Bottle for packaging liquid that is to be dispensed drop by drop, with antibacterial protection

摘要

The present invention relates to a bottle for packaging a liquid to be distributed drop by drop comprising a reservoir the walls of which can be reversibly elastically deformed by letting air into the container, surmounted by a liquid dispensing head comprising a dropper nozzle protruding from the bottle and an anti-bacterial filter membrane, that is partially hydrophilic and partially hydrophobic, interposed across the path of the liquid and the air, at the base of the said nozzle. In the dispensing head, the proposal is to create the nozzle by itself out of a material containing a bactericidal agent that has the effect of preventing any bacterial growth on the surface of the said nozzle on the outside of the antibacterial membrane. A porous core is advantageously positioned inside the duct through which liquid is expelled and air is admitted.

主权项

1. A bottle for dispensing a preservative-free liquid to be dispensed drop by drop comprising a dispensing head and a reservoir with a wall capable of elastic deformation, the deformation being reversible by letting air into said reservoir to replace any volume of liquid expelled from said reservoir through said dispensing head through which liquid is delivered under the effect of a pressure exerted against said wall,
wherein said dispensing head which is fitted in a sealed manner into said bottle, comprises a dropper tip which extends outside of said bottle and which is pierced with a central channel leading to an orifice for expulsion of liquid, said dropper tip comprising a body having a base, and a core which is inserted into said central channel, wherein said core comprises a plurality of subchannels for the expulsion of liquid and the intake of air in compensation, said subchannels being formed by grooves hollowed out on an external surface of said core, wherein a partially hydrophilic and partially hydrophobic and antibacterial filtering membrane, is mounted on the base of said dropper tip, and is interposed across a route for liquid and air, so as to allow liquid to flow in a dispensing direction from the reservoir to the dropper tip, under the effect of a pressure exerted by a user on said wall, and to allow air to flow in a reverse direction from the dropper tip to the reservoir, when said pressure is released after the dispensing of a drop of liquid, while preventing the passage of bacteria from outside of said bottle into said reservoir, wherein a microporous pad is placed in a central bore of the dispensing head, between the filtering membrane and the reservoir, and wherein said body of said dropper tip and said core of said dropper tip selectively, which are situated beyond said partially hydrophilic and partially hydrophobic antibacterial filtering membrane in the dispensing direction, are both made of a material that contains a bactericidal agent for preventing bacterial proliferation on a surface of said material.