DE2355057A1 - Bottle dropper insert - has passage tapering outwards towards outlet for drop dispension of e.g. therapeutic fluids - Google Patents

Abstract

The insert fits in the bottleneck, and is particularly for the application of therapeutic substances, the contents being typically dispensed by squeezing the plastic bottle. The passage in the insert is of tapering section, widening towards the outlet. Typically, it can be formed by an internal hollow cone integral with the insert, and protruding towards the bottle interior. The cone angle can be less than 15 deg., with the ratio of length to diameter approximately 7:1. The design makes it virtually impossible to squirt a jet of fluid out of the nozzle, and it can only be dispensed in drops.

Description

Pat tentanv / äft
75 Karlsruhe, Nowackanlagei5 - j ^

Applicant Pfizer GmbH, Karlsruhe

Dropper insert for bottles

The invention relates to .ein drip insert for bottles ,, in particular for application τοη therapeutically effective Substances ^ which in the neck of the bottle © in = can be set and has a channel opening into the outlet opening, the substance being compressed by compression of the interior of the bottle preferably by shaping the elastic ones Plastic bottle is dispensed.

When using τοη therapeutically effective substances, such as eye drops, nasal drops, or the like, is the delivery of the bottle contents in the form of successive drops of the same size required. This is a flawless Dosing also allows for those substances which have a small dosage range.

The well-known drip inserts, like them, for example as one-piece molded plastic parts for elastic plastic

5Q98 19/0211

Fabric bottles are known to only deliver under certain conditions Application requirements a perfect drop shape of the "delivered" content. In many cases, especially with heavy pressure, the content is delivered by jet, which can result in significant disadvantages.

The invention is based on the object of providing a dropper insert for bottles, in particular for application τοη to create therapeutically active substances, in which the delivery of the bottle contents in perfect drop form is ensured within the normal range of use. The characteristic of the invention can be seen in that the channel is designed at least partially conical in such a way that a divergence in seal on the Outlet opening results. While in the gate known embodiments an inverted channel shape with divergence towards the interior of the bottle only under certain conditions a perfect, drop-by-drop delivery of the bottle contents is guaranteed, this is the case with the training according to the invention practically ensured in the entire area of application.

An expedient embodiment can be constructed in such a way that the channel is molded in one piece with the drip attachment, lies in the free interior protruding hollow cone. This hollow cone protrudes into the free interior of the "dropper insert.

It has been shown that the choice of the dimensions of the channel

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Must be done with special care »Favorable Results have been obtained with a canal whose total opening angle ^ was below 15 °, whereby the The ratio of the length of the channel to the diameter of the outlet opening was approximately 7s 1. It has been shown that the diameter of the hollow cone at its inside recess is particularly critical for the desired function. The exact dimensions of the hollow cone must therefore be carefully considered, taking into account the overall dimensions to be tried out.

In the drawing, an embodiment of the subject matter of the invention is shown schematically ₉ from which further inventive features emerge.

The enlarged section shows a plastic bottle I ₉ which is elastically deformable on its wall surfaces and which is connected to a drip insert 2. The dropper insert 2: is inserted into a neck 7 of the plastic bottle 1 with buckets of Flansehraäd 6 ·

The plastic bottle 1 and the dropper insert 2 consist of known, warmbildsaman plastics - in particular made of polyethylene, polypropylene, polystyrene. ^

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Claims (3)

Expectations 1. Dropper insert for bottles, especially for application of therapeutically active substances, which can be used in the neck of the bottle and has a channel opening into the outlet opening, the substance being compressed by compression of the bottle interior, is preferably given by deformation of the elastic plastic tab, characterized in that the Channel (4) is at least partially designed conically in such a way that there is a diyergence in the direction on the outlet opening results in 2 · drip insert according to claim 1, characterized in that that the channel (4) in one piece with the drip insert (2) molded, in the free interior of which is formed by a hollow cone (5) protruding into it 3. drip insert according to claim 1 and 2, characterized in that the opening angle ^{0 of} the channel is less than 15 °, the ratio of the length of the channel / diameter of the channel is approximately 7: 1. - 5 - 5 0 9 8 19/0211