초록 ▼

A liquid dispensing nozzle assembly is provided for mounting on a liquid container and dispenser having a flexible wall and liquid storage cavity for manually squeezed dispensing of a liquid from the cavity through the nozzle assembly. The nozzle assembly maintains the liquid, such as contact lens s

A liquid dispensing nozzle assembly is provided for mounting on a liquid container and dispenser having a flexible wall and liquid storage cavity for manually squeezed dispensing of a liquid from the cavity through the nozzle assembly. The nozzle assembly maintains the liquid, such as contact lens saline solution, in sterile condition during storage and repeated dispensing of the liquid from the container cavity. The nozzle assembly includes a liquid conduit for communication from the container cavity to a liquid discharge port from the nozzle assembly to enable dispensing of the liquid displaced by manually squeezing the flexible wall of the container. The nozzle assembly also includes an air aspiration conduit separate from the liquid conduit for aspirating air into the container cavity to replace the dispensed liquid. The nozzle assembly includes a partitioned diaphragm including separate portions respectively included in the liquid conduit and the air aspiration conduit. The air conduit portion of the diaphragm can include a filter which is hydrophobic and air permeable but impermeable to bacteria to prevent entrainment of bacteria with the aspirating flow of air into the liquid storage cavity of the container.

대표청구항 ▼

An elastomeric diaphragm structure for controlling liquid flow from a storage container or the like, integrally comprising; a resiliently deflectable valve element for biased sealing against a valve seat to form a one-way valve therewith and allowing only one-way flow of liquid therebetween when sai

An elastomeric diaphragm structure for controlling liquid flow from a storage container or the like, integrally comprising; a resiliently deflectable valve element for biased sealing against a valve seat to form a one-way valve therewith and allowing only one-way flow of liquid therebetween when said valve element is resiliently unseated from the valve seat to open said valve; and an air filter portion integrally formed with said valve element, for filtering air aspiration into said storage container.