DE102008030278A1 - Back suction free eye drop nozzle for e.g. bottle, has air pipe directly formed in adapter under flexible seal, which is inwardly fitted at container, where flexible seal opened to inner space is significantly lighter than orifice outlets - Google Patents

Abstract

The nozzle has a flexible seal (9) arranged or directly formed on an inner side of a valve head (1) of a valve bushing (5). The flexible seal is inserted and attached in an adapted sealing sleeve (10) and/or in a conical and/or convex sealing cone at an adapter (6) under a light initial load. An air pipe (11) is directly formed in the adapter under the flexible seal, which is inwardly fitted at a container (21) with low pressure. The flexible seal opened to an inner space (2) is significantly lighter than orifice outlets (13, 22, 23). An independent claim is also included for a method for producing a back suction free eye drop nozzle.

Description

The The invention relates to a non-oozing eye drop nozzle for vials and tubes for the introduction of eye drops in eyes, of other liquid medicine on the skin, in ears, in the mouths of humans or animals, over the with highest safety no contaminated liquid can be sucked back into the bottle or tube back.

In common, simple nozzles, after squeezing the bottle and releasing, it may be possible to suck back contaminated liquid. Can be prevented so far only by very complex solutions as in the EP 1 466 668 B1 described for the pump more than 10 items and two metal springs are needed. This dispenser donates exactly one drop, but is always too expensive with sinking budgets of health insurance companies.

Also a proposal in the EP 070 586 B1 does not completely prevent back sucking. To move the outlet nozzle far forward and to use a spring-loaded cone valve does not bring the desired effect.

In the EP 1 228 975 B1 a slit valve is proposed at the outlet nozzle, which alone can not prevent a Rücksaugeffekt for ventilation of the bottle, the valve segments spring for ventilation to the inside.

The invention EP 1 036 013 B1 from France proposes a microbial filter directly in the stream of eye fluid. In fact, one sucks contaminated liquid from the outlet to the filter back on, which at least the outer part of the nozzle is loaded with germs.

aim this invention is to find a solution that it allows a back suction of contaminated To prevent liquids completely and thereby the effort only slightly increase or no pumps or To use metal springs.

The Asked task is according to the main claim and its Ancillary claims solved.

To is in the interior of a soft-elastic valve head with a opening towards the outside easier than opening towards the interior Outlet nozzle a thicker and / or harder clamping sleeve Injected in the first step of a 2K process or mounted in it.

Within This clamping sleeve is an axial channel. He will usually at any point with a very fine, capillary Narrowed. It can also be star-shaped his and only a few hundredths of a millimeter to be tight. reason for This narrowing of the channel is that the liquid to the Building a single drop in a defined time of pressing the bottle should go in the direction of the outlet opening and never abruptly, for which such valves usually tend. The under Pressure fluid gradually fills the soft elastic outlet or it opens through this reducing valve quasi in slow motion and the drop forms in a few seconds.

At directed to the interior of the container inside the Valve sleeve of the valve head forms a likewise soft elastic Cuff, in a matching sealing sleeve on Adapter is inserted under light bias and strikes there. Immediately below this cuff is at least one air hole formed in the adapter, which opens only to the interior Connects to the outside air.

there the valve seat in the adapter is similarly shaped, conical and / or slightly crowned and with polished surface quality.

• 1) Das Eine-Richtungs-Ventil für Flüssigkeit an der Austrittsdüse und
• 2) Das Gegenrichtungs-Ventil für die Belüftung im Bereich des Adapters sind räumlich signifikant voneinander getrennt, letztere wird deutlich um einige Millimeter zum Behälter hin verlegt.

There are now two main techniques that run like a thread through the present invention:

• 1) The one-way valve for liquid at the outlet nozzle and
• 2) The counter-direction valve for ventilation in the area of the adapter is spatially significantly separated from each other, the latter being moved significantly a few millimeters towards the container.

First, the one-way valve will be described: In an increase in the wall thickness of the tip of a preferably convex and / or conical, soft-elastic valve head either axial slots or a central puncture are punched or formed. Also, an outwardly curved, inner valve cover is provided. Before that, there may still be a larger, outer discharge nozzle, in the interspace of which there is a fine-pored membrane for the liquid or for certain components thereof. The two openings should be asymmetrical to each other to avoid ejection from the outlet nozzle. The space between the valve cover and the outer outlet nozzle is forcibly demolded, since it is soft elastic materials with an elongation at break of 200 to 300%. In order to reduce the gaps between the inner outlet nozzle and the outer, so that no germs accumulate there, it is provided to arrange both openings directly behind one another or the microporous output-side membrane just described insert.

The convex shape of the valve head acts as a vault the outer Outlet nozzle, whose slotted in one version segments or the curvature of the valve cover prevent everting inside while the container after donating forms a negative pressure. That would normally for Collapse the small 5 to 20 ml PE vial.

Around To prevent this is a spatially separate, about 5 to 10 mm placed in the direction of the container ventilation arrangement been created. And ventilated it only in the direction of Interior and never outside, otherwise it will leak could come from liquid at this point when putting pressure on the container. That will achieved by looking at the upper end of the valve head from a TPE, TPV, silicone or similar soft elastic material forms a cuff, the form-fitting with some oversize in the inside of the adapter and / or in a cylindrical valve sleeve is applied. The seal is improved by an even thinner Cuff ring, which conforms to a sealing cylinder. The higher now the internal pressure when squeezing the bottle, the more tight nestles the cuff on and seals off. At negative pressure in the bottle the cuff springs inwards and gives an arbitrarily shaped one Air hole free, over the replacement air in the interior of the Can flow container. The cuff opens towards the interior significantly lighter than the narrowest of the outlet nozzles or the slots.

The Issue of eye drops now takes place at the top of the valve head, where the risk of contamination by accidental contact of the eye, eyeball or ear is given or unavoidable. The ventilation of the container takes place a few millimeters above the air hole and the cuff to the interior out.

A additional security against touching the Valve opening with contaminated liquid is given when facing a larger exit nozzle the tip at a distance of a few millimeters a thin Valve hood forms, which arched slightly outwards and pierced. It should be asymmetrical to the outer Outlet opening are pierced, so at careless high pressure on the bottle a fine liquid jet Do not get into the eye directly from the outlet nozzle can. He would always so on the inner wall of this gap meet and then drip out.

One Channel in the clamping sleeve made of a plastic such as PE or PP should be anywhere on at least one, very fine capillary breakthrough be narrowed. From these narrowed breakthroughs off in the direction of the interior per breakthrough one opposite the larger entrance channel significantly narrower Flow channel are formed. That can be short Be tubes or star-shaped lamellae. Advantageous are several fine capillary breakthroughs that are concentric and formed at a distance from the major axis. you will be in this case like a valve from an elastic locking surface shut off at a radial distance from its central outlet opening is formed at the top of the soft-elastic valve head.

From the inside is in the channel a Reduzierdüse with a very narrow capillary opening mounted.

The Piercing the valve cover as well as a thicker wall, outwardly arched top of the soft-elastic Valve head can already be done in the injection mold. It hits a sharpened stylus in the freely drawn counter contour into it. The puncture is practical an automatically self-closing, Valve-like opening. By the hand warmth at the Bottle and / or by very slight pressure on the bottle forms already a drop at the top.

The Ventilation always takes place via the air holes, which then proportionally open more easily inwards. To provide 100% security against the intrusion of for example smeared germs or droplets in the air outlet The following is suggested: Between the cuff and the air hole or in front of the air hole becomes a water-impermeable and air-permeable membrane attached. This is usually made of a microporous PTFE or PE, is under the name Goretex or Porex became known and can, for example, in one additional sleeve embedded and in front of the air hole to be assembled. It is also provided an activated carbon or other to use porous synthetic resins, films or pulp. A Treatment of these membranes with a germ reducing agent is makes sense, it should only be active in exceptional cases.

The Membrane sleeve for receiving and fixing the membrane, even has an outer air hole, the opposite the inner air hole is twisted. About a circulating Labyrinth channel flows the replacement air deflected into the inner air hole. This labyrinth channel is preferably for increasing the effective filter thickness also with the material of the membrane filled. This practically means that the conical or cylindrical membrane at the location of the labyrinth channel Wearing ring bulge. The membrane sits under the clamping sleeve airtight, for example, in a press fit or US-welded.

In order to is mistakenly wiped into the outer air hole Fluid prevented from getting directly to the membrane.

Since the diameters of the bacteria are in the range of the average diameter of modern Goretex membranes, the path for the microbes should be made as long as possible. In the construction proposed here, only a millimeter filter thickness would be possible. However, about 3 to 4 mm are required. The filter path has been tripled to about 13 mm using the following new technology:
Below the outer air hole of a conical membrane sleeve an at least partially encircling labyrinth channel is formed, wherein the outer air hole is rotated relative to the inner air hole by 90 to 180 °. At the same time the labyrinth channel is filled with a circumferential annular bead of the material of the membrane. This means that the air enters at one point of the conical membrane sleeve and then about 90 to 180 °, so about 13 mm far annularly through the few microns fine pores of the membrane must flow until the air then through the inner air hole to the elastic sleeve zoom comes. As already described, this spring temporarily cushions in under negative pressure in the bottle.

The Membrane can also be used in the 2K process directly into the membrane sleeve and / or molded on the adapter.

Other versions are the following examples and the 1 to 22 refer to.

there demonstrate:

1 to 3 - A non-sucking eye dropper for vials with a puncture in the soft-elastic valve head,

4 to 6 - A non-sucking eye dropper nozzle for vials with four slots in the soft-elastic valve head,

7 to 9 - A non-sucking eye dropper for vials with a puncture in a thin valve cover in the soft-elastic valve head,

10 to 12 - A non-sucking eye dropper for vials with a puncture in a thin valve cover in the soft-elastic valve head and a GORETEX membrane in front of the air hole.

13 to 16 - A non-aspirating eye dropper for vials with a puncture in a thin valve cover in the soft-elastic valve head and a semipermeable membrane in front of the air hole with labyrinth channel.

17 to 20 - A non-aspirating eye dropper nozzle for vials with a central opening in a thin valve cover in the soft-elastic valve head and four asymmetric openings in the front part of the clamping sleeve,

21 and 22 - The parts of the eye drop nozzle in an exploded view.

The 1 to 3 show views and a section through a non-oozing eye dropper nozzle for a 10 ml vial 21 with a puncture 13 in the convexly arched top 1' from a soft-elastic valve head 1 which consists of a TPV. In longitudinal section based 3 is the best way to explain the new technology:
In the interior 2 of the soft-elastic valve head 1 with one to the outside 8th towards lighter than the interior 2 opening outlet nozzle 4 . 4 ' is a thicker and / or harder ferrule 3 mounted in it.

To the inside 15 the valve sleeve 5 of the valve head 1 is also a soft elastic cuff 9 with a thinner cuff ring 29 molded, in a matching sealing sleeve 10 on the adapter 6 is used under light bias and strikes there.

Immediately under this cuff 9 are two coaxial air holes 11 in the adapter 6 molded, the only one to the interior 2 opening to the outside air. The cuff 9 has at its outer end a mere 0.3 mm thin collar ring 29 , by the increased internal pressure and by the elasticity absolutely tightly in the sealing sleeve 10 is pressed. The 0.5 mm narrow channel 23 in the clamping sleeve 3 is made of some star-shaped, very fine capillary breakthroughs 33 in its outer wall 27 limited. The gap 26 between the outlet nozzle 4 and the breakthroughs 33 Thanks to the fine breakthroughs 33 slowly fills, creates an additional, non-capillary distance to the interior.

In the 4 to 6 are the views and a section through a non-sucking eye dropper for vials 21 with four axial slots 12 in the top 1' a soft-elastic valve head 1 represented from a TPV. Here is the valve head 1' like a built-up against the outside vault built, no everting the interior 2 hints. This one-way valve 1' is before pressing the clamping sleeve 3 slotted. The latter is necessary firstly to the valve head 1 a secure hold in the adapter 6 and second, the valve cover 24 firmly ge nug to the inside of the sealing cone 10 ' to press. The 0.5 mm narrow channel 23 in the clamping sleeve 3 becomes inside here 18 out from a reducing nozzle 22 in the form of star-shaped, 0.05 mm fine capillary breakthroughs 33 limited. As a result, a drop at the outlet opening builds up delayed in time within a few seconds.

This version is suitable for a 2K injection molding process, where first the clamping sleeve 3 with their capillary breakthroughs 33 made from a HD-PE or PP. In the second step, the valve head 1 from the pharmacologically harmless TPE Kraiburg around the clamping sleeve 3 sprayed around and then slotted. In the version after 1 to 3 can already in the injection molding machine of the puncture 13 with a sharpened stylus in the tip 1' be brought in by driving the counter-pin back a bit.

In the 7 to 9 are the views and a section through a non-sucking eye dropper for vials 21 with a thin-walled inner valve cover 24 shown asymmetrically to the outer outlet opening 4 a puncture 13 has. The inner valve cover 24 is arched outwards so as not to be able to ventilate inwards. In addition, the conical front part supports 27 the clamping sleeve 3 the valve cover 24 which enhances this effect.

In the top 1' of the soft-elastic valve head 1 from a TPV here is a 0.8 mm hole 4 asymmetrical to the main axis 37 introduced, which serves as protection against coarse contamination.

As a clamping piece 3 ' Here is a fine-pored part of a sintered PTFE used. This is next to the spatial separation of the outlet opening 4 and air intake 11 Added safety to this system by preventing bacteria from getting into the interior with the microporous clamp 2 to get.

Noteworthy also the dual function of the clamping piece 3 ' :
a) it retains germs and b) it clamps the soft, elastic sleeve of the valve head 1 in the opening 45 of the adapter 6 firmly.

In the 10 to 12 is a non-oozing eye dropper for 10 ml PE vials 21 with a puncture 13 in a thin, inner valve cover 24 in the soft-elastic valve head 1 and with a Goretex membrane 34 in front of the air hole 11 shown. The Goretex membrane 34 is impregnated with a germ reducing agent and in a membrane sleeve 35 made of PP attached to the outer contour of the adapter 6 was pressed. This provides 100% security against accidental ingress of contaminated liquids or droplets into the vent hole 11 produced, which can be essential in particularly contagious diseases.

In the 13 to 15 is a non-oozing eye dropper for 10 ml PE vials 21 with one opposite the main axis 37 asymmetrical roulette 13 in a thin outer valve cover 1' in the soft-elastic valve head and with a Goretex membrane 34 in front of the air hole 11 shown. The attachment of the fine channels 23 directly under the slotted segments 47 ensures that the eye fluid can not be sprayed directly into the eyes from the inside and additionally a double sealing of the channels 23 he follows. The Goretex membrane 34 in the form of a conical sleeve is impregnated with a germ reducing agent and in a membrane sleeve 35 made of PP, which itself has an outer air hole 11 ' owns that opposite the inner air hole 11 rotated by 90 °. Over a circulating labyrinth channel 36 the replacement air for the amount of liquid dispensed flows through 90 ° into the inner air hole 11 ,

This accidentally prevents liquid wiped into the outer air hole, directly to the membrane 34 to get.

The membrane sleeve 35 was on the outer contour of the adapter 6 snapped and pressed air-tight. This provides 100% security against accidental ingress of contaminated air or fine droplets into the air duct 11 produced, which can be essential in particularly contagious diseases. Mainly it can be used by preservatives free eye drops, which are much better tolerated.

The 17 to 20 show a non-sucking eye dropper for vials 21 with a central puncture 13 in a thin, outer valve cover 1' in the soft-elastic valve head 1 ,

In the front part 27 the clamping sleeve 3 are made of HD-PE and four around the main axis 37 concentric breakthroughs 33 formed. From these narrowed breakthroughs 33 is out in the direction of the interior 2 per breakthrough 33 one opposite the larger inlet channel 23 each significantly narrower flow channel 43 been formed.

These are four short tubes whose flow resistance helps prevent the liquid from leaking abruptly from the capillary channels 33 can escape. The four fine, capillary breakthroughs 33 that are concentric and at a distance U from the major axis 37 are formed in this case, valve-like by an elastic barrier area 38 shut off in the radial distance U from its central outlet opening 4 at the top 1' of the soft-elastic valve head 1 is formed.

To further increase the flow resistance and at the same time to achieve a filtering effect against bacteria, other pathogens and substances is provided, from the inside 2 here in the canal 23 a fine-pored clamping piece 3 ' use.

It has a double function: First, you fix the constriction 42 in the exit 45 of the adapter 6 axially and at the same time seals it to the outside and additionally achieves a filtering effect for the liquid.

21 shows an exploded view of a single membrane 34 Made of Goretex with 3 microns average pore size and circumferential annular bead 41 , To the left is the adapter 6 with the exit 45 , in the constriction 42 of the valve head 1 should snap into place. The air entry into this system takes place via the outer air duct 11 ' the membrane sleeve 35 instead of that made of PP or HDPE.

The circumferential ring bulge 41 on the membrane 34 fills the circulating labyrinth channel 36 in the inside of the conical membrane sleeve 35 tight. This forces the invading replacement air to form an arcuate path within the membrane 34 of more than 12 mm, whereby maximum filtering is possible. Optimal here is performed direct molding of the membrane in this membrane sleeve.

In the 22 right is the valve head 1 made of a silicone with its four mechanically stamped slots 12 and the constriction 42 shown separately. At the constriction 42 are a conical cuff 9 and formed thereon a cylindrical sleeve ring whose surfaces must be very flat. Shown to the left is the clamping sleeve 3 whose shoulder 46 the elasticity of the inner ventilation valve, ie the cuff 9 influenced. The liquid first flows into the fine-pored, output-side membrane 44 , then into the channels 43 and due to an increased internal pressure from the slots opened thereby 12 out.

1

valve head

1'

top

2

inner space

3

collet

3 '

fine-pored Clamp,

4

Outer exhaust nozzle

4 '

Inner exhaust nozzle

5

valve sleeve

6

adapter

7

reinforcement

8th

outside

9

cuff

10

sealing sleeve on the adapter

10 '

sealing cone

11

air pocket

11 '

outer Air hole, air inlet

12

Slot, outlet opening

13

Breakthrough, Puncture, outlet

14

The End the cuff

15

inside the valve sleeve

16

cylindrical Area

17

lower opening of the adapter

18

inside

19

star

20

commitment

21

Container, Bottle, tube

22

constriction Reduction nozzle, outlet inside

23

channel

24

valve cover

25

tube shoulder

26

gap

27

Front part, outer Wall in the canal

29

cuff ring

33

capillary Breakthroughs, outlet inside

34

Membrane, impermeable to water, permeable to vapor, e.g. GORETEX, POREX, activated carbon, microfilter, pulp, soaked

35

membrane sheath

36

Labyrinth Channel

37

main axis

38

blocking surface

39

Reduction nozzle, separately

40

Capillary opening

41

torus

42

constriction on the valve head

43

flow channel

44

fine-pored, output side membrane

45

output of the adapter

46

shoulder on the clamping sleeve

47

segment a slit valve

X

distance

U

radial distance

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• EP 1466668 B1 [0002]
• - EP 070586 B1 [0003]
• - EP 1228975 B1 [0004]
• - EP 1036013 B1 [0005]

Claims (30)

Retractable eyedropper nozzle for vials and tubes for introducing eye drops into eyes, other liquid medicine on the skin, in ears, in the mouth of humans or animals, over which no contaminated liquid can be sucked back into the bottle or tube with the utmost security characterized in that: - (in the interior 2 ) of a soft-elastic valve head ( 1 ) with one to the outside ( 8th ) lighter than the interior ( 2 ) opening, molded thereon outlet nozzle ( 4 . 4 ' ) with the slotted or point-shaped outlet openings ( 12 respectively. 13 ) either a harder, nonporous clamping sleeve ( 3 ) with a channel ( 23 ) and / or a compact, fine-pored clamping piece ( 3 ' ) is molded or mounted therein, - that on the inside ( 15 ) of the valve sleeve ( 5 ) of the valve head ( 1 ) also a soft elastic cuff ( 9 ) is arranged or directly molded, which in a matching sealing sleeve ( 10 ) or in a conical and / or curved sealing cone ( 10 ' ) on the adapter ( 6 ) is inserted under light bias and strikes there, being immediately under the cuff ( 9 ) at least one air hole ( 11 ) in the adapter ( 6 ) is formed from which at negative pressure in the container ( 21 ) the cuff ( 9 ) is deflected inward and then one only to the interior ( 2 ) opening to the outside air, - that the cuff ( 9 ) to the interior ( 2 ) opens significantly more easily than the narrowest of the outlet openings ( 12 . 13 . 22 . 23 ). A non-oozing eye drop nozzle according to claim 1, characterized in that between the cuff ( 9 ) and the air hole ( 11 ) or outside just before the air hole ( 11 ) spatially a few millimeters from the outlet openings ( 4 . 12 . 13 ) separated a fine-pored, air-permeable membrane ( 34 ) is attached. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that between the cuff ( 9 ) and the air hole ( 11 ) or outside just before the air hole ( 11 ) an air-permeable, fine-pored membrane ( 34 ) is attached. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that between the cuff ( 9 ) and the air hole ( 11 ) or in front of the air hole ( 11 ) a water-impermeable and air-permeable microporous membrane ( 34 ) with a special membrane sleeve ( 35 ) made of plastic at the ends of which is attached airtight. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that between the cuff ( 9 ) and the air hole ( 11 ) or in front of the air hole ( 11 ) a water-impermeable, air-permeable, germ-reducing membrane ( 34 ) is attached. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that the membrane ( 34 ) is made of a fine-pored PTFE, PE or synthetic resin. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that the membrane ( 34 ) is substantially impermeable to hyaluronic acid. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that the membrane ( 34 ) is made of a pulp impregnated with a germ reducing substance. A non-oozing eye drop nozzle according to one of the preceding claims, characterized in that in the valve head ( 1 ) between the exit opening ( 12 or 13 ) and the interior ( 2 ) a fine-pored, exit-side membrane ( 44 ) is arranged. A non-oozing eye drop nozzle according to claim 1, characterized in that a channel ( 23 ) in the clamping sleeve ( 3 ) at any point of at least one very fine capillary breakthrough ( 33 ) is narrowed. A non-oozing eye drop nozzle according to claims 1 and 9, characterized in that the outer wall ( 3 ' ) in the channel ( 23 ) in the clamping sleeve ( 3 ) of some fine breakthroughs ( 33 ), which is concentric with the main axis ( 37 ) and at a radial distance (U) from a central outlet opening (FIG. 4 ) are arranged. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that a channel ( 23 ) in the clamping sleeve ( 3 ) at any point of at least one very fine capillary breakthrough ( 33 ) is narrowed, from which in the direction of the interior ( 2 ) per breakthrough ( 33 ) one opposite the channel ( 23 ) significantly narrower flow channel ( 43 ) is formed. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that the outer wall ( 27 ) in the channel ( 23 ) in the clamping sleeve ( 3 ) of some fine breakthroughs ( 33 ), the valve-like from an elastic locking surface ( 38 ) which are concentric with the main axis ( 37 ) and at a radial distance (U) from a central outlet opening ( 4 ) at the top ( 1 ) of the valve head ( 1 ) is formed. A non-oozing eye drop nozzle according to one of the preceding claims, characterized in that from the inside ( 2 ) ago in the channel ( 23 ) a reducing nozzle ( 39 ) with a very narrow, capillary opening ( 40 ) is mounted. A non-oozing eye drop nozzle according to claim 1, characterized in that in a reinforcement ( 7 ) the wall thickness of the tip ( 1' ) of a soft-elastic valve head ( 1 ) either axial slots ( 12 ) or a breakthrough or a puncture ( 13 ) are punched or molded. Process for producing a non-oozing eye drop nozzle according to claim 1 and 12, characterized in that in the tip ( 1' ) of the valve head ( 1 ) still within the injection mold of a movable, pointed molding pin a puncture ( 13 ) is pushed. A non-oozing eye drop nozzle according to claim 1, characterized in that within the tip ( 1' ) of the valve head ( 1 ) an inner valve cover ( 24 ) with a puncture ( 13 ) at a distance (X) from its open, outer outlet nozzle ( 4 ) is arranged. A non-oozing eye drop nozzle according to claim 1, characterized in that within the tip ( 1' ) of the valve head ( 1 ) one to the outside ( 8th ) curved valve cover ( 24 ) with a puncture ( 13 ) at a distance (X) from its open, outer outlet nozzle ( 4 ) is arranged. A non-oozing eye drop nozzle according to claims 1 and 17, characterized in that in the intermediate space ( 26 ) between the inner valve cover ( 24 ) and outer valve cover ( 1' ) an output-side fine-pored membrane ( 44 ) is arranged. A method for producing a non-oozing eye drop nozzle according to claim 1 and 14 to 15, characterized in that the intermediate space ( 26 ) between the inner valve cover ( 24 ) and the outer outlet nozzle ( 4 ) is forcibly removed from the mold. A non-oozing eye drop nozzle according to claims 1 and 14, characterized in that within the tip ( 1' ) of the valve head ( 1 ) a thin-walled valve cover ( 24 ) with a puncture ( 13 ) at a distance (X) from its open, outer outlet nozzle ( 4 ), the puncture ( 13 ) and the outlet nozzle ( 4 ) are asymmetrically offset from each other. A process for producing a non-oozing eye drop nozzle according to claim 1, 14 and 15, characterized in that in a thin-walled valve cover ( 24 ), which are within the top ( 1' ) of the valve head ( 1 ) at the distance (X) from the outer outlet ( 4 ) is arranged, even within the injection mold of a movable, sharp molding pin a puncture ( 13 ) is pushed. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that a channel ( 23 ) in the clamping sleeve ( 3 ) at any point with some very fine, star-shaped openings ( 33 ) is narrowed. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that the upper end ( 14 ) of the cuff ( 9 ) in the form of a collar ring ( 29 ) in a cylindrical area ( 10 . 16 ) of the adapter ( 6 ) sealingly. Method for producing a non-sucking eye drop nozzle according to claim 1 and 2, characterized in that in one version the valve sleeve ( 5 ) of the valve head ( 1 ) on a star ( 19 ) of an insert ( 20 ) and then from the inside ( 18 ) into the adapter ( 6 ) is pushed and fixed. A non-oozing eye drop nozzle according to one of the preceding claims, characterized in that the valve head ( 1 ) for eye drops with its valve sleeve ( 5 ) and its cuff ( 9 ) is made of a pharmacologically acceptable TPE, TPV, EVE, rubber or silicone. A non-oozing eye drop nozzle according to one of the preceding claims, characterized in that a cuff ( 9 ) within the valve head ( 1 ) of a similarly shaped front part ( 27 ) on the clamping sleeve ( 3 ) is supported, so that an everthing to the interior ( 2 ) is excluded. A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that below the outer air hole ( 11 ' ) of the membrane sleeve ( 35 ) an at least partially encircling labyrinth channel ( 36 ) is formed, wherein the outer air hole ( 11 ' ) opposite the inner air hole ( 11 ) is twisted A non-oozing eye drop nozzle according to any one of the preceding claims, characterized in that below the outer air hole ( 11 ' ) of the membrane sleeve ( 35 ) an at least partially encircling labyrinth channel ( 36 ) is formed, wherein the outer air hole ( 11 ' ) opposite the inner air hole ( 11 ) and being the labyrinthka nal ( 36 ) with a circumferential annular bead ( 41 ) on the outer jacket of the membrane ( 34 ) is filled out. A non-sucking eye drop nozzle according to one of the preceding claims, characterized in that the approximately identical valve head ( 1 ) without air hole ( 11 ) together with an adapter ( 6 ) or directly into a tube shoulder ( 25 ) is mounted.