Bottle for preserving substances in a separated condition and to be mixed together before dispensing

Abstract: The purpose of the bottle is to enable substances to be separatedly preserved and the mixture of said substances to be subsequently dispensed dropwise only under the control of the operator. The bottle (1) comprises a container (2) and a closure element (3) applicable to its mouth (5). The closure element (3) comprises a pump (7) provided with a dispensing orifice (26) and accessible to the user's fingers through at least one opening (13) in the cap (6). A separator element (8) is housed in the interior of said pump (7), and is removable for squeezing the pump.

Description: This invention relates to a bottle for separatedly preserving substances and subsequently dispensing them dropwise. Bottles of this type are known for example from Italian industrial invention patent No. 1,073,125 dated 27 October 1976. The mixture is dispensed by inverting the bottle to utilize the force of gravity, which consequently results in the formation of droplets at the dispensing orifice. Although these bottles correctly preserve the substances, their dispensing is not satisfactory if said substances have to be dispensed with precision both in terms of quantities and in terms of the accuracy of the point on which the dispensed droplet falls. These specific requirements are felt for example in the ophthalmic field, in which accurate dispensing is necessary in terms both of quantity and positional accuracy of the collyrium droplets together with the need for ensuring optimum preservation of the medicament, even if this is formed from components which when mixed together give rise to a mixture of poor chemical stability and hence of limited preservation. DE 31 40 398 A discloses a bottle for keeping substances of a mixture separate until use according to the preamble of claim 1. The object of the present invention is therefore to provide a bottle of the aforesaid type which is of satisfactory use when accurate dispensing is necessary in terms both of quantity and position of the droplets of a mixture of substances preserved in separated relationship until just prior to dispensing. This object is attained by a bottle in accordance with the first claim, to which reference should be made for brevity. As the mixture substances can be separatedly preserved, the mixture preservability is increased and dispensing can be accurate in terms both of quantity and position, as this takes place only under the control of the operator. The invention is illustrated by way of non-limiting example in the figures of the accompanying drawings, which relate in particular to a bottle for ophthalmic use and hence intended to contain a medicament (collyrium) for instilling into the eyes. Figure 1 is a perspective view of the bottle. Figure 2 is a section on the line II-II of Figure 1. Figure 3 is a section on the line III-III of Figure 1, one part however being shown deformed by the effect of the action of a hypothetical user, necessary for forming the mixture of the contained substances. Figure 4 is a view in the direction of the arrow IV of Figure 3. With reference to the said figures, the illustrated bottle, indicated overall by 1, comprises a container 2 and a closure element 3. The container 2 comprises a body 4 and a mouth 5. The closure element 3 comprises a cap 6, a pump 7 and a separator element 8. The cap 6 comprises a fastening seal 9 and a sealing element 10 which hermetically seals a nozzle 14. The fastening seal is connected to the sealing element 10 by predetermined fracture strips 12, the purpose of which is to indicate the removal of the sealing element 10 and hence the fact that the bottle 1 has been opened. The sealing element 10 is provided with at least one opening 13, two opposing openings being provided in the example. The function of said opening will be apparent hereinafter. The pump 7 comprises a base portion 15, a flange 16, a deformable portion 17 and the nozzle 14. The base portion can be forcibly inserted into the mouth 5 of the container 2 such that the flange 16 abuts against the front surface 18 of the mouth 5. The fastening seal 9 seals the pump 7 to the mouth 5 of the container 2. The sealing element 10 and the guarantee seal 9 initially form a one-piece element located on the container 2 and relative pump 7. The one-piece element 9-10 engages with adequate interference the nozzle 14, an upper and lower annular lateral surface 20 and 21 respectively of the flange 16, and the lateral surface 19 of the mouth 5. The separator element 8 is positioned within the pump 7 and fits tightly into the base portion 15 so as to provide a hermetic seal separating the inner space 22 of the deformable portion 17 from that 23 of the body 4. The separator element 8 is of substantially cylindrical form with its upper end 25 tapered, and carries longitudinal rectilinear grooves 24 in its outer surface. The tapered upper end, the cylindrical form and the grooves 24 facilitate the expulsion of the separator element 8 from the pump 7 when this is squeezed by the user's fingers. The grooves 24 also perform the function of facilitating gravity fall of the substance, preferably a powder, contained in the space 22, the substance contained in the space 23 usually being a liquid acting as a solvent for said powder. However there is nothing to prevent them being two liquids. The function of the openings 13 is to enable the deformable portion 17 to be squeezed by acting through the sealing element 10, which can be removed by the user only after the powder-solvent mixture has been obtained. The same applies to a mixture of two liquids. In this manner the bottle can be shaken to facilitate mixture formation with the bottle still sealed, and hence obtain a solution ready for use still within the sealed container. Thus the solution obtained in the bottle remains isolated from the external environment, with all the resultant advantages. By fracturing the strips 12 the sealing element 10 can be removed, hence opening the orifice 26 of the nozzle 14. The dimensions of the orifice 26 are such as to enable the obtained mixture to be dispensed only by squeezing the deformable portion 17 and hence only under the control of the user. Consequently the user can invert the bottle and position it vertically above the point at which administration is required (for example the eye), without danger of premature flow of the mixture.

Claims: A bottle for separately preserving substances, mixing them and subsequently dispensing them dropwise, comprising a container (2) and a closure element (3) applicable to a mouth (5) of said container (2), said closure element (3) comprising a pump (7) comprising a deformable portion (17) and a dispensing orifice (26), a separator element (8) being housed in the interior of the pump (7) and separating an inner space of the deformable portion (17) from the inner space of the container (2), said separator element (8) being removable be squeezing the pump, whereby the substance stored in the space of the deformable portion (17) can be mixed with the substance stored in the inner space of the container (2), said closure element (3) further comprising a outer cap (6) in which said pump (7) is being housed, characterised in that the cap (6) is provided with at least one opening (13), through which the deformable portion (17) of the pump (7) can be squeezed in order to remove the separator element (8) from the pump (7). A bottle as claimed in claim 1, characterised in that the separator element (8) is of substantially cylindrical form with ist upper end (25) tapered. A bottle as claimed in claim 1, characterised in that the separator element (8) carries rectilinear longitudinal grooves (24) in its outer surface. A bottle as claimed in claim 1, characterised in that the pump (7) comprises a base (15), a flange (16) and a deformable portion (17) provided with a nozzle (14), the orifice (26) of which has such dimensions as not to enable the mixture contained in the bottle to spontaneously emerge. A bottle as claimed in claim 4, characterised in that the pump (7) is secured to the mouth (5) of the container (2) by a fastening seal (9) which locks the flange (16) to the mouth (5).

Inventors: NOBBIO ALESSIO, NOBBIO, ALESSIO
Applicants: INGE SPA, INGE S.P.A.
Application year: 1997
Main classification: B65D51
IPC codes: B65D47, B65D51