Vial for packaging a liquid having a drip dispensing head

Abstract

The invention relates to a vial for packaging a liquid to be dispensed as a drip including a vessel having a deforming wall that can be elastically reversed by means of intake of air into the vessel, with a liquid-dispensing head mounted thereon, comprising a dropper tip projecting from the vial and an anti-bacterial filtering membrane, made to be partially hydrophilic and partially hydrophobic, which is placed across the flow of liquid and air, at the base of said dropper tip. The dispensing head comprises a hollow-body insert containing a porous pad regulating the liquid flow placed downstream from the vessel and upstream from a chamber defined downstream by said membrane.; At the base of said insert on the inside of the vial, longitudinal arches supporting a central pad arrange a star formation of passages radially guiding the air that enters the vial after having passed through the porous pad.

Description

technical field [0001] The present invention relates to the design and production of containers for packaging and for controlled dispensing (dispensing, delivery) of liquids. Especially in cases where dropwise dispensing is the aim, the main novel feature of the invention concerns the head for dispensing liquid from the reservoir of the bottle, said reservoir having elastically deformable walls, after dispensing a dose of liquid, The elastically deformable wall can be reversibly restored to its original configuration by drawing air into the bottle. [0002] The invention has a preferred but non-limiting application in the field of pharmaceutical liquid compositions, in particular in ophthalmic applications. In this field, the issues of both the purity of the dispensed product and the precision of the dispense are of utmost importance. Very similar requirements can be found, for example, in cosmetology or dermatology, in particular for the precision of the dispensing site of ...

AI Technical Summary

Problems solved by technology

[0007] While satisfactory in many situations, the use of such bottles poses specific problems for drop-by-drop operations when it comes to packaging solutions with surface active properties

In this case, to avoid relying on preservatives, single-dose packaging ampoules are preferred for them for such problems, but have disadvantages in terms of product consumption (excess content is left to waste with each use)

Especially for surface-active additives containing active ingredients which themselves have surface-active properties or used as emulsifiers (e.g. polysorbate, glycerol, glycol ricinoleate) or other excipients such as polyvinyl alcohol derivatives For ophthalmic formulations with some viscosities or lubricants of the substance or polyethylene glycol family, poor quality of droplet formation may be encountered

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