capsule, on the side exposed to the outside of the container, is closed with the aid of a second cap

According to one embodiment of the invention, said second cap is adapted to be impacted using a fluid unloading device such as a pipette.

According to one embodiment of the invention, said second cap is adapted to be removed.

According to one embodiment of the invention, the first seal comprises an oxygen-impermeable material such as aluminum.

The present invention also relates to an assembly comprising a container, adapted to contain a first fluid, with an opening for filling and emptying said container, a stopper adapted to close said opening and a cap described above, in which the container is provided with fixing means such as a thread making it possible to fix said stopper on the container, wherein the interior of said stopper is provided with at least a first pusher adapted to push the capsule towards the interior of the opening of the container thereby fixing said capsule in said opening.

According to one embodiment of the invention, the interior of the stopper is provided with at least one second pusher adapted to cooperate with the transverse wall of the firing pin, thus making it possible to advance said firing pin, from its first initial position to its second position. opening.

Brief description of the drawings

The aim, object and characteristics of the invention will emerge more clearly on reading the following description given with reference to the figures in which: - [Fig. 1] shows a container, adapted to cooperate with the capsule according to the invention, said container being provided with a protective element,

- [Fig. 2] shows a pipette cap adapted to be fixed on the container according to Figure 1,

- [Fig. 3] illustrates the fixing, by screwing, of the pipette cap, according to Figure 2, to the container according to Figure 1,

[Fig. 4] shows the pipette cap attached to the container after the screwing step, as shown in Figure 2,

[Fig. 5] is a schematic view of the withdrawal of a determined quantity of fluid, contained within the container, using the pipette, said pipette being an integral part of the pipette cap,

[Fig. 6] illustrates the step of restoring the sample taken using the pipette, said pipette being an integral part of the pipette cap,

[Fig. 7] shows a sectional view of the attachment of the pipette cap on the container according to Figure 3,

[Fig. 8] shows a detailed view of the contact between the upper rim of the container, the body of the pipette cap and the capsule, during the step of fixing said pipette cap on said container,

[Fig. 9] illustrates a sectional view of the attachment of the pipette cap to the container, after complete insertion of the capsule inside said container,

[Fig. 10] shows a detailed view of the contact between the upper rim of the container, the body of the pipette cap and the capsule, at the moment when said capsule is inserted inside said container during the attachment of said pipette cap to the container,

[Fig. 1 1] shows a schematic view of the mixture between the first fluid contained in the container and the second fluid released from the capsule, [Fig. 12] illustrates a sectional view of the sampling of a determined quantity of fluid produced using the pipette,

[Fig. 13] shows an embodiment of a capsule according to the invention, in a top view,

[Fig. 14] shows the capsule according to Figure 1, in a bottom view,

- [Fig. 15] shows a sectional view of an assembly consisting of a container and a cap attached to the outlet of said container,

[Fig. 16] illustrates when the outer cap is removed, and [Fig. 17] shows the introduction of a graduated sampling pipette into the interior of the container.

FIG. 1 shows a container 1 adapted to cooperate with the capsule according to the present invention. According to Figure 1, the container 1 is provided with a protective element 2 to be removed before the use of said container 1. Upon removal of the protective element 2, a pipette cap 3, as shown in Figure 2, can be attached to said container 1. The interior of the pipette cap 3 comprises a capsule 10 according to the present invention. When the pipette stopper 3 is first attached to the container 1, the capsule 10 is simultaneously introduced inside said container 1. As described in more detail below, the capsule 10 is adapted to close the opening of the container. 1 and is provided with fixing means allowing it to be held when the latter is introduced into the container 1. In other words, the capsule 10 is transferred from the pipette cap 3 to the container 1 when it is first attached to the container 1.

The fixing of the pipette cap 3 on the container 1 is shown in Figure 3. First, the pipette cap 3 is positioned on the upper rim 1 1 of said container 1. A thread 12 present on the outside of the container 1 can then be used, in combination with a thread present inside the pipette cap 3 (as shown in figure 2), to screw said pipette cap 3 onto the container 1. During this screwing step, as explained below- above, the capsule 10 is fixed inside the container 1 near the upper rim 1 1 of said container 1. As illustrated in Figures 2 and 3, the pipette cap 3 is provided with an integral pipette 20, which pipette 20 is provided with a rod 21 adapted to penetrate inside the container 1. The pipette 20 is also provided with a head 22 allowing the user to withdraw a determined quantity of product present inside the container 1.

Figure 4 illustrates the pipette cap 3 fixed on the container 1. As shown in Figure 4, the user has direct access to the head 22 of the pipette 20 which can lower a piston 24 (see Figure 7) of the pipette 20, from its position as shown in Figure 4 in direction of the position as shown in Figure 5. When the piston 24 is depressed, the user can release the head 22 of said pipette 20 so that the latter returns to the position as illustrated in Figure 4. This movement allows the pipette 20 to be filled with a determined quantity of fluid. After filling the pipette 20, the user can unscrew the pipette cap 3 and allow the recovery of the sample taken by pressing on the head 22 of the pipette 20. FIG. 6 provides a schematic illustration of the recovery of a quantity of fluid.

According to the examples illustrated in Figures 4, 5 and 6, the piston 24 of the pipette 20 can move about 5 to 10 millimeters between the initial position shown in Figure 4 and the final position shown in Figure 5. According to the example illustrated in Figures 1 to 12, such a displacement corresponds to a quantity of fluid withdrawn from the container of approximately 1 to 2 Ml. This means that the user has, after taking a sample, a determined and relatively small quantity in the pipette 20 before restitution of said restricted quantity. An overdose of fluid is thus ensured using said pipette 20. It should be understood that a greater or lesser displacement is possible depending on the specific needs of the user and the characteristics of the fluid to be withdrawn from the container 1. .

The examples shown in Figures 7 to 12 illustrate, in more detail, the operation of the device described above.

Figure 7 shows a sectional view of the assembly consisting of the container 1 and the pipette cap 3. Figure 7 illustrates a first screwing of the pipette cap 3 on the container 1. First of all, the capsule 10 located inside the body 30 of the stopper pipette 3 comes into contact with the container 1 near the rim 11, which is illustrated in detail in FIG. 8. The capsule 10 is provided with a set of ribs 41, 42, 43 intended to come into contact with the inner wall of the container 1 next to the rim 1 1. The elastic deformation of said ribs 41, 42, 43 provides a force for fixing the capsule 10 inside the container 1. The vertical movement of said capsule 10 towards the interior of the container 1 is limited by the stop 44 adapted to come into contact with the rim 1 1 during the penetration of the capsule 10 into the container 1. The first fixing of the pipette cap 3 on the container 1 is ensured by means of a screwing made using the threads present on the one hand on the inside of the body 30 of the pipette cap 3 and, on the other , outside the container 1, below the rim 1 1. By screwing the pipette cap 3 on the container 1, the capsule 10 located inside the body 30 of the pipette cap 3 is fixed inside the container 10, as described above.

The pipette stopper 3 is provided with a pipette 20 forming an integral part of said pipette stopper 3. The pipette 20 is provided with a head 22 adapted to exert a pressure making it possible to depress a piston 24 relative to the body 30 in a rod 21. . When the pressure force ceases, the pipette 20 returns to its initial position thanks to the presence of a spring 23. The pipette 20 comprises a rod 21 adapted to extend towards the interior of the container 1 in order to come into contact with it. a fluid 51 present inside said container 1. The rod 21 is connected to the material of the body 30 and remains stationary relative to said body 30. The piston 24 functions as a sampling element movable inside the rod 21. The piston 24 can move relative to said rod 21 thanks to the pressure exerted on the head 22 of the pipette 20. The spring 23 is located between the rod 21 and the piston 24 thus allowing, thanks to the movement of said piston 24 relative to from said rod 21, the withdrawal of a determined quantity of fluid using the pipette 20.

Before mounting the pipette cap 3 on the container 1, as shown in Figures 2 and 7, the capsule 10 present inside the body 30 of the cap 3 is held in place using a friction force exerted by the inside of the capsule 10 on the outside of the rod 21. Said friction force is sufficient on the one hand to prevent any involuntary displacement of the capsule 10 relative to the rod 22 and, on the other hand, is sufficiently limited to allow the movement of the rod 21 relative to the capsule 10 as soon as said capsule 10 is correctly fixed inside the container 1.

The capsule 10 has three elements together forming a space suitable for containing a second fluid 52 inside said capsule 10. With reference to FIG. 8, the element has the shape of a cylindrical body 40, representing the outer wall. of the capsule 10. As described above, the cylindrical body 40 is provided with ribs 41, 42, 43 and a stopper 44. In the position, as shown in FIG. 8, the cylindrical body 40 is open in its lower end, which lower end is closed by a cover 60, the cover 60 being the second element forming the space suitable for containing the second fluid 52.

The third element of the capsule 10 is formed by a cylindrical element 45 acting as a firing pin. The lower part of said striker 45, that is to say the part directed towards the interior of the container 1 after assembly, is provided with a pointed end 46 adapted to perforate the cover 60 thus releasing the second fluid 52 The striker 45 is, at its upper end, that is to say the end directed towards the outside of the container 1 after assembly, connected to a transverse wall 47 forming the upper wall of the capsule 10. The transverse wall 47 is provided, at its outer end, with a sealing ring 48 adapted to come into contact with the inner walls of the cylindrical body 40. The sealing ring 48 exerts sufficient force on the inside of the body cylindrical 40, to ensure the seal between said cylindrical body 40 and said sealing ring 48. On the other hand, the frictional force between the cylindrical body 40 and the sealing ring 48 allows the assembly consisting of the striker 45, of the transverse element 47 and of the sealing ring tee 48 to move relative to the cylindrical body 40, when sufficient force is exerted on the transverse wall 47.

The lower end of the striker 45 is provided with an element 46 adapted to strike the cap 60. It should be noted that said striker 45 may include a projection 91 which allows it to exert, at a defined location, a determined force. against the rod 21. Said projection can have the function of a squeegee as soon as the capsule 10 is fixed inside the container 1 and as soon as a user withdraws the pipette 20 from said container 1. Thanks to the projection 91, excess fluid present on the outer wall of the rod 21 can be withdrawn from said outer wall and this before the pipette 20 leaves the container 1. The sealing ring 48 can also be provided with a projection 92 allowing said sealing ring 48 to exert a force against the inner wall of the cylindrical body 40.

With reference to FIG. 7, it should be noted that the interior of the body 30 of the stopper 3 is provided with an assembly composed of a first pusher 71 and a second pusher 72, which second pusher 72 being longer than the first pusher 71. The first pushers 71 are adapted to come into contact with the stop 44 and advance said stop against the rim 11. The second pushers 72 are, for their part, adapted to come into contact with the transverse wall 47 in order to move the assembly, consisting of the striker 45, the transverse wall 47 and the sealing ring 48 relative to the cylindrical body 40 , during the first assembly of the pipette cap 3 on the container 1. Thus, the pointed element 46 can perforate the cap 60 and release the second fluid 52, allowing mixing between the first fluid 51, already present inside the container 1, and the second fluid 52 present in the capsule 10.

Figure 9 illustrates the assembly of the container 1 and the pipette cap 3, when the capsule 10 has penetrated completely inside said container 1. As shown in more detail in Figure 10, the capsule 10, completely entered inside the container 1, and the three ribs 41, 42, 43 of the cylindrical body 40 have come into contact with the inner wall of said container 1, near the edge 1 1. After this first phase, as shown in FIGS. 9 and 10, the user can continue to screw the pipette cap 3 on the container 1 and, therefore, allow the pushers 72 to come into contact and exert a force on the transverse wall 47. By pushing the transverse wall 47, the striker 45 is also moved thus allowing the pointed member 46 to perforate the cover 60, as described above.

Figure 1 1 shows the end of the first assembly of the pipette cap 3 on the container 1, just before the mixing of the first fluid 51 and the second fluid 52. The striker 45 has perforated, using the pointed element 46, the cover 60, thus releasing the second fluid 52. It should be understood that this perforation phase is described from schematically, the movement of the second fluid 52 in the direction of the first fluid 51 being indicated by means of the arrow 80.

It should be noted that thanks to the operation of the capsule 10 and of the pipette 20, the fluid 52 cannot be expelled from the container 1 without being first mixed with the fluid 51. As a result, any risk of direct contact between the fluid. 52, in its pure state, and the skin of a user is thus avoided.

FIG. 12 represents a schematic view of the withdrawal of a determined quantity of fluid 51, 52 using the pipette 20. Pressure is exerted on the head 22 of the pipette 20 in order to push the piston 24 towards the bottom. of the container 1. After the step described in FIG. 12, the user can release the head 22, thus allowing the piston 24 to return to its initial position. The movement of the piston 24 relative to the rod 21 allows a determined amount of fluid 51, 52 to be drawn into the interior of the rod 21. After the sampling step, the pipette cap 3 can be removed from the container 1 in order to allow the return of said sample by pressing on the head 22 of the pipette 20, as shown in Figure 6.

Figure 13 shows a second embodiment of a capsule 101 according to the present invention, adapted to be attached to the opening of a container, said container itself being adapted to package a first fluid. As explained with reference to Figure 13, the interior of the capsule 101 is hollow and includes a space for receiving a second fluid.

The capsule 101 is shown in Figure 13 in a perspective top view. This means that the upper part visible in Figure 13 remains accessible when said capsule 101 is attached to the opening of a container.

The capsule 101 comprises an upper wall 110, provided with a flange 11 January, both being adapted to cooperate with the container on which said capsule 101 is fixed. The rim 1 1 1 has a diameter which is essentially similar to the diameter of the opening of the container on which the capsule 101 is fixed. This is more clearly shown in Figure 15. The capsule 101 has a longitudinal wall 120 which is shown in FIG. 14. Fastening means 121 are present on said longitudinal wall 120. According to the example, as shown in FIG. 13, said fastening means 121 present. on the capsule 101 have the form of circumferential members present on the outside of the longitudinal wall 120.

The fixing means 121 have the particularity of deforming, in a partially elastic manner, so that the end of the circumferential members exerts a certain force on the inside of the opening of the container on which the capsule 101 has been introduced, and this in order to ensure the seal on the end of the fixing means 121 and inside the opening of said container on which the capsule 101 is fixed.

According to an alternative embodiment (not shown in the figures), the fixing means 121 may be, for example, in the form of a thread making it possible to cooperate with fixing means present in the opening of a container. .

The upper wall 110 is provided with a recess in which is visible the upper part of a striker 140 having essentially a cylindrical shape. The shape of the striker 140 is more clearly shown in Figure 15. The upper end of the striker 140 is closed using a cover 141 provided with a tab 142 which facilitates the removal of said cover 141 by the user.

The cover 141 comprises a material, or a set of materials, specifically adapted to protect the second fluid inside the capsule 101. This or these materials are particularly adapted to prevent the second fluid from coming into contact with the capsule. oxygen. Aluminum is a particularly suitable material for the manufacture of gate 141.

As shown in Figure 13, the striker 140 is fixed near its upper end on a wall 150 made of a flexible material. In the present description, the term "flexible material" means that the wall 150 is adapted to be deformed to allow movement of the striker 140, from a first to a second position and the storage of a determined amount of energy which allows said striker to return to its initial position without altering the integrity of said wall 150.

FIG. 14 represents a perspective view of the capsule 101 according to FIG. 13, its lower end being directed upwards. Figure 14 shows that the lower end of the capsule 101 is closed using a cap 130. As shown in detail in Figure 15, said cap 130 is adapted to close an interior space present inside said capsule 101, which space being adapted to receive a second fluid. The cover 130 is also adapted to cooperate with the striker 140 and can be perforated by said striker 140 as soon as the latter is moved from a first starting position to a second opening position. Figure 15 shows in more detail the cooperation between the striker 140 and the cap 130.

Figure 15 shows the attachment and use of the capsule 101 present inside a container 102. A certain force is exerted on the capsule 101, to secure said capsule 101 in the head 103 of the container 102. When the capsule 101 fixed, its rim 1 1 1 is positioned on the upper end of the head 103 of said container 102.

FIG. 15 schematically represents the at least partially deformed position of the fixing means 121, said position allowing said fixing means 121 to seal off the space present between the outside of the capsule 101 and the inside the head of the container 102.

The container 102 is provided, within it, with a space 105 intended to receive a first fluid. The capsule 101 is also provided with an interior space 106, adapted to receive a second fluid. For obvious reasons of clarity, the first fluid and the second fluid are not shown in FIG. 15. The space 106, present inside the capsule 101, is delimited by an assembly made up of the wall of flexible material. 150, of the upper cover 141, of the longitudinal wall 120 of the capsule 101 and of the cover 130. As shown in FIG. 15, the striker 140 is provided, at its lower end, with a pointed rim. The seal 130 preferably has the same ability to protect the second fluid as the seal 141 described above.

The functionality of the capsule 101, as shown in Figures 13, 14 and 15 are as follows.

The container 102, provided with a capsule 101, can, before its first use, be closed with a stopper (not shown in FIG. 15). A stopper of this type can, for example, be fixed on a thread 107 present on the outside of the head 103 of the container 102. During the first use, the user removes the stopper in order to access the upper part of the container. capsule 101. As shown with arrow 160, the user can exert some pressure on the upper part of firing pin 140 with their finger. This means that the user exerts a thrust on the striker 140 at the level of the cover 141. Thanks to the presence of a flexible material wall 150, the striker 140 can be moved from the position as shown in FIG. 15. in the direction of the cover 130. The user moves the striker 140 until the moment when the cover 130 is pierced by the pointed edge of said striker 140. When said cover 130 is pierced, the second fluid present within the capsule 101 is released and can flow within the space 105 and mix with the first fluid already present within said space 105. The release of the second fluid to the space 105 is schematically represented using the arrows 170 visible. in figure 15.

When the first fluid and the second fluid have been mixed, as described in the paragraph above, the container 102 can be agitated in order to achieve an optimal mixing of the two fluids. During this mixing action, and thanks to the presence of the cap 141 closing off the upper part of the striker 140, there is no risk of said mixture leaking from the container 102.

In order to release the mixture of the two fluids present in the container 102, a next step consists in removing the cover 141. This is shown in FIG. 16. When the cover 141 is removed, the upper end of the striker 140 is accessible. to the user so that the latter can access the interior of the container 102. The striker 140 having essentially a cylindrical shape, the latter becomes, in one step following, a guide for an extraction device such as a pipette. The use of such a pipette is shown in Figure 17.

According to an alternative embodiment (not shown in the figures), the cap 141 can be adapted to be perforated using an extraction device.

According to the example of FIG. 17, a stopper 108 is positioned on the outer end of the head 103 of the container 102. The stopper 108 closes the upper end of said container 102 and has the function of guiding a pipette 109, of the 'outside towards the inside of the container 102. The pipette 109 is guided, by means of the stopper 108 and the striker 140, from the outside of the container 102 towards the inside in order to come into contact with the mixture of fluids. present within the space 105 of the container 102. The pipette 109 is provided with a head 191 which, according to one embodiment, may be made of a flexible material. Said flexible material allows the user to deform said head 191 in order to aspirate and extract a certain amount of the fluid present inside said pipette 109.

The pipette 109 can be provided with a marking 192 allowing a determined sample, according to one of the graduations of said marking 192. When a determined quantity of fluid is extracted from the container 102 using the pipette 109, said pipette can be repositioned in the stopper 108, thus closing the upper end of the assembly of the container 102 and of the stopper 108 and making it possible to prevent the contents of said container 102 from coming into contact with the ambient air.

According to an alternative embodiment, not shown in FIG. 17, the upper part of the stopper 108 and the lower part of the head 191 of the pipette 109 can be provided with a “bayonet” type system making it possible to fix said pipette 109. in a defined position with respect to the plug 108.

Claims

1. Capsule (10, 101) adapted to close the opening of a container (1, 102), such as the neck of a bottle, in which said container (1, 102) is adapted to contain a first fluid ( 51), the capsule (10, 101) being adapted to contain a second fluid (52), different from said first fluid (51), said capsule (10, 101) comprising a striker (45, 140) movable from a first position initial to a second open position and allowing, in said second position, to release said second fluid (52) in the container (1, 102), thus mixing the first fluid (51) and the second fluid (52), said striker (45, 140) in the form of a cylinder adapted to allow a fluid discharge device (20, 109), such as a pipette, to pass through the capsule (10, 101) and enter into the container (1, 102).

2. Capsule (10, 101) according to claim 1, wherein said capsule (10, 101) comprises fixing means (41, 42, 43, 121), such as a rib, for fixing the capsule (10 , 101) in the opening of the container (1, 102).

3. Capsule (10, 101) according to claims 1 or 2, wherein said capsule (10, 101), in the position of use of said capsule (10, 101), at the side exposed towards the interior of the container ( 1, 102), is delimited by a first cover (60, 130), the striker (45, 140) being adapted, in its second open position, to open said cover (60, 130).

4. Capsule (10) according to one of claims 1 to 3, the striker (45) comprising, according to the position of use of said capsule (10), at the end directed towards the outside of the container (1). , a transverse wall (47) adapted to cooperate with at least one pusher (72) thus making it possible to advance said striker (45) from its initial position to its open position.

5. Capsule (10) according to claim 4, said transverse wall (47) comprising at least part of the outer wall of said capsule (10), according to its position of use.

6. Capsule (101) according to claims 1, 2 or 3, the wall (150) of said capsule (101) exposed outwardly of the container (101), according to the position of use of the capsule (101), being made of a flexible material to which the striker (140) is fixed.

7. Capsule (101) according to claim 6, wherein the firing pin (140) in the position of use of the capsule (101), on the side exposed to the outside of the container (102), is closed using of a second cover (141).

8. Capsule (101) according to claim 7, said second cap (141) being adapted to be impacted with the aid of a fluid discharge device (109) such as a pipette.

9. Cap (101) according to claims 7 or 8, said second cap (141) being adapted to be removed.

10. Capsule (101) according to claims 7, 8 or 9, the second cover (141) comprising an oxygen-impermeable material such as aluminum.

11. The capsule (101) of claim 3, wherein the first cover (60, 130) comprises an oxygen impermeable material such as aluminum.

12. Assembly comprising a container (1), adapted to contain a first fluid (51), with an opening making it possible to fill and empty said container (1), a stopper (3) adapted to close said opening and a capsule (10 ) according to one of claims 4 to 5, in which the container (1) is provided with fixing means such as a thread (12) enabling said stopper (3) to be fixed on the container (1), in which the the interior of said stopper (3) is provided with at least a first pusher (71) adapted to push the capsule (10) towards the interior of the opening of the container (1) thus fixing said capsule (10) in said opening .

13. The assembly of claim 12, wherein the interior of the plug (3) is provided with at least one second pusher (72) adapted to cooperate with the transverse wall (47) of the striker (45) thus allowing to advance said striker (45), from its first initial position to its second open position.