EP1761439A1 - Dispositif pour distribuer des liquides sous forme de gouttes - Google Patents

Dispositif pour distribuer des liquides sous forme de gouttes

Info

Publication number
EP1761439A1
EP1761439A1 EP05750517A EP05750517A EP1761439A1 EP 1761439 A1 EP1761439 A1 EP 1761439A1 EP 05750517 A EP05750517 A EP 05750517A EP 05750517 A EP05750517 A EP 05750517A EP 1761439 A1 EP1761439 A1 EP 1761439A1
Authority
EP
European Patent Office
Prior art keywords
passage
housing half
membrane
liquid
air
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.)
Withdrawn
Application number
EP05750517A
Other languages
German (de)
English (en)
Inventor
Jan Willem Marinus Mijers
Brendan Hogan
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.)
Filtertek BV
Original Assignee
Filtertek BV
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 Filtertek BV filed Critical Filtertek BV
Publication of EP1761439A1 publication Critical patent/EP1761439A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B65D47/18—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages for discharging drops; Droppers

Definitions

  • the invention relates to a device for dispensing liquids in the form of drops, with a substantially uniform size, with a dropper tip which can be connected to a container by means of a connection and which has a passage for the liquid from the connection to an outlet opening and in which An air inlet is provided, with a liquophilic, microporous membrane located in the dropper tip in the flow path of the liquid, a pore size preventing contamination and a liquophobic, microporous membrane in the flow path of the air inlet to the container that is suitable for the passage of the liquid to prevent but let air through.
  • Such a device is known from EP 0 401 022 B1.
  • Such a device is primarily genetic medicine in the Au ⁇ used for administration of eye drops.
  • pressure is exerted by hand on the container, which is usually elastic or has at least one elastic region and contains the liquid, so that the liquid is pressed through the dropper tip due to the resulting increase in pressure.
  • the container is released, air is then sucked into the container to replace the displaced volume.
  • the liquophilic and liquophobic membrane is intended here to prevent contaminants from entering into the liquid in the process, either over the air or may be aspirated with Retired ⁇ eye fluid into it.
  • the invention has for its object to provide a device of the type mentioned, which ensures a simpler and better control and better function when dispensing the liquid and the volume compensation.
  • this object is essentially achieved in that a second passage, completely separate from the passage for the liquid, is provided in the drip tip for air access to the inlet channel connected to the container in the connection.
  • a second passage completely separate from the passage for the liquid
  • the air flow has to move counter to the liquid flow.
  • precise dimensioning of the liquid delivery is already possible by suitable dimensioning of the second passage for the air access, so that such a dropper tip is also suitable for rigid containers, in that the droplet size can be carried out directly by controlling the air supply.
  • the invention can be developed further in that in the second pass for the air access a liquophobic membrane separated from the liquophilic membrane is added. is ordered. In this way a complete separation of the flow paths from air and liquid is achieved.
  • first passage for the liquid and the second passage are connected to the inlet channel and separated from it by the liquophilic or liquophobic membrane.
  • a particularly preferred embodiment can be created in that the dropper tip consists of a first housing half and a second housing half connected to the first housing half, and in that the liquophilic and the liquophobic membranes are arranged between the two housing halves. This simplifies the manufacture of the device according to the invention in an economical manner.
  • the two housing halves are preferably produced from plastic by injection molding.
  • the first housing half contains the connection and the input channel, with the first housing half also preferably containing an air channel opening into the input channel.
  • the second housing half contains the first passage for the liquid and the second passage for the air supply.
  • the second passage is designed as a bore or slot which leads laterally out of the second housing half and opens into a chamber below the liquophobic membrane. This ensures a particularly simple control of the amount of air supplied after the outside opening for ending the droplet removal. could be closed directly with a user's finger.
  • the liquophobic membrane is connected to one of these two as an insert in the injection molding of the first or second housing half. This further simplifies production.
  • the liquophilic membrane can be clamped between the two housing halves.
  • the two housing halves are advantageously connected to one another by ultrasonic welding.
  • first housing half and the second housing halves can be connected to one another by means of an inner and an outer annular projection.
  • part of the inner ring projection of the second housing half simultaneously forms a bearing surface for the two membranes.
  • the drawing shows a greatly enlarged sectional view of the dropper tip for use in a device according to the invention.
  • the dropper tip 2 shown in the drawing only has a length of approximately 15 mm and a maximum width of approximately 10 mm.
  • the device 1 For dispensing liquids in the form of drops, the device 1 has the dropper tip 2, which is connected to a container (not shown) by means of the connection 4.
  • the dropper tip 2 contains a passage 6 for the liquid, which passes from the container to the connection 4 and from there to an outlet opening 8.
  • An air inlet is provided, by means of which the liquid dispensed from the container (not shown) is replaced by air after the dispensing has ended.
  • a liquophilic, microporous membrane 12 is arranged in the flow path of the liquid running from the connection 4 to the outlet opening 5 and has a pore size that prevents contamination.
  • a liquophobic membrane 14 also of a suitable pore size, is provided in the flow path of the air, the liquophobic membrane having the property of preventing the passage of the liquid but allowing air to pass through.
  • a second passage 16 is provided in the dropper tip 2 for the air inlet 10, which is completely separated from the first passage 6 and also leads to the inlet channel 18 connected to the container (not shown) in the connection 4.
  • the liquophobic, microporous membrane 14 lying in the flow path of the air is designed to be completely separate from the liquophilic membrane 12, so that there are absolutely separate flow paths.
  • the first passage 6 for the liquid and the second passage 16 for the return of the air in the container are both connected to the inlet channel 18. and separated from it only by the liquophilic membrane 12 or the liquophobic membrane 14.
  • the dropper tip 2 of the illustrated embodiment consists of a first housing half 20 and a second housing half 22 which is connected to the first housing half 20.
  • the liquophilic membrane 12 and the liquophobic membrane 14 are arranged between the two housing halves 20 and 22.
  • the two housing halves 20 and 22 are produced by injection molding from a suitable plastic, the first housing half 20 containing the connection 4 and the inlet duct 18 and an air duct 24 separated by a wall 23 in the inlet duct 18.
  • the second housing half 22 contains the first passage 6 with the outlet opening 8 for the liquid and the second passage 16 for the air supply, the second passage 16 being designed as a bore 26 leading laterally out of the second housing half 22.
  • the bore 26 leads into a chamber 28 below the liquophobic membrane 14.
  • a slot or the like can also be provided instead of the bore 26.
  • the liquophilic membrane 12 is clamped between the two housing halves 20 and 22 or can be inserted into the mold as an insert during injection molding of the two housing halves with the first or the second housing half 20 or 22 and connected to the housing half produced in each case.
  • the liquidophilic membrane 12 is connected to the first housing half 20 in this way.
  • the liquophobic membrane 14 can be connected as an insert to the respectively produced housing half during injection molding of the first or the second housing half 20 or 22.
  • the liquophobic membrane 14 is connected to the upper first housing half 20.
  • the two housing halves of the dropper tip 2 are preferably connected to one another by ultrasonic welding.
  • the first housing half 20 has an outer ring projection 30 and the second housing half 22 is provided with an inner ring projection 32. In this way, the two housing halves 20 and 22 can be connected to one another by intermeshing the ring projections 30 and 32 and can thus be centered well before the ultrasonic welding.
  • part of the inner annular projection 32 of the second housing half 22 forms a bearing surface 34 for the membranes 12 and 14.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

L'invention concerne un dispositif pour distribuer des liquides sous forme de gouttes, comprenant une pointe compte-gouttes qui peut être raccordée à un récipient au moyen d'un raccord. Cette pointe compte-gouttes comprend un passage pour le liquide, qui s'étend du raccord jusqu'à une ouverture de distribution, une admission d'air étant prévue. Une membrane microporeuse hydrophile présentant une grosseur de pore qui empêche le passage des impuretés est disposée dans la pointe compte-gouttes, sur la trajectoire d'écoulement du liquide. Une membrane microporeuse hydrophobe conçue pour empêcher le passage du liquide, mais permettre le passage de l'air, est disposée sur la trajectoire d'écoulement de l'admission d'air vers le récipient. La pointe compte-gouttes (2) comprend un deuxième passage (16) qui est entièrement séparé du passage (6) destiné au liquide, et qui est utilisé pour l'admission d'air vers le canal d'entrée (18) qui est raccordé au récipient et dans lequel le raccord (4) est prévu.
EP05750517A 2004-06-21 2005-06-20 Dispositif pour distribuer des liquides sous forme de gouttes Withdrawn EP1761439A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004009721U DE202004009721U1 (de) 2004-06-21 2004-06-21 Vorrichtung zur Abgabe von Flüssigkeiten in Form von Tropfen
PCT/EP2005/006642 WO2005123528A1 (fr) 2004-06-21 2005-06-20 Dispositif pour distribuer des liquides sous forme de gouttes

Publications (1)

Publication Number Publication Date
EP1761439A1 true EP1761439A1 (fr) 2007-03-14

Family

ID=32921447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05750517A Withdrawn EP1761439A1 (fr) 2004-06-21 2005-06-20 Dispositif pour distribuer des liquides sous forme de gouttes

Country Status (5)

Country Link
US (1) US20070164051A1 (fr)
EP (1) EP1761439A1 (fr)
CA (1) CA2571633A1 (fr)
DE (1) DE202004009721U1 (fr)
WO (1) WO2005123528A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2927064B1 (fr) * 2008-02-04 2010-03-26 Rexam Pharma Embout de distribution de liquide, et ensemble de conditionnement et des distribution de liquide comprenant un tel embout.
DE102008027146B4 (de) * 2008-06-02 2012-01-19 Ing. Erich Pfeiffer Gmbh Austragvorrichtung
FR2963329B1 (fr) * 2010-07-30 2013-06-28 Thea Lab Tete de distribution d'un liquide goutte a goutte
US11931749B2 (en) * 2022-08-03 2024-03-19 Gerresheimer Boleslawiec Spolka Akcyjna Dispenser for dispensing liquids

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949262A1 (de) * 1979-12-07 1981-06-11 Hans 8801 Schillingsfürst Heinlein Vorrichtung zur tropfenweisen abgabe von fluessigkeit
US5265770A (en) * 1989-06-01 1993-11-30 Pall Corporation Contamination-resistant dispensing and metering device
DE58906719D1 (de) * 1989-09-29 1994-02-24 Schleicher & Schuell Gmbh Farblich kodierter Einmalfilterhalter.
CA2043521A1 (fr) * 1990-05-31 1991-12-01 Vlado I. Matkovich Dispositif de distribution et de comptage a l'epreuve de la contamination
US5310094A (en) * 1991-11-15 1994-05-10 Jsp Partners, L.P. Preservative free sterile fluid dispensing system
FR2816600B1 (fr) * 2000-11-13 2003-03-21 Michel Faurie Dispositif distributeur de liquides goutte a goutte
US7225949B2 (en) * 2002-04-04 2007-06-05 Nipro Corporation Liquid drug container

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005123528A1 *

Also Published As

Publication number Publication date
WO2005123528A1 (fr) 2005-12-29
US20070164051A1 (en) 2007-07-19
DE202004009721U1 (de) 2004-08-26
CA2571633A1 (fr) 2005-12-29

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