초록 ▼

A nozzle assembly is provided for a container and dispenser which maintains a supply of liquid, such as saline solution for contact lenses, in sterile condition during storage and has a flexible wall for manually squeezed displacement of the dispensed liquid from a storage cavity within the containe

A nozzle assembly is provided for a container and dispenser which maintains a supply of liquid, such as saline solution for contact lenses, in sterile condition during storage and has a flexible wall for manually squeezed displacement of the dispensed liquid from a storage cavity within the container. The nozzle assembly includes first and second conduits for defining separate fluid flow paths between an opening from the container and a nozzle from the structure. The first conduit enables flow of the stored liquid to be discharged from the nozzle orifice during squeezing of the flexible wall. The second conduit includes a barrier obstructing flow of the liquid through the second conduit which obstruction is permeable to air and impermeable to bacteria, allowing aspiration of air through the second conduit into the liquid storage cavity to replace the dispensed liquid and re-expand the container wall while preventing entry of any bacteria with the aspirated air.

대표청구항 ▼

A liquid dispensing nozzle assembly for mounting on a liquid container and dispenser having a flexible wall and liquid storage cavity for manually squeezed dispensing of liquid from the cavity through the nozzle assembly and for maintaining the liquid, such as contact lens saline sterile condition d

A liquid dispensing nozzle assembly for mounting on a liquid container and dispenser having a flexible wall and liquid storage cavity for manually squeezed dispensing of liquid from the cavity through the nozzle assembly and for maintaining the liquid, such as contact lens saline sterile condition during storage and repeated dispensing of the liquid from the container cavity, said nozzle assembly comprising: at least first and second conduit means for providing separate fluid flow paths, said first and second conduit means including common passageway means formed in said nozzle assembly, said first conduit means enabling flow of said liquid therethrough in order to discharge said liquid from said nozzle assembly during said manual liquid dispensing; and a barrier means formed within said second conduit means providing an obstruction to flow of said liquid therethrough, said obstruction being permeable to air and impermeable to bacteria thereby enabling only aspiration of air through said second conduit into said cavity to replace liquid dispensed therefrom, and said common passageway means comprising a terminal orifice in said nozzle assembly which forms both a liquid discharge orifice from said first conduit means and an air aspiration intake orifice in said second conduit means.