EP4091721A1 - Distributeur de liquide et bouchon de protection pour un distributeur de liquide - Google Patents

Distributeur de liquide et bouchon de protection pour un distributeur de liquide Download PDF

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Publication number
EP4091721A1
EP4091721A1 EP21174812.4A EP21174812A EP4091721A1 EP 4091721 A1 EP4091721 A1 EP 4091721A1 EP 21174812 A EP21174812 A EP 21174812A EP 4091721 A1 EP4091721 A1 EP 4091721A1
Authority
EP
European Patent Office
Prior art keywords
protective cap
fastening part
liquid dispenser
inner part
following additional
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21174812.4A
Other languages
German (de)
English (en)
Inventor
Jürgen Greiner-Perth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aptar Radolfzell GmbH
Original Assignee
Aptar Radolfzell GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aptar Radolfzell GmbH filed Critical Aptar Radolfzell GmbH
Priority to EP21174812.4A priority Critical patent/EP4091721A1/fr
Priority to US18/559,364 priority patent/US20240239569A1/en
Priority to CN202280036088.5A priority patent/CN117355377A/zh
Priority to PCT/EP2022/062112 priority patent/WO2022243047A1/fr
Priority to JP2023569689A priority patent/JP2024518789A/ja
Publication of EP4091721A1 publication Critical patent/EP4091721A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D51/00—Closures not otherwise provided for
    • B65D51/16—Closures not otherwise provided for with means for venting air or gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
    • B05B11/0032—Manually actuated means located downstream the discharge nozzle for closing or covering it, e.g. shutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/0005—Components or details
    • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
    • B05B11/0064—Lift valves
    • B05B11/0067—Lift valves having a valve seat located downstream the valve element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
    • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
    • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
    • B05B11/1001—Piston pumps
    • B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke

Definitions

  • the invention relates to a liquid dispenser and in particular to its protective cap.
  • a generic liquid dispenser has a liquid reservoir that can be filled with a pharmaceutical liquid in particular.
  • the liquid dispenser is used to deliver the liquid through a discharge opening, for example in the form of drops that are applied to a patient's eyes.
  • a generic liquid dispenser has a protective cap that is placed on a housing of the liquid dispenser when it is not in use.
  • the protective cap protects the discharge opening from external mechanical influences.
  • it can fulfill other functions, such as in particular ventilation of the discharge opening or absorption of residual liquid at the discharge opening.
  • a protective cap of the generic type rests sealingly on a housing of the liquid dispenser when it is in place. If the protective cap is removed, this sealing point is interrupted, but the relative movement of protective cap and housing is made more difficult by the friction prevailing at the sealing point and abrasion can occur here, which worsens the sealing effect when the cap is replaced.
  • a protective cap which has an inner cap and an outer cap.
  • the inner cap When fitted, the inner cap surrounds the discharge opening and is secured to a housing of the liquid dispenser by means of a screw connection.
  • the outer cap is initially movable relative to the inner cap, namely in a superimposed rotational and linear movement. This relative movement allows a path to be opened for residual liquid to escape from the dispensing opening when the cap is on.
  • a protective cap which has an absorption buffer inserted into a ring body to facilitate assembly in the protective cap.
  • the object of the invention is to provide a liquid reservoir and its protective cap, which enable a repeatedly good liquid seal and still allow the protective cap to be removed easily.
  • a liquid dispenser for this purpose which, in a known manner, has a liquid reservoir in which the liquid is stored before it is discharged. Depending on the intended use, this preferably has a volume of less than 200 ml, in particular less than 50 ml.
  • the liquid dispenser also has a housing and a discharge opening through which the liquid can be discharged into an environment.
  • the discharge opening can break through the housing directly or be provided on an actuating push-button that can be moved relative to the housing.
  • a pumping device is preferably provided for conveying liquid from the liquid reservoir to the discharge opening. This can be actuated by the actuating button mentioned. However, it is particularly advantageous if an actuating button, separate from the discharge opening, is provided for actuating the pump device, in particular preferably laterally on a lateral surface of the housing.
  • the liquid dispenser is preferably designed to dispense pharmaceutical liquids. Accordingly, the liquid reservoir is preferably filled with such a liquid in the delivery state.
  • other fields of application are also included, in particular cosmetic liquids, technical liquids and foodstuffs.
  • the design of a liquid dispenser according to the invention is designed for dispensing drops.
  • the discharge opening is assigned a drop formation contour downstream of the discharge opening.
  • the liquid collects here in order to then be released as drops, for example for application in an eye.
  • pharmaceutical liquids which are dispensed in the form of drops and which accordingly collect as intended on an outer surface of the dispenser during use, there is a risk of contamination of the residual liquid.
  • a liquid dispenser according to the invention has a protective cap according to the invention. When fitted, this protective cap protects the discharge opening and can be removed for the purpose of discharging the liquid, in particular by unscrewing it from the housing for this purpose.
  • the protective cap has at least two components, namely a fastening part and an inner part.
  • the fastening part is designed to be coupled to the housing of the liquid dispenser.
  • the main function of the fastening section is therefore the mechanical coupling of the protective cap to the housing, for example in the case of a screw cap by means of a thread or in the case of a plug-in cap by means of a clamping area which enters into a frictionally holding clamping connection with an outer contour of the housing.
  • the protective cap also has the mentioned inner part, which is separate from the fastening part. This surrounds the discharge opening when the protective cap is in place. For this purpose, together with the surfaces surrounding the discharge opening, it forms a discharge opening space and seals it off from the housing or an actuating push-button of the liquid dispenser.
  • the inner part is captively coupled to the fastening part by means of a coupling device, it being freely rotatable relative to the fastening part about a longitudinal axis of the protective cap.
  • the design of the cap with a fastening part and an inner part, which are attached to one another so that they can rotate about the longitudinal axis leads to a number of advantages.
  • it brings about a decoupling which is particularly advantageous with regard to the sealing point formed by the inner part.
  • the fastening part can, for example when unscrewing a protective cap designed as a screw cap, at least initially rest against the housing in a rotationally fixed manner, while the fastening part is already being displaced and twisted. This avoids abrasion at the sealing point.
  • cap removal is also simplified since immediate force or moment is no longer required to overcome friction at the sealing point.
  • initially only the fastening part is twisted. Only when this has been displaced axially relative to the housing over a certain distance does a resulting tensile force act indirectly on the inner part with sufficient strength to pull it off the housing. The effort required to loosen the screw coupling or plug-in coupling between the housing and the fastening part is thus decoupled in terms of time from the effort required to loosen the inner part from the housing.
  • Another advantage of the separate design of the inner part and fastening part is the possibility of using different materials. In this way, materials that are well adapted to the main function can be used.
  • the choice of material for the fastening part can in particular take place with regard to the fastening function.
  • a relatively hard plastic with a low-friction surface is therefore advantageous for the thread.
  • a relatively soft material is advantageous for the inner part and its main function of sealing with the housing.
  • a further advantage of the separate design of the inner part and the fastening part is given when the inner part can be tilted at least to a limited extent in relation to the fastening part. This ensures that even if the fastening part is pushed on or screwed on at a slight angle, this does not result in the inner part also being placed on at an angle and thus in a worsened sealing effect. Rather, the inner part can align itself decoupled from the fastening part, in particular through a conical shape corresponding to the housing or otherwise widening towards the open end, and thus achieve an ideal sealing effect.
  • the risk is also reduced that a mechanical load on the fastening part forming an outer sleeve impairs the sealing effect at the sealing point between the housing and the protective cap.
  • a mechanical impact on the fastening part causes a displacement relative to the inner part rather than a sealing point between the inner part and the housing of the liquid dispenser being unintentionally opened.
  • the mobility of the inner part relative to the fastening part is not limited to rotational mobility and possibly tilting mobility, but in particular axial mobility can also be provided.
  • the inner part can be moved axially by at least 0.5 mm, preferably by at least 1 mm, relative to the fastening part between two end positions. This has the effect that when the protective cap is pulled off or unscrewed, the sealing point is only released when the fastening part has already been displaced axially by a corresponding distance in relation to the housing.
  • the fastening part defines a receiving space in which the inner part is arranged captively.
  • This receiving space is toward an open end of the fastening part, ie pointing in the direction of the actual dispenser or its liquid reservoir, preferably closed off by an inwardly pointing retaining edge, which is provided in particular on a circumferential and inwardly pointing web.
  • the holding edge has a clear cross-section that is smaller than the outer diameter of the inner part, so that the inner part is pressed over this during assembly, in particular by means of insertion bevels provided on the retaining edge, and then snaps into the receiving space.
  • the receiving space is preferably delimited by an end wall of the fastening part.
  • the holding edge on the fastening part is preferably designed as a circumferential holding edge with a uniform inner diameter.
  • the retaining edge on the fastening part can also be formed by a plurality of retaining edge sections which are arranged in a circumferentially offset manner.
  • a retaining edge which interacts with the retaining edge on the fastening part and which in particular preferably defines a uniform outer diameter all around.
  • the retaining edge of the inner part is provided on a peripheral web that projects outwards.
  • the protective cap preferably has a ventilation path via which the discharge opening is connected to an atmosphere surrounding the liquid dispenser when the protective cap is in place. This means that even when the protective cap is on, air can penetrate into the discharge opening space and promote the rapid drying of residual liquid at the discharge opening.
  • the ventilation path is preferably realized in that the fastening part and the inner part each have at least one opening.
  • the ventilation path extends through these two openings.
  • the openings are each provided on an end face of the inner part and the fastening part.
  • the protective cap preferably has a sterile filter arranged in the ventilation path. This can be provided in the area of the opening in the fastening part and can filter the air flowing through this opening. Particularly preferably, however, the sterile filter is provided at the opening in the inner part and spans this. When the protective cap is on, the discharge opening chamber is connected to the environment exclusively through the sterile filter.
  • the sterile filter within the meaning of the invention is a filter that is designed as a depth filter or preferably as a membrane filter and has a separation limit that is suitable for removing at least 99.9% of all bacteria from the inflowing ambient air.
  • the sterile filter preferably has a separation limit of 0.3 ⁇ m or less, particularly preferably 0.2 ⁇ m or less.
  • the sterile filter allows, in particular, the liquid dispenser with an open ventilation channel to deliver However, it can be advantageous to close the ventilation duct when delivered, for example by means of an adhesive label spanning an opening.
  • the protective cap preferably has an absorption pad which is provided on the inner part and is arranged in the discharge opening space in such a way that when the protective cap is on it rests against the discharge opening in order to absorb the liquid remaining here after a discharge.
  • the absorption pad can also be arranged at a slight distance from the discharge opening, as long as the proximity is sufficient to be able to absorb a residual drop from the discharge opening or from the surrounding discharge contour.
  • the absorption pad preferably consists of a fibrous material or a porous material. It can be rigid or elastically deformable. In particular, the material of the absorption pad can have hydrophilic properties in order to be able to absorb liquid quickly and thereby remove it from the discharge opening.
  • the sterile filter and the absorption pad are designed as two layers of the same layered composite, whereby they can be connected directly to one another or indirectly via a common attachment to the inner part.
  • This layered composite or the absorption pad or the sterile filter is attached in the inner part or possibly on the attachment part, preferably by overmoulding.
  • the fastening part, the absorption pad or the layered composite is encompassed on both sides in a one-piece manner by the holding component.
  • the overmoulding creates a particularly intimate and tight connection between the plastic of the inner part or the fastening part and an edge of the sterile filter or the absorption pad.
  • the fastening part and the inner part preferably each have a lateral surface and a front end wall.
  • the openings are preferably each provided in this end wall, since this simplifies production.
  • the openings are preferably aligned with one another, it being advantageous for the narrowest diameter or narrowest clear width of the opening in the fastening part to be a maximum of 5 mm. This prevents a sterile filter provided at the opening in the inner part from being accidentally damaged from the outside.
  • the protective cap is preferably designed as a screw cap. Accordingly, it is equipped with a thread, in particular an internal thread, which is provided on the fastening part.
  • the mating thread preferably an external thread, is provided on the outside of the housing of the liquid dispenser.
  • the fastening part is designed to enter into a clamping connection with the housing.
  • the outer diameter of the housing and a clamping area of the plug-in cap are matched to one another in order to achieve a clamping connection. Since the fastening part does not have to assume any function with regard to the sealing of the cap, the inner clamping area can be designed in particular with elongate ribs in order to enable a good clamping effect and easy removal at the same time.
  • FIGS. 1 and 2 show a liquid dispenser according to the invention and its protective cap.
  • the liquid reservoir 10 is designed as a drip dispenser. It has a liquid reservoir 12, a pumping device 20 and a discharge opening 16 which is formed by a drop formation surface 18 are surrounded.
  • the liquid dispenser 10 is used as intended in an overhead position in which the discharge opening 16 points downwards. In this position, the user presses in an actuating button 22 , by means of which liquid is conveyed through the pumping device 20 from the liquid reservoir 12 in the direction of the discharge opening 16 .
  • the discharge opening 16 is preceded by a discharge valve 24 which opens when there is sufficient pressure and allows the liquid to escape to the drop formation surface 18 .
  • a protective cap 50 is provided, which figure 2 enlarged and shown separately.
  • the protective cap 50 has two main components, namely a fastening part 60 and an inner part 80.
  • the fastening part 60 has a casing wall 60A and an end wall 60B. Am in the perspective of figure 2 An internal thread 52 is provided at the lower end of the jacket wall 60A, since the protective cap 50 is designed as a screw cap. Correspondingly, an external thread is provided on the outside of the housing 14 of the liquid dispenser 10 .
  • the protective cap 50 At said lower end of the protective cap 50 there is also an annular tamper evident portion 70 which is connected to the casing wall 60A by means of thin plastic bridges. An opening 62 passes through the end wall 60B.
  • the protective cap 50 On the inside, the protective cap 50 has a circumferential holding web with a holding edge 66 which delimits a receiving space 64 of the fastening part 60 at the bottom.
  • the already mentioned inner part 80 is arranged in this receiving space 64 .
  • This also has a casing wall 80A and an end wall 80B.
  • the inner part 80 is secured relative to the fastening part 60 by an outwardly pointing retaining web with a retaining edge 86 .
  • the receiving space 64 is dimensioned in such a way that the inner part 80 can be moved in it, namely in particular can be rotated about the longitudinal axis 2 relative to the fastening part 60 .
  • the end wall 80B like the end wall 60B, is provided with an opening 82, this opening being spanned by a layered composite of a sterile filter 56 and an absorption pad 54.
  • the plastic material of the inner part 80 is injection-molded around this layered composite in its edge region.
  • the inner part 80 can also be displaced axially relative to the fastening part 60 in the direction of the longitudinal axis 2, preferably by approximately 0.5 to 1 mm.
  • an inner side 88 of the casing wall 80A seals with a slightly tapering sealing surface 14A of the housing 14 and thus prevents gas exchange here.
  • Air can still penetrate into the receiving space 64 and into the outlet opening space 84 defined by the inner body along a ventilation path 4 through the openings 62, 82, with the air penetrating here being freed of bacteria by the sterile filter 56.
  • FIG. 3 shows an alternative design of the protective cap 50. This is designed as a plug-in cap. Correspondingly, instead of the thread 52, it has ribs whose inside surfaces form clamping surfaces 53.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
EP21174812.4A 2021-05-19 2021-05-19 Distributeur de liquide et bouchon de protection pour un distributeur de liquide Pending EP4091721A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP21174812.4A EP4091721A1 (fr) 2021-05-19 2021-05-19 Distributeur de liquide et bouchon de protection pour un distributeur de liquide
US18/559,364 US20240239569A1 (en) 2021-05-19 2022-05-05 Liquid dispenser and protective cap for a liquid dispenser
CN202280036088.5A CN117355377A (zh) 2021-05-19 2022-05-05 液体分配器和用于液体分配器的保护盖
PCT/EP2022/062112 WO2022243047A1 (fr) 2021-05-19 2022-05-05 Distributeur de liquide et capuchon de protection pour un distributeur de liquide
JP2023569689A JP2024518789A (ja) 2021-05-19 2022-05-05 液体ディスペンサー、及び液体ディスペンサーのための保護キャップ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21174812.4A EP4091721A1 (fr) 2021-05-19 2021-05-19 Distributeur de liquide et bouchon de protection pour un distributeur de liquide

Publications (1)

Publication Number Publication Date
EP4091721A1 true EP4091721A1 (fr) 2022-11-23

Family

ID=76355229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21174812.4A Pending EP4091721A1 (fr) 2021-05-19 2021-05-19 Distributeur de liquide et bouchon de protection pour un distributeur de liquide

Country Status (5)

Country Link
US (1) US20240239569A1 (fr)
EP (1) EP4091721A1 (fr)
JP (1) JP2024518789A (fr)
CN (1) CN117355377A (fr)
WO (1) WO2022243047A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248549A (en) * 1990-10-03 1992-04-15 Mitsubishi Pencil Co Liquid hair cosmetic applicator
WO2013113435A1 (fr) * 2012-02-03 2013-08-08 Obrist Closures Switzerland Gmbh Fermeture inviolable
US20150043958A1 (en) 2012-03-19 2015-02-12 Nemera La Verpillière S.A.S. Liquid Dispensing Device Equipped With A Removable Cap
FR3056197A1 (fr) * 2016-09-22 2018-03-23 Nemera La Verpilliere Capuchon amovible pour dispositif de distribution de liquide
EP3119529B1 (fr) 2014-03-20 2020-11-11 Nemera La Verpilliere Dispositif de distribution de liquide comprenant un capuchon de protection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248549A (en) * 1990-10-03 1992-04-15 Mitsubishi Pencil Co Liquid hair cosmetic applicator
WO2013113435A1 (fr) * 2012-02-03 2013-08-08 Obrist Closures Switzerland Gmbh Fermeture inviolable
US20150043958A1 (en) 2012-03-19 2015-02-12 Nemera La Verpillière S.A.S. Liquid Dispensing Device Equipped With A Removable Cap
EP3119529B1 (fr) 2014-03-20 2020-11-11 Nemera La Verpilliere Dispositif de distribution de liquide comprenant un capuchon de protection
FR3056197A1 (fr) * 2016-09-22 2018-03-23 Nemera La Verpilliere Capuchon amovible pour dispositif de distribution de liquide

Also Published As

Publication number Publication date
CN117355377A (zh) 2024-01-05
JP2024518789A (ja) 2024-05-02
US20240239569A1 (en) 2024-07-18
WO2022243047A1 (fr) 2022-11-24

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