Fluid dispenser for germ-free fluid
AssigneeUrsapharm Arzneimittel GmbH
InventorGunter Geimer
Life of this patent
Estimating the term…
Abstract
A fluid dispenser incorporating an oligodynamically germicidally active substance for maintaining the dispensation of germ-free fluid, particularly eye drops. The delivery passage from a supply container associated with the fluid dispenser of the invention contains an oligodynamically germicidally active substance that is soluble in the fluid to be dispensed. The device does not require air pressure within the container, thus eliminating one avenue for the introduction of germs into the fluid. The device includes a metering pump and inlet and outlet valves. The above-mentioned fluid soluble oligodynamically germicidally active substance is situated in the region of the inlet valve or the inlet thereto and/or the outlet therefrom.
Claims16
A fluid dispenser for germ-free fluid, comprising a through passage connecting an inlet opening for fluid contained in a supply container and a delivery opening for said fluid and having therein an oligodynamically germicidally active substance that is soluble in the fluid, said device comprising a metering pump operating without air pressure compensation and having an inlet valve for closing said inlet opening and having said fluid-soluble oligodynamically germicidally active substance embedded in a carrier material contained in at least one of said inlet valve and its associated inlet and outlet passages;
- an outlet valve for closing said delivery opening, wherein said oligodynamically germicidally active substance is embedded in a carrier material contained in at least one of said outlet valve and its associated inlet and outlet passages;
- said outlet valve including a closure member which contains a carrier material having said oligodynamically germicidally active substance embedded therein;
- and at least one spring means acting on the closure member of the outlet valve, said at least one spring means having said oligodynamically germicidally active substance embedded in a carrier material on at least on a surface thereof.
Dependencies are inferred from the claim text.