• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    LIQUID DISTRIBUTION DEVICE AND LOT OF TWO DEVICES The liquid dispensing device comprises: a reservoir (12) for storing the liquid to be dispensed, a dispensing nozzle (10) mounted on the reservoir, provided with a support (14) and a liquid distribution valve (16), this valve being able to make a blocking configuration and a liquid passing configuration, in cooperation with the support (14), a flow rate reduction organ (20), comprising a form (74) of liquid diversion delimiting a flow rate reduction channel (76), this flow rate reduction organ (20) being a separate part of the support (14) and distinguishing from the valve (16) .
    公开号:BR112012005391B1
    申请号:R112012005391-4
    申请日:2010-09-09
    公开日:2021-01-05
    发明作者:Gaetan Painchaud；Guillaume Grevin；Thierry Decock；Xavier Julia
    申请人:Nemera La Verpilliere；
    IPC主号:
    专利说明:

    [001] The invention relates to the domain of liquid distribution, notably in the form of drops in the pharmaceutical domain, for example, ophthalmic or auricular liquid.
    [002] Liquid distribution devices with a reservoir and a distribution nozzle mounted on the reservoir are already known, this nozzle being provided with a support and a closing element. For example, in US 2007/0210115, the dispensing nozzle comprises a support within which a closing element is displaceable between a blocking configuration and a liquid passage configuration. This closing element, on the other hand, comprises, at its distal end, in the immediate proximity of the liquid release orifice, a way of reducing the liquid flow rate. This form of reduction comprises a helically shaped channel, with a small section and allowing the liquid to be diverted to generate a loss of loads when a user leans on the reservoir. Thanks to this way of reducing the flow rate, it avoids distributing the liquid in the form of jets.
    [003] The inventors at the origin of the present invention have found that a difficulty lies in the fact that the way of reducing the liquid flow rate is carried out in the same part as the form ensuring the blocking or passage of the liquid. In fact, such a configuration requires that the valve and the support have very precise dimensions, because it is necessary to authorize a displacement of the valve in relation to the support at the same time, to ensure the passage of liquid, and a cooperation between the form of diversion and the support narrow enough to obtain a bypass channel that does not leak, in this case the effect of reducing the flow rate could not occur. Now, it is delicate to make the pieces requiring such precision of dimensions.
    [004] The present invention has as main objective to propose a distribution device ensuring a reduction of the liquid flow rate while guaranteeing a satisfactory operation of liquid distribution.
    [005] For this purpose, the invention has as its object a liquid distribution device, comprising: - a reservoir for the storage of the liquid to be distributed, - a distribution nozzle mounted on the reservoir, provided with a support and a liquid distribution valve, this valve being able to take a blocking configuration and a liquid passage configuration, in cooperation with the support, - a so-called flow rate reduction organ, comprising a form of liquid diversion delimiting a channel of flow rate reduction, this flow rate reduction organ is a separate part of the support and distinct from the valve.
    [006] It is proposed to perform the function of reducing the flow rate through a third part, separate from the valve and the support, that is, separable from the valve and the support, or at least separated from the two others before the assembly of the device. By intervening a separate part to ensure the limitation of the liquid flow rate, the parts of the nozzle that ensure the tightness of the device, by blocking or passing liquid, are dissociated and those that ensure the reduction of the flow rate. In effect, the reduction being ensured by a third piece, not being in direct proximity to the sealing part realized by cooperation of the valve and the support, the sealing function can be ensured independently of the flow rate reduction function. Also, each function is optimally and reliably ensured. Although it can be expected that the assembly of the device would be more complicated, due to the fact that a new adjusted part is added, the assembly is simplified, due to the fact that the flow rate reduction zone is no longer dependent on the shape valve and support forming the device's tightness. Consequently, it is easier to modify the length or diameter of this form of flow rate reduction. On the other hand, due to the fact that the reduction in flow rate is not ensured in the nozzle sealing area, the nozzle may have a shorter length, and thus allow for more compact nozzles.
    [007] As the functions are decoupled, manufacturing is facilitated, since variations in dimension of the parts have less effect on the functioning of the device. This is advantageous because, for very high levels of precision, industrial difficulties arise, such as the fragility of the tools or the breaking of the mold.
    [008] On the other hand, a particular advantage lies in the fact that it is easily possible to adapt the device according to the type of liquid that is distributed. Indeed, according to the viscosity of the liquid, the flow rate reduction channel must have a particular configuration. For example, a liquid reduction channel is provided having a larger diameter for very viscous liquids. Now, as the flow rate reduction organ is a separate piece, to adapt the distribution nozzle according to the type of liquid to be distributed, it is sufficient to modify only the shape of the flow rate reduction organ, without having to modify for both the shape of the valve or the support, which can therefore have a standard shape. On the other hand, as the flow rate decrease is ensured by a separate part, devices can be provided at the same time with the function of reducing the flow rate and devices that do not have the same, the only difference between these devices the presence or not of the flow rate reduction organ.
    [009] It is noted that the adaptation of the device according to the viscosity of the product is particularly interesting, due to the fact that products such as ophthalmic products tend to become increasingly viscous, especially for products that do not include a preservative agent.
    [010] “Flow rate reduction” means the fact that the liquid's flow rate is reduced to the same pressure applied by the user on the reservoir. This flow rate reduction is preferably generated by a channel having a smaller section than the other flow channels provided on the device and / or extending over a long length and / or having a transverse axis.
    [011] Advantageously, one can take advantage of the flow rate reduction organ to occupy a space in the device, and thus limit a dead volume located in the dispensing nozzle, the dead volume being a source of bacteria development.
    [012] The distribution device may, on the other hand, include one or more of the following characteristics. - The support comprises a reception housing for the flow rate reduction organ delimiting, with the latter, the flow rate reduction channel. This housing can, for example, be arranged opposite the part of the support that ensures the tightness of the device, in order to further limit the interactions between flow rate limitation and tightness. Preferably, this receiving housing has a substantially cylindrical shape, delimiting a volume cavity substantially complementary to the volume of the flow rate reducing member. - The flow rate reduction organ has a substantially cylindrical shape, the deviation form being performed on the external periphery of the flow rate reduction organ and comprising a helical groove. This helical shape of the channel provides a transverse flow direction, not parallel to the direction of liquid ejection, while providing a relatively long channel length, which allows a loss of pressure while occupying a minimum place in the device. - The flow rate reduction organ has a substantially cylindrical shape, the deviation form being carried out on the external periphery of the flow rate reduction organ and comprising a groove defining angular portions. These angular portions allow to define a trajectory with clear changes of direction, which disturbs the flow of liquid and causes greater pressure loss. - The flow rate reduction member has a substantially cylindrical shape, the deflection form being carried out on the external periphery of the flow rate reduction member and comprising a rectilinear groove, preferably substantially parallel to the cylinder axis of the reduction member flow rate. Due to the geometric characteristics of the groove, notably the dimensions of its section, the flow of liquid is disturbed and causes a loss of pressure that can prove to be sufficient to reduce the flow rate. - The flow rate reduction organ has a substantially cylindrical shape, the deflection form being carried out on the external periphery of the flow rate reduction organ and comprising a network of several grooves comprising at least one interconnection of the confluence of the grooves. The fluid flows from the different grooves are found at the confluence meeting level. This creates a zone of turbulence that causes a high pressure drop. - The support comprises a sealing part, carrying a support surface of the valve to block the passage of liquid in blocking configuration, the sealing part having a substantially cylindrical shape and the support surface being arranged at the distal end of this cylindrical shape. This sealing part is substantially in the form of a plug for sealing a hole arranged in a corresponding sealing part of the valve. - The valve comprises a substantially cylindrical part, covering a complementary cylindrical shape of the support, and delimiting with the support a liquid passage channel, disposed downstream of the flow rate reduction channel. - The valve comprises a permanent fixing part of the valve on the support, and a part having substantially the shape of a disc, from which the cylindrical part projects. - The valve comprises an elastomeric material, as well as possibly a rigid part, for example, serving as a spring support requesting the valve in a liquid blocking position. - The support comprises, on the other hand, an air passage channel in the reservoir, equipped with a hydrophobic filter.
    [013] As can be seen, the support can participate in several functions in the nozzle, namely, the tightness function, the liquid reduction function, the valve fixing function and / or the air passage function for the aeration of the reservoir.
    [014] The invention, on the other hand, has as its object a batch of two devices as presented above, each of the two devices having a valve and a support in the same way and a flow rate reduction organ in a different way. For example, the flow rate reduction channel may have a different section, a different length, or a different shape.
    [015] The invention will be better understood by reading the following description, given solely as an example and made with reference to the attached drawings in which: - figure 1 is a longitudinal sectional view of a distribution device according to an embodiment; figure 2 is a partial longitudinal cross-sectional view of a dispensing device according to a second embodiment; and - Figures 3a to 3f are viewed from the side of a flow rate reduction member according to different variants.
    [016] In figure 1 a nozzle 10 for distributing liquid in the form of drops was shown, intended to be mounted by screwing on the neck of a reservoir 12 represented in stippling. This reservoir 12 is a storage reservoir for pharmaceutical liquid, such as ophthalmic or auricular liquid. The distribution of liquid is done by pressure, by a user, on the body of the reservoir 12, the latter being able to show some elasticity to return to its initial shape after the pressure exerted by the user.
    [017] The dispensing nozzle 10 comprises, in this example, a support 14, a dispensing valve 16, a spring 17, a cover 18, a flow rate reducing organ 20 and a hydrophobic filter 22.
    [018] The valve 16, the support 14 and the flow rate reduction member 20 constitute separate parts, that is, fixed with respect to each other, that is, separated before assembly.
    [019] The support 14 comprises, in this example, a fastening part 24 on the reservoir, disposed on the proximal end of the support 14. This part 24 comprises an external skirt 26, threaded so as to be screwed on the neck of the reservoir 12. The fixing part 24, on the other hand, comprises an inner skirt 28 in a tubular shape, allowing to ensure the tightness between the reservoir 12 and the dispensing nozzle 10.
    [020] The support 14 also comprises a housing 30 for receiving the flow rate reduction member 20, delimiting a substantially cylindrical cavity, this cavity opening at its proximal end over the reservoir 112 and at its distal end over a first channel 32 of liquid passage, arranged in the support 14 and extending in the longitudinal direction of the device, here corresponding to the direction of liquid ejection illustrated by the arrow 34. This first channel 32 opens over an intermediate cavity 34, opening itself , on a second channel 36 for passing liquid.
    [021] The support 14 comprises, on the other hand, a central part of tightness 38, in a substantially cylindrical shape and extending in the distal direction, opposite to the inner skirt 28. The part 38 carries, on its distal end, a surface 40 valve support plate 16 to block the passage of liquid in blocking configuration. In this example, the support surface 40 takes the form of an annular bead.
    [022] The support 14 also includes, in this example, an air passage channel 42 in the reservoir 12, opening over a housing 44 in which the hydrophobic filter 22 is received. The housing 44 is juxtaposed to the housing 30 receiving the organ 20 flow rate reduction, being separated by a central wall 46, extending in a direction opposite to the sealing part 38.
    [023] Finally, the support 14 comprises a part 48 for fixing the valve 16 on the support 14. This part 48 also serves as a part for fixing the cover 18 on the support 14. It comprises an annular groove 50 delimited on the periphery by an annular wall 52. The annular groove 50, on the other hand, is delimited, on its internal periphery, by an annular rib formed on a wall forming a disc, through the channel 32 and delimiting the cavity 34.
    [024] The valve 16 can take a blocking configuration and a liquid passage configuration, in cooperation with the support 14. It is made, in this example, of an elastomeric material. According to another example, only part of the valve 16 is made of an elastomeric material, the other part being made of a more rigid material, which can serve as support for the spring 17. The valve 16 comprises a part 54 for fixing to the support 14 , forming a skirt with a substantially tubular shape. This fixing part 54 is connected to a cap 56 having substantially the shape of a disk and from which a central part 58 substantially cylindrical projects. The cover 56 also includes a seat 57 supporting the spring 17. The part 58 defines an internal cavity in a substantially cylindrical shape, complementary to the pin 38. The pin 38 and the cylindrical part 58 are coaxial and delimit the passage channel 36 together. This passage channel 36 opens over an outlet channel 60 realized at the distal end of the valve 16, opening itself in a form 62 of droplet formation.
    [025] The cover 18 comprises a fixing part 64 on the annular support 14, as well as another annular part 66, coaxial with the part 64, in order to define a groove 68 in which the annular wall 52 is embedded. The cover 18 comprises, on the other hand, a seat 70 supporting the spring 17, extended over its internal periphery by an annular wall 72, crossed by part 58 and having a centralizing function of part 58 of valve 16.
    [026] The flow rate reduction organ 20 comprises a liquid diversion form 74, delimiting, with the housing 30, a flow rate reduction channel 76. The flow rate reducing member 20 can take, for example, one of the shapes illustrated in figures 3a to 3f. It has a substantially cylindrical shape, the form of deviation 74 being carried out on its external periphery, forming a recess of the periphery.
    [027] In the examples of figures 3a, 3b, shape 74 is defined by a helical groove 74a, 74b that surrounds cylinder 20, preferably several turns if the liquid is low viscous. Groove 74a has a larger section than groove 74b, and is adapted to liquids of greater viscosity than groove 74b.
    [028] The organs 20 of figures 3c and 3d illustrate other types of grooves 74c, 74d, which do not complete all the way around the cylindrical part of the organ 20 and which define angular portions, here at right angles, with the effect of reducing the pressure of draining liquid. Eventually, the organ 20 may comprise, on other parts of its peripheral wall, grooves similar to the grooves 74c, 74d, which has the effect of increasing the flow rate of the liquid.
    [029] The organ 20 of figure 3e illustrates a straight 74e groove substantially parallel to the axis of the cylindrical part. In a variant, the organ 20 comprises several grooves 74e divided over the peripheral wall assembly of the organ 20. In another variant, the groove (s) 74e are inclined with respect to the axis of the cylinder.
    [030] The organ 20 of figure 3f illustrates a network of 74f-h grooves comprising a 74i interconnection of the 74f-h grooves. The network comprises grooves 74f-g, of this upstream, located upstream of interconnection 74i and at least one groove 74h, said downstream, located downstream of interconnection 74i. As a variant, the network will comprise more than two grooves upstream 74f-g, more than one groove downstream 74h and one more interconnection 74i.
    [031] The operation of the device in figure 1 will now be described.
    [032] At rest, that is, when no user rests on the reservoir 12, the valve 16 is in a liquid blocking configuration, that is, it is in support on the surface 40, due to its permanent fixation on the support 14, exerting an elastic tension on the valve, and under the effect of the pressure made by the spring 17.
    [033] When a user leans on the reservoir 12, he exerts a pressure on the fluid that flows in the single channel allowing its flow (the hydrophobic filter 22 not allowing the liquid to escape), namely, the reduction channel 76 flow rate. During its passage in this channel 76, the fluid sees its flow rate decrease, due to the loss of pressure. The fluid then flows into channel 32, then into cavity 34 and channel 36. Under the effect of pressure, the liquid lifts the membrane 16 which then passes in a liquid passage configuration and can thus flow between the membrane 16 and the support surface 40, in order to pass through channel 60 and cavity 61, and thus appear in the form of a drop.
    [034] It should be noted that the flow rate reduction organ 20, being a separate piece, may have a shape that varies depending on the liquid contained in the reservoir. Thus, the housing 30 is adapted to receive different forms of organ 20, as illustrated in figures 3a to 3f. It is therefore possible to manufacture batches comprising nozzles having the same valve 16, the same support 14, the same cover 18, but having different organs 20.
    [035] Nozzle 10 can take different configurations from that illustrated in figure 1, such as that illustrated in figure 2.
    [036] The nozzle in figure 2 has functionalities analogous to those in figure 1, except that it does not contain air passage channel 42. In this embodiment, the reservoir 12 is preferably a non-elastic deformable reservoir, although it is not necessary to pass air to occupy the depression generated by the user when resting on the reservoir. Thus, in this example, the housing 30 is arranged in the center of the support 14, and the flow rate reducing member 20 may have a larger diameter.
    [037] Note that the invention is not limited to the previously described embodiment.
    权利要求:
    Claims (8)
    [0001]
    1. Liquid dispensing device comprising - a reservoir (12) for storing the liquid to be dispensed, - a dispensing nozzle (10) mounted on the reservoir, provided with a support (14) and a valve (16) liquid distribution, this valve comprising an elastomeric material and being able to take a blocking configuration and a liquid passage configuration, in cooperation with the support (14), - a flow rate reduction organ (20), comprising a form (74) liquid diversion delimiting a flow rate reduction channel (76), this flow rate reduction organ (20) being a separate part of the support (14) and distinct from the valve (16), characterized by the fact that - the support (14) comprises a sealing part (38), carrying a support surface (40) of the valve (16) to block the passage of liquid in a blocking configuration, the sealing part (38) having a substantially cylindrical shape and the supporting surface o (40) being arranged at the distal end of this cylindrical shape (38) and the valve (16) comprises a substantially cylindrical part (58), covering the cylindrical shape (38) and delimiting with this cylindrical shape (38) a channel (36 ) of liquid passage, arranged downstream of the flow rate reduction channel (76).
    [0002]
    2. Device according to the preceding claim, characterized by the fact that the support (14) comprises a housing (30) for receiving the flow rate reduction organ (20) delimiting, with the latter, the channel (76) of flow rate reduction.
    [0003]
    Device according to any one of the preceding claims, characterized by the fact that the flow rate reduction organ (20) has a substantially cylindrical shape, the deviation shape (74) being carried out on the external periphery of the organ (20 ) of reducing the flow rate and comprising a helical groove (74a, 74b).
    [0004]
    Device according to any one of claims 1 to 2, characterized by the fact that the flow rate reduction member (20) has a substantially cylindrical shape, the deviation form being carried out on the outer periphery of the reduction member flow rate (20) and comprising a groove (74c, 74d) defining angular portions.
    [0005]
    Device according to any one of claims 1 to 2, characterized by the fact that the flow rate reduction member (20) is substantially cylindrical in shape, the deflection form being carried out on the outer periphery of the reduction member flow rate (20) and comprising a straight groove (74e), preferably substantially parallel to the cylinder axis of the flow rate reducing member (20).
    [0006]
    Device according to any one of claims 1 to 2, characterized in that the flow rate reduction member (20) has a substantially cylindrical shape, the deflection form being carried out on the outer periphery of the reduction member flow rate (20) and comprising a network of several grooves (74f, 74g, 74h) comprising at least one interconnection (74i) of confluence of the grooves (74f, 74g, 74h).
    [0007]
    Device according to any one of claims 1 to 6, characterized in that the support (14) comprises, on the other hand, an air passage channel (42) in the reservoir (12), equipped with a hydrophobic filter (22).
    [0008]
    8. Lot of two devices according to any one of claims 1 to 7, characterized by the fact that each of the two devices having a valve (16) and a support (14) in the same way and a reducing member (20) flow rate differently.
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    法律状态:
    2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-08-27| B25D| Requested change of name of applicant approved|Owner name: NEMERA LA VERPILLIERE (FR) |
    2020-01-28| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-11-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-01-05| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 05/01/2021, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    FR0956279|2009-09-11|
    FR0956279A|FR2950037B1|2009-09-11|2009-09-11|DEVICE FOR DISTRIBUTING LIQUID|
    PCT/FR2010/051878|WO2011030063A1|2009-09-11|2010-09-09|Liquid dispensing device|
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