Device for storing a liquid medicinal substance and for administering eye drops
First Claim
1. A device for storing a liquid medicinal substance and administering eye drops constituted by this substance, comprising a rigid cylindrical reservoir containing said substance and a distributor being connected to one end of said reservoir while the opposite end of said cylindrical reservoir being closed, said distributor having an applicator nozzle including an orifice designed to form and administer said drops to an eye of a patient, said distributor including a flow rate controlling device comprising at least one membrane with calibrated micropores which seals said reservoir, a sliding piston being engaged within said reservoir and being controlled by said device for dispensing liquid medicinal substance from said device, and said flow rate controlling device being connected to asepticization devices having an oligodynamic action on a predetermined volume of medicinal substance situated upstream from said orifice in which the piston contains a rigid retention stop and a flexible sheath defining an internal cavity, said retention stop comprises a supporting stud, and a total height of said stop with the supporting stud is roughly equal, at rest, to a height of the internal cavity.
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Accused Products
Abstract
The device represented in its storage position contains essentially a body (11) in synthetic material containing a reservoir (10) containing a medicinal substance (29). The body (11) is fitted with an applicator nozzle (15). The reservoir (10) has the shape of a cylindrical glass jacket (17) closed at one end by a movable sealing plug (18) and at the other end by a mobile piston (19). The mobile piston is linked with a plunger (16) which advantageously is a spring in a synthetic material. A flow rate controlling filter (19) is lodged in the applicator nozzle (15). This device is advantageous because the reservoir can be sterilized with its contents. The filter and the piston along with the plunger guarantee the medicinal substance remains in an aseptic state by preventing contamination via the applicator nozzle.
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Citations
9 Claims
- 1. A device for storing a liquid medicinal substance and administering eye drops constituted by this substance, comprising a rigid cylindrical reservoir containing said substance and a distributor being connected to one end of said reservoir while the opposite end of said cylindrical reservoir being closed, said distributor having an applicator nozzle including an orifice designed to form and administer said drops to an eye of a patient, said distributor including a flow rate controlling device comprising at least one membrane with calibrated micropores which seals said reservoir, a sliding piston being engaged within said reservoir and being controlled by said device for dispensing liquid medicinal substance from said device, and said flow rate controlling device being connected to asepticization devices having an oligodynamic action on a predetermined volume of medicinal substance situated upstream from said orifice in which the piston contains a rigid retention stop and a flexible sheath defining an internal cavity, said retention stop comprises a supporting stud, and a total height of said stop with the supporting stud is roughly equal, at rest, to a height of the internal cavity.
Specification