Apparatus for delivering multiple medicaments to an eye without premixing in the apparatus
First Claim
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1. An apparatus for applying medicaments to an eye, comprising:
- a vial;
a means for partitioning said vial into a first medicament chamber and a second medicament chamber which precludes commingling of medicament in the first chamber with medicament in the second chamber; and
a nozzle coupled in fluid communication with the first and second medicament chambers, the nozzle defining a tight interface therein normally in a closed position which prevents passage of medicament through the nozzle and which opens in response to a flow of medicament of sufficient pressure to permit passage of said flow of medicament through the nozzle for release into the eye.
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Abstract
An apparatus for simultaneously delivering more than one kind of medicament to an eye, without premixing of the medicaments within the apparatus. The apparatus includes a special nozzle assembly which precludes reentry of medicament expelled from the nozzle to prevent commingling of the medicaments. In this way, dosages of two or more medicaments may be simultaneously delivered to an eye without the need for creating a stable premixture of the medicaments.
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Citations
19 Claims
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1. An apparatus for applying medicaments to an eye, comprising:
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a vial; a means for partitioning said vial into a first medicament chamber and a second medicament chamber which precludes commingling of medicament in the first chamber with medicament in the second chamber; and a nozzle coupled in fluid communication with the first and second medicament chambers, the nozzle defining a tight interface therein normally in a closed position which prevents passage of medicament through the nozzle and which opens in response to a flow of medicament of sufficient pressure to permit passage of said flow of medicament through the nozzle for release into the eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus for simultaneously delivering a plurality of different medicaments to an eye without commingling of the different medicaments within the apparatus comprising:
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a vial having an outer body which defines an outer nozzle forming section at an anterior end of the apparatus; a means for partitioning the vial into a first medicament chamber and a second medicament chamber, said means for partitioning preventing commingling of medicament in the first chamber with medicament in the second chamber; an inner nozzle forming body which is received within the outer nozzle forming section of the outer body, an outer surface of the inner nozzle forming body making surface to surface contact with an inner surface of the outer nozzle forming section of the outer body to define a normally closed interface terminating at an anterior nozzle tip, the closed interface preventing passage of medicament through the nozzle; means defining a first drop cavity in fluid communication with the first medicament chamber; means defining a second drop cavity in fluid communication with the second medicament chamber; means for preventing commingling of medicament in the first drop cavity with medicament in the second drop cavity; means for forcing a dosage of a first medicament in the first drop cavity to flow into and open the interface and to flow out of the apparatus through the nozzle; and means for forcing a dosage of a second medicament in the second drop cavity to flow into and open the interface and to flow out of the apparatus through the nozzle, whereby the interface immediately closes upon expulsion of said dosages of said first and second medicaments out of the nozzle thereby preventing reentry of medicament into the apparatus. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification